Question 1
Question detail
What is phototropism and how do plants exhibit this growth response to light?
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
What is phototropism and how do plants exhibit this growth response to light?
Answer
Phototropism is the growth response of a plant to light, where the plant bends towards the light source. This occurs due to the unequal distribution of auxin, a plant hormone, which promotes cell elongation on the side of the plant that is away from the light, causing the plant to tilt towards the light.
Explanation
This answer is strong because it clearly defines phototropism and explains the mechanism behind it, demonstrating an understanding of how plant hormones influence growth. The question tests the student's ability to describe a specific plant response and the role of hormones in that process.
Common mistake
Misunderstanding Phototropism
Students often confuse phototropism with gravitropism, thinking both responses are triggered by light.
Clarify that phototropism specifically refers to growth in response to light, while gravitropism refers to growth in response to gravity. Use diagrams to illustrate the differences.
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