Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
10th Edition
ISBN: 9780133922851
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
Publisher: PEARSON
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Chapter 39, Problem 12TYU
Summary Introduction
To write an essay: To summarize the role of phytochrome in influencing shoot growth to increase light capture by a plant.
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a. What are the two basic components of phytochrome?
b. Explain how phytochrome responds to different wavelengths of light. How does this account for the phenomenon of photoreversibilty?
Using the provided figure, describe the importance of the two phytochrome systems in controlling de-etiolation and green stem elongation under full sun and shade. Include the key mechanisms and temporal changes in control of this process.
Give explain.
Chapter 39 Solutions
Campbell Biology, Books a la Carte Plus Mastering Biology with eText -- Access Card Package (10th Edition)
Ch. 39.1 - What are the morphological differences between...Ch. 39.1 - Cycloheximide is a drug that inhibits protein...Ch. 39.1 - Prob. 3CCCh. 39.2 - Prob. 1CCCh. 39.2 - WHAT IF? If a plant has the double mutation err...Ch. 39.2 - Prob. 3CCCh. 39.3 - If an enzyme in field-grown soybean leaves is most...Ch. 39.3 - WHAT IF? If a plant flowers in a controlled...Ch. 39.3 - MAKE CONNECTIONS Plants detect the quality of...Ch. 39.4 - Prob. 1CC
Ch. 39.4 - Prob. 2CCCh. 39.4 - Prob. 3CCCh. 39.5 - What are some drawbacks of spraying fields with...Ch. 39.5 - Chewing insects mechanically damage plants and...Ch. 39.5 - Many fungal pathogens get food by causing plant...Ch. 39.5 - WHAT IF? Suppose a scientist finds that a...Ch. 39 - What are two common ways by which signal...Ch. 39 - Is there any truth to the old adage, "One bad...Ch. 39 - Why did plant physiologists propose the existence...Ch. 39 - Plants that have acclimated to drought stress are...Ch. 39 - Prob. 39.5CRCh. 39 - Prob. 1TYUCh. 39 - Prob. 2TYUCh. 39 - Prob. 3TYUCh. 39 - How may a plant respond to severe heat stress? (A)...Ch. 39 - Level 2: Application/Analysis 5. The signaling...Ch. 39 - If a long-day plant has a critical night length of...Ch. 39 - Prob. 7TYUCh. 39 - DRAW IT Indicate the response to each condition by...Ch. 39 - Level 3: Synthesis/Evaluation 9. EVOLUTION...Ch. 39 - SCIENTIFIC INQUIRY A plant biologist observed a...Ch. 39 - SCIENCE. TECHNOLOGY, AND SOCIETY Describe how our...Ch. 39 - Prob. 12TYUCh. 39 - Prob. 13TYU
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- Please help asaparrow_forwardBased on the paragraphs please explain what is going on in these two picturesarrow_forward▬▬▬ Label the structures and tissues of the cross section of the monocot leaf. Diagram and label a small portion of the leaf epidermis at 400X total magnification (wi the 40X high dry objective in place) showing the a single stoma and its guard cells und hypotonic (distilled water) and hypertonic (5% salt, NaCl) conditions.arrow_forward
- Phytochrome, plays an important role in flowering in many plants. It can also be used to determine when lettuce seeds germinate (shown in the figure below What is phytochrome likely doing in the lettuce seeds? Activating abscisic acid production Activating inhibitors of germination Inhibiting gibberellin synthesis Turning on germination-related genesarrow_forwardTo explain: The evolutionary changes in the plant reproduction that are adapted by plants to increasingly dry environments.arrow_forwardBelow is a series of pictures of the stem (x.s.) of a corn, Zea mays. 40x (x.s.) 100x (x.s.) Make a sketch of both magnifications (40x and 100x) and upload it here with the following structures labeled: epidermis, sclerenchyma (fibers), ground tissue parenchyma, vascular bundles, phloem, xylem, sieve tube members, companion cells, vessel elements, tracheidsarrow_forward
- Show the sequence of secondary growth by drawing the row of cells from the boxed area below and labeling the vascular cambium cell (V), 5 xylem cells from oldest (X1) to youngest (X5), and 3 phloem cells (P1 to P3). Show what happens after growth continues by drawing and labeling a row with twice as many xylem and phloem cells. How does the vascular cambium’s location change? A pear has a hard texture but juicy. State two cells that give the characteristics? State the function of the transitional epithelium found in the mammalian urinogenital system. (i) Identify type of tissue lines the air sacs of the lungs. (ii) Explain how the tissue named in (i) adapted to its function.arrow_forwardWhich phytochrome is sensing the shading and what are the TWO (2) rapid shade avoiding responses? *arrow_forwardDiscuss about the Phytochrome control of growth pattern ?arrow_forward
- B. LEAF ADAPTATION The main function of the leaf is in the processes of photosynthesis and transpiration. Apart from these functions, leaf is sometimes adapted to perform other functions. Examples of leaf adaptations are for: a) Support, which could be seen by the presence of tendrils b) Catching insects, by having cup-liked shape of hairs sensitive to touch c) Reproduction, by having meristematic cells able to produce new shoots that will go on to become new individual plants d) Food and water storage, especially found in plants living in dry areas where water is scarce (for example succulent plants, having leaf storing food and water) e) Floatation, for plants living on the water surface, their leaves in general will have air openings on tissues (used for floating) usually found on leaf petiole f) Protection, by having leaves completely or partially modified as thorns Instruction: a) 1. Search for ONE plant species with the following leaf adaptations 2. Give their scientific names…arrow_forwarda. Choose four (4) characteristics best describe an Equisetum Wide and flattened achlorophyllous leaves Commonly found in damp and marsh environment Deep root system with rhizomes that produce many terrestrial stems. Photosynthetic stem Heterosporous, whereas microspore produce male and megaspore produce female gametes Strictly reproduce sexually Shoots are two types, fertile and sterilearrow_forwardExplain the conversion cycle of phytochrome.arrow_forward
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