Question

13. Tender Cabbage leaves appear white in colour. When it exposed to sunlight turn to green colour. Write reason for this change.
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Answer 1

Explanation:

A leaf appears green in daylight because it absorbs all wavelengths of visible light spectrum except the green colour, and therefore it appears green as they reflect it. But when solely red light is given to the leaf, it will absorb the red light and therefore appears as black.

Answer 2

Answer:

The condition is called chlorosis and it means the plant is not producing enough chlorophyll to look green. Since chlorophyll uses sunlight to make food for the plant, it's a sign the plant is in distress

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