Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 39, Problem 9TYK
Summary Introduction
Introduction: Phytochrome is a blue-green pigment or a photoreceptor present in plants. These pigments regulate several light-dependent developmental processes in plants, such as the germination of seeds, the timing of flowering, and elongation of seedlings. Phytochrome is expressed in most of the plant tissues.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Which of the following descriptions about C4 and CAM plants is not correct?
Select one:
a. CAM plants use CO2 released from organic compounds during the day
b. C4 and CAM plants both close stomata during the day in hot and dry climates.
c. in C4 plants, PEP carboxylase present in bundle-sheath cells incorporate CO2 into C4 compounds
d. CAM plants fix CO2 at night
e. C4 plants use PEP carboxylase to fix CO2 even when CO2 concentrations are low
In the Philippines, owners and managers of plant nurseries have to plan lighting schedules for a long-day plant (LDP) with a critical night length of 10 hours that will flower in December. What lighting periods and color of light enrichment will be most effective for flowering of the said LDP?
A. Light periods of 15 hours with light enriched in the red range of the spectrum
B. Dark periods of 11 hours with light enriched in the red range of the spectrum
C. Light periods of 14 hours with light enriched in the far-red range of the spectrum
D. Dark periods of 9 hours with light enriched in the far-red range of the spectrum
E. Light periods of 13 hours with light enriched in the red range of the spectrum
F. Dark periods of 10 hours with light enriched in the far-red range of the spectrum
W
hen a culture of Chlamydomonas is exposed to HIGH intensity light, the cells will display negative phototaxis and move away from the light.
Which of the following could act as a cellular signal triggering movement away from the light?
A.
Low levels of P700+ relative to P700 in the chloroplast.
B.
High levels of G3P in the cytosol.
C.
High levels of NAD+ relative to NADH in mitochondria.
D.
Low levels of ATP relative to ADP in the cytosol.
Chapter 39 Solutions
Study Guide for Campbell Biology
Ch. 39 - Prob. 1IQCh. 39 - What are the important steps in the transduction...Ch. 39 - What is the plans growth response? What types of...Ch. 39 - Explain how phytochrome can also indicate the...Ch. 39 - What are free-running periods?Ch. 39 - Indicate whether a short-day plant and a long-day...Ch. 39 - Prob. 7IQCh. 39 - Prob. 8IQCh. 39 - Prob. 9IQCh. 39 - Prob. 1SYK
Ch. 39 - Develop a concept map to illustrate your...Ch. 39 - Prob. 3SYKCh. 39 - Prob. 1TYKTCh. 39 - Prob. 2TYKTCh. 39 - Prob. 3TYKTCh. 39 - Prob. 4TYKTCh. 39 - Prob. 5TYKTCh. 39 - Prob. 6TYKTCh. 39 - Prob. 7TYKTCh. 39 - The body form within a species of plant may vary...Ch. 39 - Prob. 2TYKCh. 39 - Small molecules in the cell that amplify signals...Ch. 39 - According to the acid growth hypothesis, a. auxin...Ch. 39 - Which of the following situations would most...Ch. 39 - Prob. 6TYKCh. 39 - Prob. 7TYKCh. 39 - Prob. 8TYKCh. 39 - Prob. 9TYKCh. 39 - Prob. 10TYKCh. 39 - Prob. 11TYKCh. 39 - Prob. 12TYKCh. 39 - Prob. 13TYKCh. 39 - Prob. 14TYKCh. 39 - Prob. 15TYKCh. 39 - Which of the following is not a plant defense...Ch. 39 - Prob. 17TYK
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Some plants are recognized by fungal pathogens on the basis of their stomatal pores. Which of the following would provide these plants immunity from fungal infection? a. Removing all of the stomata from the plant b. Changing the spacing of stomatal pores in these plants c. Reinforcing the cell wall in the guard cells of stomatal pores d. Increasing the number of trichomes on the surfacesarrow_forwardWhat is the biological function of SOS in plants? Select one: a. it is a calcium antiporter b. it is a sodium transporter c. it alleviates stress by seeking help during drought d. it improves calcium nutrition in plants e. it promotes salt sensitivityarrow_forwardFind the wrongly match pair. a.ABA - Inhibit plant metabolism b.Cytokinin — Help to retain chlorophyll c.Gibberellin - Bolting effect d.Ethylene — Increases malt yieldarrow_forward
