Meristematic cells do not show

Options

A. A large conspicuous nucleus
B. Ergastic substances like tannins, Resins etc.
C. Active metabolism
D. Proplastids

Answer

**Step-by-Step Solution:**

1. **Understanding Meristematic Cells:**
- Meristematic cells are specialized cells found in plants that are responsible for growth. They are located in regions of the plant that are actively growing, such as the tips of roots and shoots.

2. **Characteristics of Meristematic Cells:**
- These cells are known for having a large, conspicuous nucleus. This is because they are actively dividing and need to manage a lot of cellular processes.
- They also contain large vacuoles for storage, which helps in maintaining turgor pressure and storing nutrients.

3. **Identifying the Options:**
- The question asks what meristematic cells do not show. The options provided are:
- A) Large conspicuous nucleus
- B) Ergastic substances like tannins and resins
- C) Active metabolism
- D) Protoplastids

4. **Analyzing Each Option:**
- **Option A:** Meristematic cells do have a large conspicuous nucleus, so this option is incorrect.
- **Option B:** Ergastic substances like tannins and resins are not found in meristematic cells; they are typically found in parenchyma cells (specifically ideoblasts). Therefore, this option is correct.
- **Option C:** Meristematic cells exhibit active metabolism due to their role in growth and division, so this option is incorrect.
- **Option D:** Protoplastids are present in meristematic cells, as they are involved in various cellular functions, so this option is incorrect.

5. **Conclusion:**
- Based on the analysis, the correct answer is that meristematic cells do not show ergastic substances like tannins and resins.

**Final Answer:**
Meristematic cells do not show ergastic substances like tannins and resins.

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