Question

The Quiescent centre in root apex is defined correctly by which of the following? A. group of relatively inactive cells B. group of inactive cells that never divide C. group of infrequently dividing cells D. lies between protoderm and procambium E. derived from hypophysis of embryo. Choose the correct answer from the options given below:

• A. A and E only
• B. A, C and E only
• C. A and C only
• D. B, D and E only

Hint:

Remember that quiescent centre cells are relatively inactive but capable of division.

Answer 1

The Correct Option is C

Step 1: Concept
Quiescent centre in root apex

Step 2: Meaning
A group of cells in the root apex that are relatively inactive but have the ability to divide under certain conditions.

Step 3: Analysis
Option A states 'group of relatively inactive cells', which is correct as these cells are not actively dividing. Option E, however, is incorrect because the quiescent centre is not derived from the hypophysis of the embryo. Option B incorrectly suggests that these cells never divide, which contradicts the concept of a quiescent centre having the potential to divide under certain conditions. Option C correctly mentions 'group of infrequently dividing cells', aligning with their function in the root apex. Option D includes incorrect options regarding its location and origin.

Step 4: Conclusion
The correct description is provided by A (relatively inactive cells) and C (infrequently dividing cells). Final Answer: (C)