Ch.39 - Plant Sensation and ResponseSee all chapters
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Ch.1 - Introduction to Biology
Ch.2 - Chemistry
Ch.3 - Water
Ch.4 - Carbon
Ch.5 - Biological Molecules
Ch.6 - Cells
Ch.7 - The Membrane
Ch.8 - Energy and Metabolism
Ch.9 - Respiration
Ch.10 - Photosynthesis
Ch.11 - Cell Signaling
Ch.12 - Cell Division
Ch.13 - Meiosis
Ch.14 - Mendelian Genetics
Ch.15 - Chromosomal Theory of Inheritance
Ch.16 - DNA Synthesis
Ch.17 - Gene Expression
Ch.18 - Regulation of Expression
Ch.19 - Viruses
Ch.20 - Biotechnology
Ch.21 - Genomics
Ch.22 - Development
Ch.23 - Evolution by Natural Selection
Ch.24 - Evolution of Populations
Ch.25 - Speciation
Ch.26 - History of Life on Earth
Ch.27 - Phylogeny
Ch.28 - Prokaryotes
Ch.29 - Protists
Ch.30 - Plants
Ch.31 - Fungi
Ch.32 - Overview of Animals
Ch.33 - Invertebrates
Ch.34 - Vertebrates
Ch.35 - Plant Anatomy
Ch.36 - Vascular Plant Transport
Ch.37 - Soil
Ch.38 - Plant Reproduction
Ch.39 - Plant Sensation and Response
Ch.40 - Animal Form and Function
Ch.41 - Digestive System
Ch.42 - Circulatory System
Ch.43 - Immune System
Ch.44 - Osmoregulation and Excretion
Ch.45 - Endocrine System
Ch.46 - Animal Reproduction
Ch.47 - Nervous System
Ch.48 - Sensory Systems
Ch.49 - Muscle Systems
Ch.50 - Ecology
Ch.51 - Animal Behavior
Ch.52 - Population Ecology
Ch.53 - Community Ecology
Ch.54 - Ecosystems
Ch.55 - Conservation Biology

Phototropism

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Sections
Phototropism
Tropisms and Hormones
Plant Defenses
Additional Problems
Upon exposure to blue light, plants not only begin to grow toward the light, but move their chloroplasts to the sunny side of each cell. The adaptive advantage of moving chloroplasts to the sunny side of each cell ________. a. maximizes light absorption by the chloroplasts for photosynthesis b. increases production of phototropic hormones c. maximizes heat absorption by the chloroplasts for cellular respiration d. increases adenosine triphosphate (ATP) production during the light-independent reactions
Which of the colors of visible light induces curvature in coleoptile most effectively? a. red b. blue c. violet d. orange
Phytochrome plays a critical role in seed germination. Which of the colors maximizes the seed germination? a. red b. blue c. violet d. orange
You may have observed plants rotate towards a light source, thereby increasing the plant's ability to intercept light energy and increase photosynthesis. You, however, are given the task of preventing grass seedlings from rotating toward the light. Using your knowledge of phototropism, which of the following experimental procedures would you use to complete your task? a. Cover the growing tip of the grass seedling with black paper. b. Supply the seedlings with very dim light (red light does not induce a bend). c. Cover the portion of the seedling below the tip with a black shield. d. Supply the seedling with nutrient-rich fertilizer solution.
Guanylyl cyclase:A. is linked with angina.B. like adenylyl cyclase, converts NTPs to CNTPs.C. causes a cGMP cascade that activates protein kinase C.D. and adenylyl cyclase can bind extracellular signal molecules.