Question

In grasses, the length of the internodes increases by the activity of ------------------------

• A. Apical meristem
• B. Intercalary meristem
• C. Lateral meristem
• D. Secondary meristem

Answer 1

The correct option is B

Intercalary meristem

The correct option is B.

Explanation of the correct option:

1. Intercalary meristem is the meristem that undergoes division to produce new cells, and these cells are responsible for increasing the length of the internodes.
2. These are located in the nodal region of the plant.

Explanation of the incorrect option:

Option A:

1. Apical meristem is present at the tip of the root and shoots of the plant and thus is responsible for increasing the length of the plant at the tip only.

Option C:

1. Lateral meristem is present at the longitudinal axis of the root and shoot of the plant and is responsible for the thickness of the plant.

Option D:

1. The secondary meristem or lateral meristem is the meristem that includes vascular cambium and cork cambium and is responsible for increasing the diameter of the plant.
2. It is mainly associated with the secondary growth of the plant.

Final answer:

1. In grasses, the length of the internodes increases by the activity of the intercalary meristem.