Oenocytes occur in

Options

A. Blood
B. Epidermis
C. Malpighian tubules
D. Crop

Answer

To answer the question "Oenocytes occur in:", we will analyze the information provided in the video transcript step by step.

### Step-by-Step Solution:

1. **Understanding Oenocytes**: Oenocytes are specialized cells that are involved in the synthesis of cuticular waxes in insects, particularly in cockroaches.

**Hint**: Oenocytes are related to the production of substances that help in the waterproofing of the insect's exoskeleton.

2. **Identifying the Location**: According to the transcript, oenocytes are mentioned in relation to the epidermis of the cockroach. The epidermis is the outermost layer of cells in the insect's body.

**Hint**: Think about where in an insect's body the production of cuticular wax would take place.

3. **Excluding Other Options**: The transcript states that oenocytes do not occur in the blood of cockroaches. It also mentions that malpighian tubules are excretory organs and not related to oenocytes.

**Hint**: Eliminate options that do not relate to the outer covering or integument of the insect.

4. **Conclusion**: Based on the information provided, the correct answer is that oenocytes occur in the epidermis of the cockroach.

**Hint**: Remember that the epidermis is crucial for the production of protective substances in insects.

### Final Answer:
Oenocytes occur in the epidermis.