- Which of the following is the function of cytokinin? A. activation of defense response from biotrophic and hemi-biotrophic pathogens B. structurally related to animal steroid hormones for growth and development C. long distance (root-to-shoot) signals for nitrogen assimilation D. defense from necrotrophic pathogens and herbivore insectsarrow_forwardSelect the correct statement regarding plant transformation methods. a. All statements regarding plant transformation are correct b. Electroporation involves shocking plant cells with heat so pores open in the plasma membrane to allow DNA to go into the cell c. Agrobacterium-mediated transformation involves bacteria inserting a segment of DNA into a plant's nucleus d. The gene gun propels bacteria into plant cells that then insert DNA into the plant's nucleusarrow_forwardWhich of the following is the role of iron in plants? A. endosperm development and dehydrogenase activity B. photodestruction of chlorophyll and chloroplast structure C. energy transferring process for photosynthesis and respiration D. regulatory component of proteins and metabolites in roots and leavesarrow_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 Which scenario(s) above produce large amounts of the active form of phytochrome? A B A & C B & Darrow_forwardThe C3 pathway can occur in which of the following plants? A. cypresss B.cactus C.banana D.applesarrow_forward18.It stimulates biochemical activities that cause observable physiological responses by organisms. a.Auxin b.Hormone c.Insulin d.Gibberelin 19.Which natural methods of asexual reproduction is exhibited by ginger, fern, iris and sugarcane? a.Bulb b.Runner c.Corm d.Rhizome 24.Unlike animal hormones, plant hormones do NOT have definite target areas. a.True b.False Plant senescence is the process of aging in plants. Which plant hormone delays senescence? a. Cytokinin b. Gibberelin c. Jasmonic acid d. Brassinosteroid The following are functions of the stomata except ____________. a. close or open pores to keep the moisture content developed b. open and close the pores in the leaves for an exchange of gases c. allow the plant to take in carbon dioxide and give out oxygen for photosynthesis d. convey water and dissolved minerals from the roots to the rest of the plantarrow_forward
- What did Went's experiments with the gelatin block demonstrate? A. Plants cannot be induced to bend during growth unless they are exposed to an indirect source of light. B. Light induces the coleoptile to produce a diffusible substance that moves to the growing region of a plant where it stimulates cells to elongate. C. Gelatin can enhance the movement of a soluble factor from the growing region of a plant to the coleoptile where it accelerates growth. D. When a plant tip is removed from a growing plant, the plant acquires the ability to bend toward the lightarrow_forwardWhich of these statements is best supported by these data? Experimental Plot Wavelength Wave intensity Crop Yields (4m x 15m) (nm) (Joules/m²) (g/m²) A 357.6 110 B 357.6 8 110 357.6 20 30 D 357.6 25 20 a. Wheat plants exposed to high-intensity ultraviolet light produce fewer seeds. b. Chloroplasts of wheat are able to filter out low-intensity ultraviolet light. c. High-intensity ultraviolet light may be used to control weed growth. d. No exposure to ultraviolet light increases pollination in wheat plants. Write three observations Write one inference answerarrow_forwardWhich hormone is associated with amylase production? Select one: a. gibberellin b. ethylene c. auxin d. cytokinin e. abscisic acidarrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Basic Clinical Lab Competencies for Respiratory C...NursingISBN:9781285244662Author:WhitePublisher:Cengage
Basic Clinical Lab Competencies for Respiratory C...
Nursing
ISBN:9781285244662
Author:White
Publisher:Cengage