| define tropism in biology: The Power of Movement in Plants Charles Robert Darwin, 1897 |
| define tropism in biology: Photoperiodism in Plants Brian Thomas, Daphne Vince-Prue, 1996-10-17 Photoperiodism is the response to the length of the day that enables living organisms to adapt to seasonal changes in their environment as well as latitudinal variation. As such, it is one of the most significant andcomplex aspects of the interaction between plants and their environment and is a major factor controlling their growth and development. As the new and powerful technologies of molecular genetics are brought to bear on photoperiodism, it becomes particularly important to place new work in the context of the considerable amount of physiological information which already exists on the subject. This innovative book will be of interest to a wide range of plant scientists, from those interested in fundamental plant physiology and molecular biology to agronomists and crop physiologists. - Provides a self-sufficient account of all the important subjects and key literature references for photoperiodism - Includes research of the last twenty years since the publication of the First Edition - Includes details of molecular genetic techniques brought to bear on photoperiodism |
| define tropism in biology: Biodefense in the Age of Synthetic Biology National Academies of Sciences, Engineering, and Medicine, Division on Earth and Life Studies, Board on Life Sciences, Board on Chemical Sciences and Technology, Committee on Strategies for Identifying and Addressing Potential Biodefense Vulnerabilities Posed by Synthetic Biology, 2019-01-05 Scientific advances over the past several decades have accelerated the ability to engineer existing organisms and to potentially create novel ones not found in nature. Synthetic biology, which collectively refers to concepts, approaches, and tools that enable the modification or creation of biological organisms, is being pursued overwhelmingly for beneficial purposes ranging from reducing the burden of disease to improving agricultural yields to remediating pollution. Although the contributions synthetic biology can make in these and other areas hold great promise, it is also possible to imagine malicious uses that could threaten U.S. citizens and military personnel. Making informed decisions about how to address such concerns requires a realistic assessment of the capabilities that could be misused. Biodefense in the Age of Synthetic Biology explores and envisions potential misuses of synthetic biology. This report develops a framework to guide an assessment of the security concerns related to advances in synthetic biology, assesses the levels of concern warranted for such advances, and identifies options that could help mitigate those concerns. |
| define tropism in biology: The Vascular Cambium Muhammad Iqbal, 1990-09-07 The vascular cambium, a lateral meristem responsible for the radical growth of woody plants, has long been a subject for active research in both temperate and tropical regions. This work provides comprehensive coverage of all aspects of the vascular cambium and represents an up-to-date review of the knowledge accumulated over the last twenty years. Chapters cover origin and development of cambial cells, phenomena of orientation in the cambium, seasonal and environmental influences on cambial activity. There is also a discussion of the evolution of the cambium in geologic time. |
| define tropism in biology: The Science and Applications of Synthetic and Systems Biology Institute of Medicine, Board on Global Health, Forum on Microbial Threats, 2011-12-30 Many potential applications of synthetic and systems biology are relevant to the challenges associated with the detection, surveillance, and responses to emerging and re-emerging infectious diseases. On March 14 and 15, 2011, the Institute of Medicine's (IOM's) Forum on Microbial Threats convened a public workshop in Washington, DC, to explore the current state of the science of synthetic biology, including its dependency on systems biology; discussed the different approaches that scientists are taking to engineer, or reengineer, biological systems; and discussed how the tools and approaches of synthetic and systems biology were being applied to mitigate the risks associated with emerging infectious diseases. The Science and Applications of Synthetic and Systems Biology is organized into sections as a topic-by-topic distillation of the presentations and discussions that took place at the workshop. Its purpose is to present information from relevant experience, to delineate a range of pivotal issues and their respective challenges, and to offer differing perspectives on the topic as discussed and described by the workshop participants. This report also includes a collection of individually authored papers and commentary. |
| define tropism in biology: Plant Tropisms Simon Gilroy, Patrick Masson, 2008-06-02 Tropisms, the defined vectorial stimuli, such as gravity, light, touch, humidity gradients, ions, oxygen, and temperature, which provide guidance for plant organ growth, is a rapidly growing and changing field. The last few years have witnessed a true renaissance in the analysis of tropisms. As such the conception of tropisms has changed from being seen as a group of simple laboratory curiosities to their recognition as important tools/phenotypes with which to decipher basic cell biological processes that are essential to plant growth and development. Plant Tropisms will provide a comprehensive, yet integrated volume of the current state of knowledge on the molecular and cell biological processes that govern plant tropisms. |
