57. Darwin and Darwin discovered that the coleoptile bends towards the light only when а. The seedling is growing in blue light. b. measures 5 cm long С. The nights are cooler d. The tip of the coleoptile is intact and exposed to light.

57. Darwin and Darwin discovered that the coleoptile bends towards the light only when а. The seedling is growing in blue light. b. measures 5 cm long С. The nights are cooler d. The tip of the coleoptile is intact and exposed to light.

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter27: Reproduction And Development Of Flowering Plants

Section: Chapter Questions

Problem 3SA

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Concept explainers

Plant sensory system

The plant sensory system is a sophisticated system that responds to environmental stimuli such as light,temperature, gravity, and touch. Research predicts that plant hormones and signaling mechanisms areresponsible for this regulation system in plants.

Question

57. Darwin and Darwin discovered that
the coleoptile bends towards the light
only when
а.
The seedling is growing in blue light.
b.
measures 5 cm long
С.
The nights are cooler
d.
The tip of the coleoptile is intact and
exposed to light.

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