Mark the correct sequence of different parts of digestive system of cockroach

Options

A. Mouth to Pharynx to Oesophagus to Crop to Gizzard
B. Mouth to Pharynx to Oesophagus to Gizzard to Crop
C. Mouth to Pharynx to Gizzard to Oesophagus to Crop
D. Mouth to Pharynx to Crop to Oesophagus to Gizzard

Answer

To determine the correct sequence of the different parts of the digestive system of a cockroach, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Starting Point**: The digestive process begins at the mouth, where the cockroach takes in food.

2. **Pharynx**: After the mouth, the food passes into the pharynx. The pharynx acts as a passage for food from the mouth to the esophagus.

3. **Esophagus**: Following the pharynx, the food moves into the esophagus. The esophagus is a tube that connects the pharynx to the crop.

4. **Crop**: The food then enters the crop, which is a storage area where the food can be held before it moves to the next part of the digestive system.

5. **Gizzard**: Finally, the food passes into the gizzard, where it is ground and mixed with digestive juices to aid in digestion.

### Correct Sequence:
- Mouth → Pharynx → Esophagus → Crop → Gizzard

### Conclusion:
The correct sequence of the digestive system parts of a cockroach is: **Mouth → Pharynx → Esophagus → Crop → Gizzard**.