| define tropism in biology: Abscisic Acid in Plants , 2019-11-21 Abscisic Acid in Plants, Volume 92, the latest release in the Advances in Botanical Research series, is a compilation of the current state-of-the-art on the topic. Chapters in this new release comprehensively describe latest knowledge on how ABA functions as a plant hormone. They cover topics related to molecular mechanisms as well as the biochemical and chemical aspects of ABA action: hormone biosynthesis, catabolism, transport, perception, signaling in plants, seeds and in response to biotic and abiotic stresses, hormone evolution and chemical biology, and much more. - Presents the latest release in the Advances in Botanical Research series - Provides an Ideal resource for post-graduates and researchers in the plant sciences, including plant physiology, plant genetics, plant biochemistry, plant pathology, and plant evolution - Contains contributions from internationally recognized authorities in their respective fields |
| define tropism in biology: Mineral Nutrition of Higher Plants Horst Marschner, 1995 This text presents the principles of mineral nutrition in the light of current advances. For this second edition more emphasis has been placed on root water relations and functions of micronutrients as well as external and internal factors on root growth and the root-soil interface. |
| define tropism in biology: Physiology of Movements Wolfgang Haupt, M. E. Feinleib, 1979 General aspects of plant movement; Introduction; Stimulus perception; Reception and trasduction of electrical and mechanical stimuli; Endogenous rhythms in the movement of plants; Intracellular movements; Role of microtubules in intracellular movements; Actomyosin as a basic mechanism of movement in animals and plants; Cytoplasmic streaming in physarum; Cytoplasmic streaming and cyclosis of chloroplasts; Chloroplast and nuclear migration; Locomotion in microbial plants; Mechanisms of locomotion; Bacterial flagella; Plant cilia; Gliding movements; Control of locomoltion; Photomovement; Chemotaxis in bacteria; Chemotaxis in unicellular eukaryotes; Movement of slime molds; Movements using turgor mechanisms; Movements of stomata; Leaf movements and tendril curling; Growth movements; Growth movements directed by light; Induction of polarity; Phototropism; Growth movements directed by gravity; Gravitropism in single cells; Graviperception in multicellular organs; Growth-control mechanisms in gravitropism; Growth movements not directed primarily by external stimuli; Circumnutation; Epinasty; Author index; Subject index. |
| define tropism in biology: The Algorithmic Beauty of Plants Przemyslaw Prusinkiewicz, Aristid Lindenmayer, 2012-12-06 Now available in an affordable softcover edition, this classic in Springer's acclaimed Virtual Laboratory series is the first comprehensive account of the computer simulation of plant development. 150 illustrations, one third of them in colour, vividly demonstrate the spectacular results of the algorithms used to model plant shapes and developmental processes. The latest in computer-generated images allow us to look at plants growing, self-replicating, responding to external factors and even mutating, without becoming entangled in the underlying mathematical formulae involved. The authors place particular emphasis on Lindenmayer systems - a notion conceived by one of the authors, Aristid Lindenmayer, and internationally recognised for its exceptional elegance in modelling biological phenomena. Nonetheless, the two authors take great care to present a survey of alternative methods for plant modelling. |
| define tropism in biology: Learning from SARS Institute of Medicine, Board on Global Health, Forum on Microbial Threats, 2004-04-26 The emergence of severe acute respiratory syndrome (SARS) in late 2002 and 2003 challenged the global public health community to confront a novel epidemic that spread rapidly from its origins in southern China until it had reached more than 25 other countries within a matter of months. In addition to the number of patients infected with the SARS virus, the disease had profound economic and political repercussions in many of the affected regions. Recent reports of isolated new SARS cases and a fear that the disease could reemerge and spread have put public health officials on high alert for any indications of possible new outbreaks. This report examines the response to SARS by public health systems in individual countries, the biology of the SARS coronavirus and related coronaviruses in animals, the economic and political fallout of the SARS epidemic, quarantine law and other public health measures that apply to combating infectious diseases, and the role of international organizations and scientific cooperation in halting the spread of SARS. The report provides an illuminating survey of findings from the epidemic, along with an assessment of what might be needed in order to contain any future outbreaks of SARS or other emerging infections. |
| define tropism in biology: The Facts on File Dictionary of Botany Jill Bailey, 2014-05-14 A dictionary containing over 2,000 terms and concepts related to botany. |
