Question

Choose the correct statement(s) about chloroplasts.

• A. Grana is made up of stacks of disc-shaped structures.
• B. Stroma is made up of stacks of disc-shaped structures.
• C. The chloroplast is an organelle bounded by a double membrane layer.
• D. The chloroplast is bounded by stroma lamella.

Answer 1

Answer: (A), (C)

The correct options are
A

Grana is made up of stacks of disc-shaped structures.

C

The chloroplast is an organelle bounded by a double membrane layer.

Chloroplast is bounded by a double layered membrane. There are two distinct regions present inside the chloroplasts. One is grana while the other is stroma. Grana is made up of stacks of disc-shaped structures known as thylakoids. These contain the molecule chlorophyll and are the functional units of chloroplasts.