WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
5th Edition
ISBN: 9781319272531
Author: PHELAN
Publisher: MAC HIGHER
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Chapter 20, Problem 10MC
Summary Introduction
Introduction:
The shoots of a plant seek light and grow towards this light, due to phototropism.
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Chapter 20 Solutions
WHAT IS LIFE? GDE.TO BIOLOGY W/PHYSIO.
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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_forwardExamples of plant hormones includea. cyclic AMP, IP3, and calcium ions.b. calcium, CDPKs, and DELLA proteins.c. auxin, cytokinin, and gibberellin.d. cryptochrome, phototropin, and phytochrome.e. statoliths, pulvini, and aerenchyma.arrow_forwardCytokinins, which control root and shoot meristem activities, apical dominance, leaf senescence, root vs. shoot differentiation in tissue culture, are synthesized at transported through and A. root apical meristems, xylem B. shoot apical meristems, xylem C. root and shoot apical meristems, phloem D. young shoots and seeds, phloem and xylemarrow_forward
- Which of the following statements is/are FALSE for CAM plants? a.The dark reaction uses less ATP and NADPH than other plants. b.Succulents and tropical plants growing under semi-arid condition. c.C4 pathway occurs at night and C3 pathway occurs at daytime. d.Scotoactive stomata are open during daytime but close at nighttime.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_forwardWhich of the following may stimulate the growth of the roots in plant cuttings? Select one: a. The use of auxins. b. A decrease in soil minerals. c. A decrease in enzymes. d. The use of endocrine secretions.arrow_forward
- The 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_forwardGaseous 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_forwardA difference between monocot and dicot plant stems is thea. absence of buds in monocots.b. organization of vascular tissue.c. presence of guard cells.d. absence of stomata.arrow_forward
- Many different treatments were possible in the phototropism experiment. Based on your understanding of phototropism, provide predictions about the direction of plant growth for the following two scenarios, and explain your reasoning. 1. The tip of the coleoptile is removed and lanolin with auxin is applied to the dark side of the stem. 2. The tip of the coleoptile is removed and lanolin with auxin is applied to the light side of the stem.arrow_forwardwhich of the following best describes the seeds of dicots? a. the seeds produce only one cotyledon with no endosperm b. the seeds contain two cotyledons with endosperm c. the seeds contain two cotyledon and very little endosperm d. an example is bean e. c and darrow_forwardThigmotropism is a plant response toa. light. b. cold.c. touch. d. gravity. e. drought.arrow_forward
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