Study of abnormal embryonic growth comes under

Options

A. Teratology
B. Embryology
C. Teleology
D. Gerontology.

Answer

To solve the question "Study of abnormal embryonic growth comes under," we need to analyze the options provided and identify which one relates specifically to abnormal embryonic growth.

### Step-by-Step Solution:

1. **Understand the Question**: The question asks about the study of abnormal embryonic growth. We need to identify which of the given options relates to this specific area of study.

2. **Analyze the Options**:
- **Teratology**: This is the study of abnormalities in organisms during development, particularly focusing on congenital malformations and the effects of teratogens (agents that cause malformation).
- **Embryology**: This is the branch of biology that deals with the formation, early growth, and development of living organisms. It encompasses the study of embryos and their development.
- **Teleology**: This is a philosophical concept that explains phenomena by their purposes rather than their causes. It is not related to biological growth or development.
- **Gerontology**: This is the study of aging and the issues associated with it, not related to embryonic growth.

3. **Identify the Correct Answer**:
- Given that the question specifically refers to "abnormal embryonic growth," the most appropriate field of study is **Teratology**, as it focuses on abnormalities during development. While embryology is related to the study of embryos, it does not specifically focus on abnormalities.

4. **Conclusion**: The correct answer to the question is **Teratology**.

### Final Answer:
The study of abnormal embryonic growth comes under **Teratology**.