Digestion in Periplanata begins in

Options

A. Crop
B. Preoral cavity
C. Midgut
D. Pharaynx

Answer

To solve the question "Digestion in Periplanata begins in," we will analyze the digestive process of the cockroach (Periplanata) step by step.

### Step-by-Step Solution:

1. **Understanding Periplanata**:
- Periplanata is the scientific name for the cockroach, which belongs to the phylum Arthropoda.

2. **Food Intake**:
- The digestion process starts when the cockroach takes in organic food through its mouthparts.

3. **Preoral Cavity**:
- After the food is taken in, it first enters the preoral cavity. This is a space where initial processing begins before the food moves further down the digestive tract.

4. **Mouth and Saliva Mixing**:
- From the preoral cavity, the food then moves into the mouth, where it mixes with saliva. This is an important step as saliva contains enzymes that begin the digestion process.

5. **Crop**:
- After the mouth, the food passes through the esophagus into the crop. The crop primarily serves as a storage area for the food, not the initial site of digestion.

6. **Midgut**:
- Following the crop, the food enters the midgut, where the actual digestion occurs with the help of various enzymes.

7. **Hindgut**:
- Finally, the undigested food moves into the hindgut for absorption, and waste is expelled through the anus.

8. **Conclusion**:
- Since the question asks where digestion begins, it is important to note that the initial digestion starts in the preoral cavity, not in the crop or midgut.

### Final Answer:
- The correct answer is **preoral cavity**.

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