| define tropism in biology: Plant Growth and Development Lalit M. Srivastava, 2002-08-27 This book provides current information on synthesis of plant hormones, how their concentrations are regulated, and how they modulate various plant processes. It details how plants sense and tolerate such factors as drought, salinity, and cold temperature, factors that limit plant productivity on earth. It also explains how plants sense two other environmental signals, light and gravity, and modify their developmental patterns in response to those signals. This book takes the reader from basic concepts to the most up-to-date thinking on these topics. * Provides clear synthesis and review of hormonal and environmental regulation of plant growth and development * Contains more than 600 illustrations supplementary information on techniques and/or related topics of interest * Single-authored text provides uniformity of presentation and integration of the subject matter * References listed alphabetically in each section |
| define tropism in biology: Gravitational Biology I Markus Braun, Maik Böhmer, Donat-Peter Häder, Ruth Hemmersbach, Klaus Palme, 2018-07-20 This book summarizes what is currently known about gravity sensing and response mechanisms in microorganisms, fungi, lower and higher plants; starting from the historical eye-opening experiments from the 19th century up to today’s extremely rapid advancing cellular, molecular and biotechnological research. All forms of life are constantly exposed to gravity and it can be assumed that almost all organisms have developed sensors and respond in one way or the other to the unidirectional acceleration force,this books shows us some of these different ways. The book is written for plant biologists and microbiologists as well as scientists interested in space and gravitational biology. |
| define tropism in biology: The Secret Life of Plants Peter Tompkins, Christopher Bird, 2018-06-12 Once in a while you find a book that stuns you. Its scope leaves you breathless. This is such a book. — John White, San Francisco Chronicle Explore the inner world of plants and its fascinating relation to mankind, as uncovered by the latest discoveries of science. In this truly revolutionary and beloved work, drawn from remarkable research, Peter Tompkins and Christopher Bird cast light on the rich psychic universe of plants. The Secret Life of Plants explores plants' response to human care and nurturing, their ability to communicate with man, plants' surprising reaction to music, their lie-detection abilities, their creative powers, and much more. Tompkins and Bird's classic book affirms the depth of humanity's relationship with nature and adds special urgency to the cause of protecting the environment that nourishes us. |
| define tropism in biology: Pandemic Outbreaks in the 21st Century Viswanath Buddolla, 2021-08-24 In the past two decades, several pandemics have ravaged the globe, giving us several lessons on infectious disease epidemiology, the importance of initial detection and characterization of outbreak viruses, the importance of viral epidemic prevention steps, and the importance of modern vaccines. Pandemic Outbreaks in the Twenty-First Century: Epidemiology, Pathogenesis, Prevention, and Treatment summarizes the improvements in the 21st century to overcome / prevent / treat global pandemic with future prospective. Divided into 9 chapters, the book begins with an in-depth introduction to the lessons learned from the first pandemic of the 21st century. It describes the history, present and future in terms of detection, prevention and treatment. Followed by chapters on the outbreak, treatment strategies and clinical management of several infectious diseases like MERS, SARD and COVID 19, Pandemic Outbreaks in the Twenty-First Century: Epidemiology, Pathogenesis, Prevention, and Treatment, presents chapters on immunotherapies and vaccine technologies to combat pandemic outbreak and challenges. The book finishes with a chapter on the current knowledge and technology to control pandemic outbreaks. All are presented in a practical short format, making this volume a valuable resource for very broad academic audience. Provides insight to the lessons learned from past pandemics Gives recommendations, future direction in terms of detection, prevention and treatment of pandemics Guides readers through the status and recent developments of vaccines to overcome or prevent pandemics Shows how to enhance the host innate immunity in infectious diseases Includes a chapter on immunotherapies to combat pandemic outbreaks |
| define tropism in biology: Photomovement D.-P. Häder, M. Lebert, 2001-06-19 This volume emphasizes the involvement of all facets of biology in the analysis of environmentally controlled movement responses. This includes biophysics, biochemistry, molecular biology and as an integral part of any approach to a closer understanding, physiology. The initial euphoria about molecular biology as the final solution for any problem has dwindled and the field agrees now that only the combined efforts of all facets of biology will at some day answer the question posed more than hundred years ago: How can plants see?. One conclusion can be drawn from the current knowledge as summarized in this volume. The answer will most likely not be the same for all systems. |
