Which tissue is commonly seen in root and stem of both dicots and monocots?A     Apical meristemB     Intercalary meristemC     Lateral meristemD     Collenchyma

The tissue commonly seen in root and stem of both dicots and monocots is Apical meristem (Option A).

Here's why:

1. Apical meristem: This is the tissue in most plants consisting of undifferentiated cells (meristematic cells), found in the areas of the plant where growth can take place. These areas are primarily in the root and stem tips, or apices. This tissue is responsible for the linear growth of plants, and is present in both dicots and monocots.

2. Intercalary meristem: This type of meristem is found only in monocots, particularly in grasses and certain other flowering plants. It is not present in dicots.

3. Lateral meristem: This type of meristem is responsible for the growth in thickness of plants, which is common in dicots but not in monocots.

4. Collenchyma: This is a type of ground tissue cell in plants that provides support and structure. While it is present in both dicots and monocots, it is not as universally present in the roots and stems as the apical meristem.

Therefore, the correct answer is A - Apical meristem.