Question

Intercalary meristem at base of Pinus leaves or nodes of grasses is responsible for

• A. Primary growth
• B. Secondary growth
• C. Phellem formation
• D. Abscission formation

Answer 1

The correct option is A Primary growth

Intercalary meristem at base of leaves or nodes of grasses is responsible for primary growth. Meristems are classified by their location in the plant as apical located at root and shoot tips, lateral in the vascular and cork cambia, and intercalary at internodes or stem regions between the places at which leaves attach, and leaf bases. Intercalary meristem cells possess the ability to divide and produce new cells, as do apical and lateral meristems. They differ, however, in being situated between regions of mature tissue, such as at the base of grass leaves, which are themselves located on mature stem tissue.
Therefore, the correct answer is option A.