| define tropism in biology: Water Stress in Plants Ismail M. M. Rahman, Zinnat Ara Begum, Hiroshi Hasegawa, 2016-08-24 Water stress in plants is caused by the water deficit, as induced possibly by drought or high soil salinity. The prime consequence of water stress in plants is the disruption in the agricultural production, resulting in food shortage. The plants, however, try to adapt to the stress conditions using biochemical and physiological interventions. The edited compilation is an attempt to provide new insights into the mechanism and adaptation aspects of water stress in plants through a thoughtful mixture of viewpoints. We hope that the content of the book will be useful for the researchers working with the plant diversity-related environmental aspects and also provide suggestions for the strategists. |
| define tropism in biology: Polarity in Plants K. Lindsey, 2004 The establishment of polarity is a fundamental feature in eukaryotic development. Polarity in Plants provides an account of current research into the mechanisms by which polarity is generated at the level of the cell, organ and organism in plants, drawing especially on recent work with model organisms. The emphasis is on the use of the techniques of molecular genetics to dissect molecular mechanisms. This is the first volume to bring together the diverse aspects of polarity in plant development. |
| define tropism in biology: Science for Tenth Class Part 2 Biology Lakhmir Singh & Manjit Kaur, A series of books for Classes IX and X according to the CBSE syllabus and CCE Pattern |
| define tropism in biology: Science For Tenth Class Part 3 Biology Lakhmir Singh & Manjit Kaur, A series of six books for Classes IX and X according to the CBSE syllabus. Each class divided into 3 parts. Part 1 - Physics Part 2 - Chemistry Part 3 - Biology |
| define tropism in biology: Environmental Responses Andrew Blowers, Steve Hinchliffe, 2003-09-11 Climate change, urban congestion, nuclear waste, deforestation, destruction of wildlife - how can we respond to these and the many other environmental problems that the world faces today? Can we trust the experts? Does technology have the answers? Should we look to governments or to markets to solve the problems? Are political solutions possible? Should we be optimistic or pessimistic about the environmental futures? To address these questions we need to look at environmental responses in an integrated way. This includes understanding the responses of environments to change, and the responses to those changes made by societies. Environmental Responses takes an innovative interdisciplinary approach to understanding the risks and uncertainties that inform our responses to environments. Featuring places such as Lake Baikal, Andalusia, Cumbria and Bhutan the book is richly illustrated drawing on examples from across the world. Among the issues covered are: * how we might deal with environmental risk in conditions of scientific and political uncertainty * the need to understand the technical, economic and political responses to environmental change * finding new ways of involving citizens in decisions affecting environmental futures * the prospects for achieving sustainable forms of development Environmental Responses is the final book in a series entitled Environment: Change, Contest and Response that forms a large part of an Open University interdisciplinary course on environmental matters. The other books in the series are:Understanding Environmental Issues Changing Environments Contested Environments |
| define tropism in biology: Photomorphogenesis in Plants Richard E. Kendrick, G. H. M. Kronenberg, 1994 David Dickinson is a household name, the king of the catchphrase, undisputed darling of daytime TV and a rising star. He's a respected antiques expert and exudes a taste for the finer things in life. But the road to his success has not been as smooth as his patter and he's learnt a lot at the school of hard knocks. |
| define tropism in biology: Achiever's Biology , |
| define tropism in biology: CK-12 Biology CK-12 Foundation, 2010-10-21 CK-12 Foundation's Biology FlexBook covers the following chapters: What is Biology investigations, methods, observations. The Chemistry of Life biochemical, chemical properties. Cellular Structure & Function DNA, RNA, protein, transport, homeostasis. Photosynthesis & Cellular Respiration energy, glucose, ATP, light, Calvin cycle, glycolysis, Kreps cycle. The Cell Cycle, Mitosis & Meiosis cell division, sexual, asexual reproduction. Gregor Mendel & Genetics inheritance, probability, dominant, recessive, sex-linked traits. Molecular Genetics: From DNA to Proteins mutation, gene expression. Human Genetics & Biotechnology human genome, genetic disorders, sex-linked inheritance, cloning. Life: From the First Organism Onward evolution, extinctions, speciation, classification. The Theory of Evolution Darwin, ancestry, selection, comparative anatomy, biogeography. The Principles of Ecology energy, ecosystems, water, carbon, nitrogen cycles. Communities & Populations biotic ecosystems, biodiversity, resources, climate. Microorganisms: Prokaryotes & Viruses prokaryotes, viruses, bacteria. Eukaryotes: Protists & Fungi animal-, plant-, fungus-like protists, fungi. Plant Evolution & Classification plant kingdom, nonvascular, vascular, seed, flowering plants. Plant Biology tissues, roots, stems, leaves, growth. Introduction to Animals invertebrates, classification, evolution. From Sponges to Invertebrate Chordates sponges, cnidarians, flatworms, roundworms. From Fish to Birds characteristics, classification, evolution. Mammals & Animal Behavior traits, reproduction, evolution, classification, behavior. Introduction to the Human Body: Bones, Muscles & Skin skeletal, muscular, integumentary systems. The Nervous & Endocrine Systems structures, functions. The Circulatory, Respiratory, Digestive & Excretory Systems structures, functions, Food Pyramid. The Immune System & Disease responses, defenses. Reproduction & Human Development male, female, lifecycle. Biology Glossary. |
