Biology
5th Edition
ISBN: 9781260487947
Author: BROOKER
Publisher: MCG
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Textbook Question
Chapter 37, Problem 7TY
Thigmotropism is a plant response to
- a. light.
- b. cold.
- c. touch.
- d. gravity.
- e. drought.
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Thigmotropism is a plant response toa. light. b. cold.c. touch.
d. gravity.
e. drought.
Which of the following statements about phototropism is/are not true?
A. Red light is the most effective light wavelength for positive phototropism of plants.
B. Higher auxin concentration on the lighted side causes that side to elongate more than the non illuminated side.
C. Phototropins are the only effective light receptors in phototropism.
D. Phototropism decreases the plant's ability to enhance photosynthetic capacity.
E. All of the above
F. None of the above
Root cells exhibit positive gravitropism with the help ofa. auxin in the root cells.b. amyloplasts in root cells.c. exposure to sunlight.d. a nearby substrate.
Chapter 37 Solutions
Biology
Ch. 37.1 - Prob. 1CSCh. 37.2 - Prob. 1CCCh. 37.2 - Prob. 1EQCh. 37.2 - Prob. 2EQCh. 37.2 - Prob. 2CCCh. 37.2 - Prob. 3CCCh. 37.3 - Prob. 1CCCh. 37.3 - What would happen if you gave flowering plants a...Ch. 37.3 - Prob. 3CCCh. 37.3 - Prob. 4CC
Ch. 37 - Prob. 1TYCh. 37 - Prob. 2TYCh. 37 - Prob. 3TYCh. 37 - Prob. 4TYCh. 37 - Prob. 5TYCh. 37 - Prob. 6TYCh. 37 - Thigmotropism is a plant response to a. light. b....Ch. 37 - Which response is an adaptation to flooding? a....Ch. 37 - Prob. 9TYCh. 37 - Prob. 10TYCh. 37 - Prob. 1CQCh. 37 - Why do plants produce so many types of resistance...Ch. 37 - Prob. 3CQCh. 37 - Prob. 1COQCh. 37 - Prob. 2COQ
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- Stems and roots, respectively, exhibit a. a positive phototropic response and no phototropic response. b. a negative phototropic response and no phototropic response. c. no phototropic response and a positive phototropic response. d. no phototropic response and a negative phototropic response.arrow_forwardWhich of the following statements about gravity perception is FALSE? A. Statoliths are specialized amyloplasts B. Statoliths are found in statocytes C. Gravity is sensed from the root cap acropetally through the zone of division D. Columella cells sense gravity through statolith pressure on the endoplasmic reticulum E. Auxin is the main hormone involved in gravity responsearrow_forwardChoose the best answer for following question Stomata close when a plant is water-stressed. a. auxin d. ethyleneb. gibberellin e. abscisic acidc. cytokininarrow_forward
- The ability of a sunflower plant to become taller is directly due to its a. apical meristem. c. mesophyll cells. b. lateral meristems. d. taproot system.arrow_forwardWhich of the following is/are false regarding the phloem? A. It transports starch from the leaves to the stem. B. It transports sucrose from the leaves to the roots. C. It is located lateral to the xylem in tree stems. D. Unlike the xylem, majority of the cells are living. E. A and D F. B and Carrow_forwardPhytochrome is a plant pigment protein that: a. mediates plant infection b. promotes plant growth c. mediates morphological changes in response to red and far-red light d. inhibits plant growtharrow_forward
- Roots storing food are found in: a. Potatoes. b. Aloes. Onions. d. Ginger. e. Carrots.arrow_forwardThe apical bud of a plant produces which inhibits lateral bud growth through the process known as apical dominances. Select one: O a. Auxin O b. Cytokinin O c. Ethylene O d. Gibberellin O e. Abscisic Acidarrow_forwardPlant bends towards the source of light on account of the movement of curvature known as: A. geotropism B. thigmotropism C. chemotropism D. phototropismarrow_forward
- Gaseous hormones are able to enter cells without requiring specialmembrane transporter. Which of the major plant hormones is adiffusible gas?a. auxin b. gibberellin c. cytokinin d. ethylene e. abscisic acidarrow_forwardWhich of the following plants requires light hours above than critical photoperiod for flowering? a.Henbane b.Tobacco c.Pepper d.Cucurbitarrow_forward1. Complete the following statement: The response of plant roots to grow in the direction of a water source is known as – a. phototropism c. gravitropismb. hydrotropismd. thigmotropism 2. Complete the following statement: The response of a plant to grow toward a light source is known as – a. gravitropismc. phototropismb. hydrotropismd. thigmotropism 3. Complete the following statement: The response of a plant to grow in the direction of gravity is known as – a. phototropismc. thigmotropismb. hydrotropismd. gravitropism 4. Plant roots are positively gravitropic; what does this mean? a. They are positively attracted to soil.b. They grow toward the direction of gravity.c. They grow away from other plant roots.d. They grow in the opposite direction to sunlight. 5. Plant shoots are positively phototropic; what does this mean? a. They grow toward a light stimulus.b. They grow toward other brightly colored plants.c. They grow away from bright sunlight.d. They reflect the majority of the…arrow_forward
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How do Plants Handle Stress?; Author: Alex Dainis;https://www.youtube.com/watch?v=TYsnveEHqec;License: Standard Youtube License