Question

Observe the figure given below and identify the incorrect step for the activity set-up:

Options

• Both plants are kept in the dark room for three days before placing them in separate glass jars.

• Both plants are covered with separate wooden bell-jars.

• Use vaseline to seal the bottom of the jars with the glass plates.

• Both potted plants were kept in sunlight for a few hours before the iodine test for the presence of starch.

Answer 1

Both plants are covered with separate wooden bell-jars.

Explanation:

In this activity, plants should be covered with glass bell jars, not wooden ones, because glass allows sunlight to pass through for photosynthesis. Wooden bell jars would block light and make the experiment invalid.