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Which of the following is an example of chemotropism?
(a)Growth of pollen tubes towards ovules
(b)Stem of plant tilting toward the direction of light
(c)Root of plant moving away from light
(d)All of the above

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Important Questions on Chemical Coordination
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Plant response in the direction of light. Explain with figure.

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In figure (a), (b) and (c), which of the following appears more accurate and why?

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State one difference in each of the following with respect to aspect stated in the bracket.
Differentiate between: Thigmotropism and chemotropism (movement of plants in response to).

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State one difference between each of the following pairs of terms:
Thigmotropism and Chemotropism.

