Which region of the root is responsible for the growth of the root in length?

The correct option is A

Region of elongation

The correct option is A.

Explanation of the correct answer:

1. In the region of elongation. the cells increase in length, thereby increasing the length of the roots.
2. It is located proximal to the region of meristematic activity.

Explanation of the incorrect options:

Option B:

Meristematic tissues undergo differentiation to form vascular elements

Option C:

The root cap protects the plant and controls its geotropic movement.

Option D:

In the region of maturation, the cells mature into primary tissues.

Final answer: The region of elongation is responsible for the growth of the root in length.