Amnion and chlorion consist of

Options

A. Somatopleure
B. Splanchnopleure
C. Somatic mesoderm
D. Primary spermatocyte and spermatid.

Answer

To solve the question regarding what amnion and chorion consist of, we can break it down into the following steps:

### Step-by-Step Solution:

1. **Understanding Amnion and Chorion**:
- The amnion and chorion are both extra-embryonic membranes that play crucial roles in the development of embryos in amniotes (reptiles, birds, and mammals).

2. **Identifying the Origin**:
- Both the amnion and chorion are formed from the embryonic tissues during development. Specifically, they arise from the lateral mesoderm and ectoderm.

3. **Considering the Options**:
- The options provided are:
A. Somato pleurae
B. Splanchnic mesoderm
C. Somatic mesoderm
D. Primary spermatocyte unspermatated

4. **Analyzing the Correct Option**:
- The term "somato pleurae" refers to the lateral plate mesoderm that contributes to the formation of the body wall and associated structures. Since both the amnion and chorion are derived from the somatic layer of the lateral plate mesoderm, option A (somato pleurae) is the correct answer.

5. **Conclusion**:
- Therefore, the correct answer to the question is **A. Somato pleurae**.