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Question 35: (a) Define geotropism. Give one example of geotropism. (b) What is meant by ‘positive geotropism’ and ‘negative geotropism ? Give one example of each type. Draw a labelled diagram to illustrate your answer indicating the plant part which shows positive geotropism and the plant part which shows negative geotropism. (c) Name one plant part which exhibits positive thigmotropism. Lakhmir Singh Biology Class 10 |
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Answer» ,Geotropism is the response to gravity in which different parts of a plant grow in OPPOSITE DIRECTIONS LIKE a root grows downwards WHEREAS the stem wo states are :(B) (1) POSITIVE GEOTROPISM (growing with gravity) (2) NEGATIVE GEOTROPISM (growing against gravity)EX of positive geotropism :movement of roots ex of negative geotropism : movement of stem(c)chui-mui |
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