Question

The position of root apex/root apical meristem is
A. Lateral
B. Terminal
C. Sub-terminal
D. Intercalary

Answer 1

Hint:- Roots are the structures which provide anchorage to the plant. They grow beneath the soil and absorb nutrients and water for the plant. Some of the roots have high nutritional value and are therefore eaten. Some examples of edible roots are radish, turnip, carrot, and sweet potato.

Complete step-by-step solution:-
The plant's tender root apex is protected by the root cap, which is also known as the Calyptra. The calyptra functions as to ease the penetrating of the root into the soil by secreting mucilage. The meristematic region of the plant generates the root cap.
The root apex in plants shows positively geotropic movement and negatively phototropic. At the root apex's terminal region, a cup-like structure is present, called a root cap, and formed of specialized internal meristematic cells.
Thus, we can say that this root cap protects the root apex.
The root apex is present at the sub-terminal location because of the presence of the root cap.
Thus, the correct option is (C). Sub-terminal.

Additional information:- Roots are categorized into taproots and fibrous roots. These roots differ in their structure and appearance. Fibrous roots do not have lateral branches. The leaves of the plants having fibrous roots show parallel venation. In contrast, reticulate venation is seen in the leaves of the plants with taproots. Taproots have lateral branches arising from the main root.

Note:- The roots are one of the plants' primary parts, apart from leaves and stems. There are several functions performed by the roots to ensure the survival of the plant. The roots' primary function is to support the plant and absorb nutrients and water from the soil. In some of the roots, chlorophyll, a green-colored pigment, is present, which performs photosynthesis.