Before testing a potted plant leaf for starch, why must the plant be kept in a dark room for 48-72 hours?

Type: MCQ • Marks: 1

A. To open stomata completely

B. To destroy chlorophyll

C. To kill leaf cells

D. To destarch the leaf by utilizing stored starch for respiration

Explanation

Keeping the plant in darkness stops photosynthesis, forcing the plant to consume existing starch reserves (destarching).

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Class 7th Curiosity

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