Question

Assertion (A): Mitochondria and chloroplasts are semi-autonomous organelles.

Reason (R): They are formed by the division of pre-existing organelles, and also contain DNA but lack protein synthesising machinery.

• A. Both A and R are correct and R is the correctexplanation of A
• B. Both A and are correct, but R is not the correctexplanation of A
• C. A is correct, but R is incorrect
• D. Both A and R are incorrect

Answer 1

The correct option is D

The assertion is correct, but the Reason is incorrect

Explanation :

1. Mitochondria and chloroplasts are semi-autonomous cell organelles containing their own DNA and protein-synthesizing machinery.
2. They arise from pre-existing organelles and their functions are partially controlled by the cell's nucleus and the organelles themselves.