Which of the following workers are related as ecologist, palaeobotanist and embryologist

Options

A. B. Sahni, R. Mishra, P. Maheshwari
B. R. Mishra,B.Sahni, P. Maheshwari
C. B. Sahni, P. Maheshwari, R. Mishra
D. P. Maheshwari, R. Mishra, B. Sahni

Explanation

To answer the question regarding the relationships among ecologists, palaeobotanists, and embryologists, we can break down the contributions of each of these scientists in their respective fields.

### Step-by-Step Solution:

1. **Understanding Ecologists**:
- Ecologists study the interactions between organisms and their environment.
- A prominent ecologist in India is R. Mishra (Ramdev Mishra), who contributed significantly to the field of ecology and authored the "Indian Manual of Plant Ecology."

2. **Understanding Palaeobotanists**:
- Palaeobotanists study ancient plants through fossil records.
- Birbal Sahani is a notable palaeobotanist, often referred to as the Father of Palaeobotany. He conducted extensive research on fossils, particularly Gymnosperms, and made significant discoveries in the Raj Mahal Hills of Bihar.

3. **Understanding Embryologists**:
- Embryologists focus on the study of embryos and their development.
- P. Maheshwari (Panchanan Maheshwari) is a renowned embryologist known for his work on test-tube fertilization in angiosperms, which allowed for quicker studies of seed germination.

4. **Identifying Relationships**:
- Each of these scientists is recognized for their groundbreaking work in their respective fields, contributing to our understanding of plant biology and ecology.
- R. Mishra is associated with ecology, Birbal Sahani with palaeobotany, and P. Maheshwari with embryology.

5. **Conclusion**:
- The relationships among these workers can be summarized as follows: R. Mishra is related to ecology, Birbal Sahani to palaeobotany, and P. Maheshwari to embryology. Therefore, the correct answer to the question is Option 2.