Cytologically vascular cambium (lateral meristem) differs from apical meristem by

Options

A. Presence of vacuoles, storage materials and thin cell wall, isodiametric cells
B. Presence of vacuoles, storage materials and thick cell wall, isodiametric as well as radically elongated cells
C. Presence of vacuoles, storage materials and thick radial cell wall, isodiametric as well as radically elongated cells
D. Presence of vacuoles, storage materials and thin protoplasm, isodiametric cells

Explanation

**Step-by-Step Solution:**

1. **Definition of Meristems**: Understand that meristems are regions in plants where cells divide and contribute to growth. There are two main types of meristems: apical meristems and lateral meristems.

2. **Apical Meristem**: Identify that apical meristems are located at the tips of roots and shoots. They are responsible for primary growth, which leads to the elongation of the plant.

3. **Vascular Cambium**: Recognize that vascular cambium is a type of lateral meristem found between the xylem and phloem in vascular plants. It is responsible for secondary growth, which increases the thickness or diameter of the plant.

4. **Cytological Differences**: Compare the cytological features of vascular cambium and apical meristem:
- Vascular cambium contains vacuoles and storage materials.
- Vascular cambium has thick radial cell walls.
- Vascular cambium consists of isodimetric (equal in all dimensions) and radially elongated cells.
- Apical meristem lacks these features.

5. **Conclusion**: Summarize that the cytological differences between vascular cambium and apical meristem include the presence of vacuoles, storage materials, thick radial cell walls, and specific cell shapes in vascular cambium, which are absent in apical meristem.

**Final Answer**: Cytologically, vascular cambium (lateral meristem) differs from apical meristem by the presence of vacuoles, storage materials, thick radial cell walls, and isodimetric as well as radially elongated cells.

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