Question

Choose the correct answer from the four options given below each statement:

A plant is kept in a dark cupboard for about 48 hours before conducting any experiment on photosynthesis to:

• A. Remove starch from the plant.
• B. Ensure that starch is not translocated from the leaves.
• C. Remove chlorophyll from the leaf of the plant.
• D. Remove starch from the experimental leaf.

Answer 1

The correct option is A

Remove starch from the plant.

Destarching of plant:

1. Photosynthesis is a biochemical process by which green plant produces glucose.
2. Glucose is stored in plants as starch.
3. If we keep a plant in a dark room for 2-3 days then the photosynthesis process will be stopped. The starch which is present in the plant cells as stored food will be used up by the plant. This process is known as destarching.

Hence, option A is the correct option.