Canal system of porifera is not connected with

Options

A. Food gathering
B. Respiratory gas exhcnage
C. removal of wastes
D. Locomotion

Explanation

### Step-by-Step Solution:

1. **Understanding the Canal System in Porifera**:
- The canal system in Porifera (sponges) is a unique feature that consists of a network of pores and canals. This system plays a crucial role in various physiological processes.

2. **Functions of the Canal System**:
- The canal system is primarily involved in:
- **Nutrition**: It helps in food gathering by filtering water that contains food particles.
- **Respiration**: The canal system facilitates gas exchange by allowing oxygen to enter and carbon dioxide to exit through the water flow.
- **Excretion**: It aids in the removal of waste products from the sponge's body.

3. **Analyzing the Options**:
- The question asks which function the canal system is **not** connected with. The options provided are:
- A) Food gathering
- B) Respiratory gas exchange
- C) Removal of wastes
- D) Locomotion

4. **Evaluating Each Option**:
- **A) Food gathering**: The canal system is directly involved in nutrition and food gathering. (Not the answer)
- **B) Respiratory gas exchange**: The canal system also plays a role in respiration. (Not the answer)
- **C) Removal of wastes**: The canal system helps in excretion and waste removal. (Not the answer)
- **D) Locomotion**: The canal system does not facilitate locomotion in Porifera. Sponges are generally sessile (non-moving) organisms.

5. **Conclusion**:
- The canal system of Porifera is not connected with locomotion. Therefore, the correct answer is **D) Locomotion**.