Question

Assertion (A): To generate only a part of the plant from a cell is totipotency.
Reason (R): Suitable special nutrient media and sterile conditions are required in ‘in vitro’ conditions for the division of cells in explants.

• A. Both (A) and (R) are true and (R) is the correct explanation of (A).
• B. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
• C. (A) is true, but (R) is false.
• D. (A) is false, but (R) is true.

Hint:

Totipotency means a cell can form a whole plant, not just a part, and in vitro conditions support this process.

Answer 1

The Correct Option is D

Step 1: Totipotency refers to the ability of a plant cell to regenerate into an entire plant, not just a part — Assertion is false.
Step 2: Sterile conditions and nutrient media are indeed required for in vitro culture of explants — Reason is true.
Step 3: Since Assertion is false but Reason is true, option (D) is correct.