| define tropism in biology: Hormone Metabolism and Signaling in Plants Jiayang Li, Chuanyou Li, Steven M Smith, 2017-04-19 Plant Hormones: Biosynthesis and Mechanisms of Action is based on research funded by the Chinese government's National Natural Science Foundation of China (NSFC). This book brings a fresh understanding of hormone biology, particularly molecular mechanisms driving plant hormone actions. With growing understanding of hormone biology comes new outlooks on how mankind values and utilizes the built-in potential of plants for improvement of crops in an environmentally friendly and sustainable manner. This book is a comprehensive description of all major plant hormones: how they are synthesized and catabolized; how they are perceived by plant cells; how they trigger signal transduction; how they regulate gene expression; how they regulate plant growth, development and defense responses; and how we measure plant hormones. This is an exciting time for researchers interested in plant hormones. Plants rely on a diverse set of small molecule hormones to regulate every aspect of their biological processes including development, growth, and adaptation. Since the discovery of the first plant hormone auxin, hormones have always been the frontiers of plant biology. Although the physiological functions of most plant hormones have been studied for decades, the last 15 to 20 years have seen a dramatic progress in our understanding of the molecular mechanisms of hormone actions. The publication of the whole genome sequences of the model systems of Arabidopsis and rice, together with the advent of multidisciplinary approaches has opened the door to successful experimentation on plant hormone actions. - Offers a comprehensive description of all major plant hormones including the recently discovered strigolactones and several peptide hormones - Contains a chapter describing how plant hormones regulate stem cells - Offers a fresh understanding of hormone biology, particularly molecular mechanisms driving plant hormone actions - Discusses the built-in potential of plants for improvement of crops in an environmentally friendly and sustainable manner |
| define tropism in biology: Vascular Transport in Plants N. Michelle Holbrook, Maciej A. Zwieniecki, 2011-09-06 Vascular Transport in Plants provides an up-to-date synthesis of new research on the biology of long distance transport processes in plants. It is a valuable resource and reference for researchers and graduate level students in physiology, molecular biology, physiology, ecology, ecological physiology, development, and all applied disciplines related to agriculture, horticulture, forestry and biotechnology. The book considers long-distance transport from the perspective of molecular level processes to whole plant function, allowing readers to integrate information relating to vascular transport across multiple scales. The book is unique in presenting xylem and phloem transport processes in plants together in a comparative style that emphasizes the important interactions between these two parallel transport systems. - Includes 105 exceptional figures - Discusses xylem and phloem transport in a single volume, highlighting their interactions - Syntheses of structure, function and biology of vascular transport by leading authorities - Poses unsolved questions and stimulates future research - Provides a new conceptual framework for vascular function in plants |
| define tropism in biology: The Physiology of Plants Wilhelm Pfeffer, 1900 |
| define tropism in biology: The Feminism of Uncertainty Ann Snitow, 2015-08-27 The Feminism of Uncertainty brings together Ann Snitow’s passionate, provocative dispatches from forty years on the front lines of feminist activism and thought. In such celebrated pieces as A Gender Diary—which confronts feminism’s need to embrace, while dismantling, the category of woman—Snitow is a virtuoso of paradox. Freely mixing genres in vibrant prose, she considers Angela Carter, Doris Lessing, and Dorothy Dinnerstein and offers self-reflexive accounts of her own organizing, writing, and teaching. Her pieces on international activism, sexuality, motherhood, and the waywardness of political memory all engage feminism’s impossible contradictions—and its utopian hopes. |
| define tropism in biology: Botany Illustrated Janice Glimn-Lacy, Peter B. Kaufman, 2012-12-06 This is a discovery book about plants. It is for students In the first section, introduction to plants, there are sev of botany and botanical illustration and everyone inter eral sources for various types of drawings. Hypotheti ested in plants. Here is an opportunity to browse and cal diagrams show cells, organelles, chromosomes, the choose subjects of personal inter. est, to see and learn plant body indicating tissue systems and experiments about plants as they are described. By adding color to with plants, and flower placentation and reproductive the drawings, plant structures become more apparent structures. For example, there is no average or stan and show how they function in life. The color code dard-looking flower; so to clearly show the parts of a clues tell how to color for definition and an illusion of flower (see 27), a diagram shows a stretched out and depth. For more information, the text explains the illus exaggerated version of a pink (Dianthus) flower (see trations. The size of the drawings in relation to the true 87). A basswood (Tifia) flower is the basis for diagrams size of the structures is indicated by X 1 (the same size) of flower types and ovary positions (see 28). Another to X 3000 (enlargement from true size) and X n/n source for drawings is the use of prepared microscope (reduction from true size). slides of actual plant tissues. |
