Given below are the general characters of a phylum .Identify the phulum .
(i) Extracellular and intracellular digestion
(ii) Tissue level of organization
(iii) Indirect development (iv) No asexual reproduction

Options

A. Cnidaria
B. Porifera
C. Ctenophora
D. Rotifera

Answer

To identify the phylum based on the given general characters, we will analyze each characteristic step by step.

### Step-by-Step Solution:

1. **Extracellular and Intracellular Digestion**:
- This characteristic indicates that the organisms can digest food both outside their cells (extracellular) and inside their cells (intracellular). This feature is not common in all phyla, so we need to consider which phyla exhibit this type of digestion.

**Hint**: Look for phyla that are known for having both types of digestion.

2. **Tissue Level of Organization**:
- The presence of a tissue level of organization suggests that the organisms have specialized cells that work together to perform specific functions. This rules out phyla like Porifera, which do not have true tissues.

**Hint**: Remember that Porifera (sponges) lack true tissues and are therefore not a candidate.

3. **Indirect Development**:
- Indirect development means that the organism goes through a larval stage before reaching adulthood. This is common in several phyla, so we need to keep this characteristic in mind as we narrow down our options.

**Hint**: Consider which phyla are known for having a larval stage in their life cycle.

4. **No Asexual Reproduction**:
- This is a crucial characteristic. Many phyla, such as Cnidaria and Porifera, reproduce asexually through methods like budding or fission. The absence of asexual reproduction suggests that we are looking for a phylum that primarily reproduces sexually.

**Hint**: Think about which phyla are known for sexual reproduction only.

### Conclusion:
Based on the analysis of the characteristics:
- **Porifera** can be eliminated due to the lack of tissue organization.
- **Cnidaria** can be eliminated because they reproduce asexually.
- **Rotifera** can be eliminated as they also reproduce asexually.
- **Ctenophora** is the only phylum left that fits all the criteria: it has extracellular and intracellular digestion, tissue level organization, indirect development, and does not reproduce asexually.

Thus, the correct answer is **Ctenophora**.