Question

The region of root hair in a root lies behind
A. Region of maturation
B. Region of elongation
C. Meristematic region
D. Region of root cap

Answer 1

Hint: Root hairs are where most water absorption occurs. They are long and can penetrate through soil particles and prevent the entry of harmful bacterial organisms through the xylem into the plant. For the absorption of moisture, they have a greater surface area.

Complete answer:
Root hairs have the role of absorbing water and mineral nutrients that are present in the soil and carrying this solution to the rest of the plant through the use of the roots. They do not comprise chloroplasts because root hair cells do not undergo photosynthesis. Root hair cells are indeed the outgrowth at the tip of the roots of the plant. Root hair cells vary in diameter between 15 to 17 micrometers, and in length between 80 to 1,500 micrometers. They are only located in the maturation zone, not in the elongation zone, undoubtedly, and as the root elongates and travels through the soil, and root hair that exists is sheared off. Root has three parts of prominence. The maturation zone has meristematic cells that divide. For gradual differentiation and maturation, the zone of elongation is responsible. The maturation zone has a very fine structure-like thread known as root hair. It assists in the absorption of soil water and minerals.

So, the correct answer is option (A)

Additional Information:
In nature, roots are homogeneous since they develop common organs, such as secondary and tertiary roots, from the pericycle. They are geotropically positive, hydro tropical positive, but phototropically negative. Their own food can also not be produced. Phototropism (response to light), geotropism (response to gravity) and hydrotropism (response to water) are types of tropism. A coating of plant tissue underneath the endodermis: which surrounds the roots and certain stems of the conducting tissue is named as pericycle.

Note: The root hairs bundle around the bacteria, facilitating the development of an infection thread to form the nodule through the use of the dividing cortical cells. Root hair cells may thrive for 2 to 3 weeks and then die off; young root hair cells are constantly increasing at the tip of the root around the same time. The root hair coverage tends to stay the same in this manner. When a new root hair is designed to install, it excretes a poison so that one of these hairs could not establish the other cells in close proximity to it. This ensures equal and efficient distribution on all these cells of the specific hairs.