Belt's corpuscles and leghaemoglobin is found in plants belonging to

Options

A. Papilionatae and calsalpinoideae respectively
B. Caesalpinoideae and Mimosoideae respectively
C. Mimosoideae and Papilionatae respectively
D. Papilionatae alone

Explanation

**Step-by-Step Solution:**

1. **Understanding the Terms**:
- Belt's corpuscles are gland-like structures found in certain plants.
- Leghaemoglobin is a protein that is involved in oxygen transport in plants, particularly in root nodules.

2. **Identifying the Plants with Belt's Corpuscles**:
- Belt's corpuscles are found in the stipules of plants.
- One of the key examples of plants that have Belt's corpuscles is from the family **Mimosaceae**.
- A specific example is the genus **Acacia**, which has these structures.

3. **Identifying the Plants with Leghaemoglobin**:
- Leghaemoglobin is primarily found in legumes.
- Legumes belong to the family **Fabaceae**, which is also known as **Papilionaceae**.
- This protein is present in the root nodules of legumes and is crucial for nitrogen fixation.

4. **Conclusion**:
- Therefore, Belt's corpuscles are found in plants belonging to the **Mimosaceae** family (like Acacia), and leghaemoglobin is found in plants belonging to the **Fabaceae** family (like legumes).

5. **Final Answer**:
- Belt's corpuscles are found in **Mimosaceae** and leghaemoglobin is found in **Fabaceae** (or Papilionaceae).

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