Phloem parenchyma is absent in
(a) Dicots and few monocots
(b) Monocots
(c) Monocots and dorsiventral leaf
(d) Gymnosperms

Options

A. Dicots and few monocots
B. Monocots
C. Monocots and dorsiventral leaf
D. Gymnosperms

Answer

To determine where phloem parenchyma is absent, we need to analyze each option provided in the question.

### Step-by-Step Solution:

1. **Understanding Phloem Parenchyma**:
- Phloem parenchyma consists of living parenchymatous cells that are involved in the storage of food and the transport of organic substances.

2. **Analyzing the Options**:
- **Option (a)**: Dicots and few monocots
- Phloem parenchyma is present in dicots. While it may be absent in some monocots, this option cannot be correct as it includes dicots.

- **Option (b)**: Monocots
- Phloem parenchyma is indeed absent in the stems of monocots. This option is a strong candidate.

- **Option (c)**: Monocots and dorsiventral leaf
- While phloem parenchyma is absent in monocots, it is present in dorsiventral leaves (like those of dicots). Therefore, this option cannot be correct.

- **Option (d)**: Gymnosperms
- Gymnosperms do have phloem parenchyma, so this option is incorrect.

3. **Conclusion**:
- The only option that correctly states where phloem parenchyma is absent is **Option (b)**: Monocots.

### Final Answer:
**(b) Monocots**