Ctenoplana is characterized by

Options

A. cnidocytes
B. choanocytes
C. bisexual nature
D. spongocoel

Answer

To answer the question about the characteristics of Ctenoplana, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Ctenoplana**:
- Ctenoplana is a type of organism that belongs to the phylum Ctenophora. It is important to understand the basic classification and characteristics of this group.

2. **Identifying Key Characteristics**:
- Ctenoplana exhibits several key characteristics:
- They are marine organisms.
- They have a tissue level of organization.
- They are diploblastic, meaning they have two germ layers (ectoderm and endoderm).
- They exhibit radial symmetry.

3. **Analyzing the Options**:
- The question provides four options: Nido sites, Chono sites, Bisexual nature, and Spongy sewer.
- We need to determine which of these characteristics is specifically associated with Ctenoplana.

4. **Determining the Correct Characteristic**:
- Among the options:
- **Nido sites**: Not a characteristic of Ctenoplana.
- **Chono sites**: Not relevant to Ctenoplana.
- **Bisexual nature**: Ctenoplana are known to have both male and female reproductive organs in the same individual, which is referred to as being bisexual.
- **Spongy sewer**: This is not a characteristic associated with Ctenoplana.

5. **Conclusion**:
- The correct answer is **Bisexual nature**, as Ctenoplana possesses both male and female reproductive organs within the same body.

### Final Answer:
Ctenoplana is characterized by **Bisexual nature**.