Question

Identify the odd one out of the following.

• A. Intercalary meristem
• B. Secondary meristem
• C. Primary meristem
• D. Promeristem

Answer 1

The correct option is A Intercalary meristem

Intercalary meristem is the odd one out here as the others are meristematic tissues classified based on the origin. Intercalary meristems are named after the position of the meristematic tissue in the plants. The intercalary meristems are formed from the apical meristems as the latter continues to divide. The intercalary meristems help in increasing the length of the plant and is most commonly seen in monocots.

Promeristems or the embryonic meristems are the first formed meristematic tissues. They are short-lived and give rise to the primary meristems. Primary meristems, derived from the promeristems, give rise to the primary permanent tissues of the plant and are responsible for the primary growth of the plant.

If the cells of the meristem originated from cells that had differentiated and resumed meristematic activity, the meristem is known as secondary meristem. It is responsible for the secondary growth of the plants which includes the increase in the girth of the plant.