Embrology is

Options

A. Development of embryo only
B. Mode of gametopynic formation
C. Sporogenesis and fertilisation
D. Sporogenesis, fertilisation and embryo genesis

Answer

**Step-by-Step Solution:**

1. **Understanding Embryology**:
- Embryology is defined as the branch of science that studies embryos and their development. It encompasses various processes that lead to the formation and growth of an embryo.

2. **Key Processes in Embryology**:
- The study of embryology includes several key processes:
- **Gametogenesis**: This is the formation of gametes (sperm and eggs) which is essential for fertilization.
- **Fertilization**: This is the process where male and female gametes unite to form a zygote.
- **Embryogenesis**: This refers to the development of the zygote into an embryo through various stages of cell division and differentiation.

3. **Evaluating the Options**:
- **Option A**: "Development of embryo only" - This is incorrect because embryology includes more than just the development of the embryo; it also covers gamete formation and fertilization.
- **Option B**: "Mode of gametophytic formation" - This is incorrect as it focuses solely on gamete formation without including fertilization or embryogenesis.
- **Option C**: "Sporogenesis and fertilization" - This option is also incorrect because it does not mention embryogenesis, which is a crucial part of embryology.
- **Option D**: "Sporogenesis, fertilization, and embryogenesis" - This is the correct answer as it encompasses all the essential processes involved in embryology.

4. **Conclusion**:
- Therefore, the correct answer is **Option D**: "Sporogenesis, fertilization, and embryogenesis."

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