Stomach of Earthworm has glands

Options

A. Digestive
B. Calcareous
C. Endocrime
D. Both A and B

Answer

**Step-by-Step Solution:**

1. **Understanding the Structure of the Earthworm's Stomach**:
- The stomach of the earthworm is muscular and is also referred to as the gizzard. This structure is crucial for the mechanical breakdown of food.

2. **Identifying the Glands Present**:
- The stomach of the earthworm contains two types of glands:
- **Digestive Glands**: These glands secrete digestive enzymes that help in breaking down complex food into simpler forms.
- **Calcareous Glands**: These glands are responsible for neutralizing the humic acid present in the decaying organic matter that the earthworm consumes.

3. **Function of the Glands**:
- The **digestive glands** aid in digestion by releasing enzymes that break down food.
- The **calcareous glands** help to neutralize the acidity of the humus, making it easier for the earthworm to digest the organic matter.

4. **Conclusion**:
- Since both types of glands (digestive and calcareous) are present in the stomach of the earthworm, the correct answer to the question is that the stomach of the earthworm has both digestive and calcareous glands.

5. **Final Answer**:
- The correct option is **both A and B**.

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