The response of different organisms to the environmental rhythms of light and darkness is called :
Correct answer: B. Photoperiodism
- A. Vernalization
- B. Photoperiodism
- C. Phototaxis
- D. Phototropism.
Explanation
b) : Photoperiodism is the response of plants to relative length of light and darkness. Phototaxis is plant movement where the stimulus is light. Phototropism is tropism in which stimulus is light. Vernalization is application of cold treatment to plants to effect flowering.
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