Question 1
Question detail
Explain how the distribution of auxin influences gravitropism in plants.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Plant hormones (biology only)
Question
Explain how the distribution of auxin influences gravitropism in plants.
Answer
In gravitropism, auxin is distributed unevenly in response to gravity. In the roots, auxin accumulates on the lower side, inhibiting growth and causing the root to bend downwards. Conversely, in the shoots, auxin accumulates on the lower side, promoting growth and causing the shoot to bend upwards.
Explanation
This answer effectively explains the role of auxin in gravitropism, highlighting the mechanism of uneven distribution and its effects on growth direction. The question assesses the student's ability to connect plant hormones with their physiological effects on growth responses.
Common mistake
Misunderstanding Gravitropism
Students often confuse gravitropism with phototropism, thinking both responses are triggered by light.
Clarify that gravitropism specifically refers to a plant's growth response to gravity, while phototropism is the response to light.
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