| define tropism in biology: Tropisms Nathalie Sarraute, 2015-11-09 Nathalie Sarraute's stunning debut—vignettes of inner movements—foreshadowed the rise of the nouveau roman. Hailed as a masterpiece by Jean Genet, Marguerite Duras, and Jean-Paul Sartre, Tropisms is considered one of the defining texts of the nouveau roman movement. Nathalie Sarraute has defined her work as the “movements that are hidden under the commonplace, harmless instances of our everyday lives.” Like figures in a grainy photograph, Sarraute’s characters are blurred and shadowy, while her narrative never develops beyond a stressed moment. Instead, Sarraute brilliantly finds and elaborates subtle details—when a relationship changes, when we fall slightly deeper into love, or when something innocent tilts to the smallest degree toward suspicion. |
| define tropism in biology: Dictionary of Microbiology & Molecular Biology Paul Singleton, Diana Sainsbury, 2007-11-12 This Third, Revised Edition of a unique, encyclopaedic reference work covers the whole field of pure and applied microbiology and microbial molecular biology, from A to Zythia. |
| define tropism in biology: Potential Risks and Benefits of Gain-of-Function Research National Research Council, Institute of Medicine, Board on Health Sciences Policy, Policy and Global Affairs, Committee on Science, Technology, and Law, Division on Earth and Life Studies, Board on Life Sciences, 2015-04-13 On October 17, 2014, spurred by incidents at U.S. government laboratories that raised serious biosafety concerns, the United States government launched a one-year deliberative process to address the continuing controversy surrounding so-called gain-of-function (GOF) research on respiratory pathogens with pandemic potential. The gain of function controversy began in late 2011 with the question of whether to publish the results of two experiments involving H5N1 avian influenza and continued to focus on certain research with highly pathogenic avian influenza over the next three years. The heart of the U.S. process is an evaluation of the potential risks and benefits of certain types of GOF experiments with influenza, SARS, and MERS viruses that would inform the development and adoption of a new U.S. Government policy governing the funding and conduct of GOF research. Potential Risks and Benefits of Gain-of-Function Research is the summary of a two-day public symposia on GOF research. Convened in December 2014 by the Institute of Medicine and the National Research Council, the main focus of this event was to discuss principles important for, and key considerations in, the design of risk and benefit assessments of GOF research. Participants examined the underlying scientific and technical questions that are the source of current discussion and debate over GOF research involving pathogens with pandemic potential. This report is a record of the presentations and discussion of the meeting. |
| define tropism in biology: The Restless Plant Dov Koller, 2011-01-15 Plants, so predictable, stay where they are. And yet, like all living things, they also move: they grow, adapt, shed leaves and bark, spread roots and branches, snare pollinators, and reward cultivators. This book, the first to thoroughly explore the subject since Darwin’s 1881 treatise on movements in plants, is a comprehensive, up-to-date account of the mechanisms and the adaptive values that move plants. Drawing on examples across the spectrum of plant families—including mosses, ferns, conifers, and flowering plants—the author opens a window on how plants move: within cells, as individual cells, and via organs. Opening with an explanation of how cellular motors work and how cells manage to move organs, Dov Koller considers the movement of roots, tubers, rhizomes, and other plant parts underground, as well as the more familiar stems, leaves, and flowers. Throughout, Koller presents information at the subcellular and cellular levels, including the roles of receptors, signaling pathways, hormones, and physiological responses in motor function. He also discusses the adaptive significance of movements. His book exposes the workings of a world little understood and often overlooked, the world of restless plants and the movements by which they accomplish the necessary functions of their lives. |
| define tropism in biology: Preparing for the Biology AP Exam Neil A. Campbell, Jane B. Reece, Fred W. Holtzclaw, Theresa Knapp Holtzclaw, 2009-11-03 Fred and Theresa Holtzclaw bring over 40 years of AP Biology teaching experience to this student manual. Drawing on their rich experience as readers and faculty consultants to the College Board and their participation on the AP Test Development Committee, the Holtzclaws have designed their resource to help your students prepare for the AP Exam. Completely revised to match the new 8th edition of Biology by Campbell and Reece. New Must Know sections in each chapter focus student attention on major concepts. Study tips, information organization ideas and misconception warnings are interwoven throughout. New section reviewing the 12 required AP labs. Sample practice exams. The secret to success on the AP Biology exam is to understand what you must know and these experienced AP teachers will guide your students toward top scores! |
