Assertion : Primary growth of the plants contributes to the elongation of the plants along their axis.
Reason : Root apical meristem and shoot apical meristem are responsible for primary growth of the plants.

Options

A. If both assertion and reason are true and reason is the correct explanation of assertion
B. If both assertion and reason are true but reason is not the correct explanation of assertion
C. If assertion is true but reason is false
D. If both assertion and reason are false

Answer

a

Explanation

Plant growth is unique because plants retain the capacity for unlimited growth throughout their life. This ability of the plants is due to the presence of meristems at certain locations in their body. The cells of such meristems have the capacity to divide and self-perpetuate. The root apical meristem and shoot apical meristem ae indeterminate meristems, because these meristems continue their activity throughout life of the plant. Root apical meristem and shoot apical meristem cause primary growth of plants. It also causes the elongation of the plants along their axis.