Excretory pores present in Ascaris are

Options

A. One
B. Two
C. One pair
D. Two pairs

Answer

To answer the question regarding the number of excretory pores present in Ascaris, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Organism**: Recognize that Ascaris is a type of roundworm and is classified under the phylum Nematoda.

2. **Understand the Anatomy**: Ascaris has a long, cylindrical, and unsegmented body. It has a mouth located at the anterior end, which is surrounded by three lips.

3. **Excretory System Overview**: In Ascaris, the excretory system is composed of a canalicular network that serves to remove waste products from the body.

4. **Locate the Excretory Pore**: The excretory duct in Ascaris extends from the left side of the canalicular network and leads to a single excretory pore.

5. **Determine the Number of Excretory Pores**: The excretory pore is located mid-ventrally on the anterior side of the body, and it is confirmed that there is only one excretory pore present in Ascaris.

6. **Conclusion**: Based on the information gathered, the correct answer to the question is that Ascaris has one excretory pore.

### Final Answer:
The excretory pores present in Ascaris are **one**.

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