| define tropism in biology: NSSC Biology Module 3 Ngepathimo Kadhila, 2005-10-01 NSSC Biology is a course consisting of three Modules, an Answer Book and a Teacher's Guide. The course has been written and designed to prepare students for the Namibia Senior Secondary Certificate (NSSC) Ordinary and Higher Level, or similar examinations. The modules have been developed for distance learners and learners attending schools. NSSC Biology is high-quality support material. Features of the books include: ' modules divided into units, each focusing on a different theme ' stimulating and thought-provoking activities, designed to encourage critical thinking ' word boxes providing language support ' highlighted and explained key terminology ' step-by-step guidelines aimed towards achieving the learning outcomes ' self-evaluation to facilitate learning and assess skills and knowledge ' clear distinction between Ordinary and Higher Level content ' an outcomes-based approach encouraging student-centred learning ' detailed feedback in the Answer Book promoting a thorough understanding of content through recognising errors and correcting them. |
| define tropism in biology: A Dictionary of Ecology Michael Allaby, 2010-07-08 The World's Most Trusted Reference Books. |
| define tropism in biology: Light Sensing in Plants M. Wada, K. Shimazaki, M. Iino, 2005-04-01 Plants utilize light not only for photosynthesis but also as environmental signals. They are capable of perceiving wavelength, intensity, direction, duration, and other attributes of light to perform appropriate physiological and developmental changes. This volume presents overviews of and the latest findings in many of the interconnected aspects of plant photomorphogenesis, including photoreceptors (phytochromes, cryptochromes, and phototropins), signal transduction, photoperiodism, and circadian rhythms, in 42 chapters. Also included, is a prologue by Prof. Masaki Furuya that gives an overview of the historical background. With contributions from preeminent researchers in specific subjects from around the world, this book will be a valuable source for a range of scientists from undergraduate to professional levels. |
| define tropism in biology: Structure and Physics of Viruses Mauricio G. Mateu, 2013-06-04 This book contemplates the structure, dynamics and physics of virus particles: From the moment they come into existence by self-assembly from viral components produced in the infected cell, through their extracellular stage, until they recognise and infect a new host cell and cease to exist by losing their physical integrity to start a new infectious cycle. (Bio)physical techniques used to study the structure of virus particles and components, and some applications of structure-based studies of viruses are also contemplated. This book is aimed first at M.Sc. students, Ph.D. students and postdoctoral researchers with a university degree in biology, chemistry, physics or related scientific disciplines who share an interest or are actually working on viruses. We have aimed also at providing an updated account of many important concepts, techniques, studies and applications in structural and physical virology for established scientists working on viruses, irrespective of their physical, chemical or biological background and their field of expertise. We have not attempted to provide a collection of for-experts-only reviews focused mainly on the latest research in specific topics; we have not generally assumed that the reader knows all of the jargon and all but the most recent and advanced results in each topic dealt with in this book. In short, we have attempted to write a book basic enough to be useful to M.Sc and Ph.D. students, as well as advanced and current enough to be useful to senior scientists with an interest in Structural and/or Physical Virology. |
| define tropism in biology: Globalization, Biosecurity, and the Future of the Life Sciences National Research Council, Institute of Medicine, Board on Global Health, Policy and Global Affairs, Development, Security, and Cooperation, Committee on Advances in Technology and the Prevention of Their Application to Next Generation Biowarfare Threats, 2006-06-07 Biomedical advances have made it possible to identify and manipulate features of living organisms in useful ways-leading to improvements in public health, agriculture, and other areas. The globalization of scientific and technical expertise also means that many scientists and other individuals around the world are generating breakthroughs in the life sciences and related technologies. The risks posed by bioterrorism and the proliferation of biological weapons capabilities have increased concern about how the rapid advances in genetic engineering and biotechnology could enable the production of biological weapons with unique and unpredictable characteristics. Globalization, Biosecurity, and the Future of Life Sciences examines current trends and future objectives of research in public health, life sciences, and biomedical science that contain applications relevant to developments in biological weapons 5 to 10 years into the future and ways to anticipate, identify, and mitigate these dangers. |
DEFINE Definition & Meaning - Merriam-Webster
The meaning of DEFINE is to determine or identify the essential qualities or meaning of. How to use define in a sentence.
