Intercalary Meristem:

Intercalary meristem is a type of meristem that is located between mature tissues. This meristem is responsible for the growth of internodes in grasses, which is why it is also known as the intercalary growth. It is found in the basal parts of the leaves, stem, and internodes of monocots.

Function of Intercalary Meristem:

The intercalary meristem is responsible for primary growth in plants. It helps in the elongation of the plant axis, especially in monocotyledons. It is also responsible for the regeneration of lost parts of the plant.

Answer:

The correct answer is option 'B' which states that Intercalary meristem leads to primary growth. The intercalary meristem is responsible for the primary growth of the plant, which is the elongation of the plant axis, especially in monocotyledons. The intercalary meristem is found in the basal parts of the leaves, stem, and internodes of monocots. It is responsible for the regeneration of the lost parts of the plant.

Secondary thickening, secondary overgrowth, and apical growth are not related to the intercalary meristem. Secondary thickening is due to the activity of the lateral meristem, which results in an increase in girth. Secondary overgrowth is not a term used in plant growth. Apical growth is due to the activity of the apical meristem, which results in the elongation of the plant axis.

Conclusion:

In conclusion, the intercalary meristem is responsible for primary growth in plants, which is the elongation of the plant axis, especially in monocotyledons. It is found in the basal parts of the leaves, stem, and internodes of monocots.