The given figure is of the regions of the root-tip.
Identify the labellings A, B and C.
A-region of maturation, B-region of elongation, C-region of meristematic activity.
— Concept: This question tests your understanding of the different regions of a root tip, which are crucial for root…Concept: This question tests your understanding of the different regions of a root tip, which are crucial for root growth and development.
Why (D) is correct: The root tip is organized into distinct regions. Starting from the tip, the root cap protects the meristem. Above the root cap is the region of meristematic activity (C), where cells are small, thin-walled, and actively dividing. Above this is the region of elongation (B), where cells rapidly increase in size, pushing the root deeper into the soil. Finally, the region of maturation (A) is where cells differentiate and mature into various tissue types, including root hairs.
Why other options are wrong:
- (A) Incorrect order of regions.
- (B) Incorrect order of regions.
- (C) Incorrect order of regions.
Common Mistake: Students often confuse the order of these regions or their specific functions. Remember the sequence from the tip upwards: Root Cap → Meristematic → Elongation → Maturation.
NEET Tip / Mnemonic: Think of it as a factory: Meristematic (making new cells), Elongation (expanding cells), Maturation (making them useful). Or simply, M.E.M. from bottom to top (excluding root cap).
Correct Answer: (D)
A-region of maturation, B-region of elongation, C-region of meristematic activity.