Practicing Success

Target Exam

CUET

Subject

Biology

Chapter

Morphology of Flowering Plants

Question:

Roots hairs develop from which region of the root ?

Options:

Region of maturation

Meristematic region

Zone of elongation

Region of root cap

Correct Answer:

Region of maturation

Explanation:

The correct answer is Option (1)- Region of maturation

The root is covered at the apex by a thimble-like structure called the root cap . It protects the tender apex of the root as it makes its way through the soil. A few millimetres above the root cap is the region of meristematic activity.

The cells of this region are very small, thin-walled and with dense protoplasm. They divide repeatedly. The cells proximal to this region undergo rapid elongation and enlargement and are responsible for the growth of the root in length. This region is called the region of elongation.

The cells of the elongation zone gradually differentiate and mature. Hence, this zone, proximal to region of elongation, is called the region of maturation. From this region some of the epidermal cells form very fine and delicate, thread-like structures called root hairs. These root hairs absorb water and minerals from the soil .