DEFINE Definition & Meaning | Dictionary.com
Define definition: to state or set forth the meaning of (a word, phrase, etc.).. See examples of DEFINE used in a sentence.
DEFINE | English meaning - Cambridge Dictionary
DEFINE definition: 1. to say what the meaning of something, especially a word, is: 2. to explain and describe the…. Learn more.
DEFINE definition and meaning | Collins English Dictionary
If you define something, you show, describe, or state clearly what it is and what its limits are, or what it is like. We were unable to define what exactly was wrong with him. [ VERB wh ]
Define - definition of define by The Free Dictionary
define - show the form or outline of; "The tree was clearly defined by the light"; "The camera could define the smallest object"
DEFINE - Definition & Meaning - Reverso English Dictionary
Define definition: state the meaning of a word or phrase. Check meanings, examples, usage tips, pronunciation, domains, related words.
define - Wiktionary, the free dictionary
May 13, 2025 · define (third-person singular simple present defines, present participle defining, simple past and past participle defined) To determine with precision; to mark out with …
Define: Definition, Meaning, and Examples - usdictionary.com
Dec 24, 2024 · The word "define" means to explain or clarify the meaning of something or to establish boundaries and parameters. It is a versatile word used in many contexts, from …
Define Definition & Meaning - YourDictionary
Define Sentence Examples The child's eagerness and interest carry her over many obstacles that would be our undoing if we stopped to define and explain everything. It will not be welfare (or, …
DEFINITION Definition & Meaning - Merriam-Webster
The meaning of DEFINITION is a statement of the meaning of a word or word group or a sign or symbol. How to use definition in a sentence.
DEFINE Definition & Meaning - Merriam-Webster
The meaning of DEFINE is to determine or identify the essential qualities or meaning of. How to use define in a sentence.
DEFINE Definition & Meaning | Dictionary.com
Define definition: to state or set forth the meaning of (a word, phrase, etc.).. See examples of DEFINE used in a sentence.
DEFINE | English meaning - Cambridge Dictionary
DEFINE definition: 1. to say what the meaning of something, especially a word, is: 2. to explain and describe the…. Learn more.
DEFINE definition and meaning | Collins English Dictionary
If you define something, you show, describe, or state clearly what it is and what its limits are, or what it is like. We were unable to define what exactly was wrong with him. [ VERB wh ]
Define - definition of define by The Free Dictionary
define - show the form or outline of; "The tree was clearly defined by the light"; "The camera could define the smallest object"
DEFINE - Definition & Meaning - Reverso English Dictionary
Define definition: state the meaning of a word or phrase. Check meanings, examples, usage tips, pronunciation, domains, related words.
define - Wiktionary, the free dictionary
May 13, 2025 · define (third-person singular simple present defines, present participle defining, simple past and past participle defined) To determine with precision; to mark out with …
Define: Definition, Meaning, and Examples - usdictionary.com
Dec 24, 2024 · The word "define" means to explain or clarify the meaning of something or to establish boundaries and parameters. It is a versatile word used in many contexts, from …
Define Definition & Meaning - YourDictionary
Define Sentence Examples The child's eagerness and interest carry her over many obstacles that would be our undoing if we stopped to define and explain everything. It will not be welfare (or, …
DEFINITION Definition & Meaning - Merriam-Webster
The meaning of DEFINITION is a statement of the meaning of a word or word group or a sign or symbol. How to use definition in a sentence.
