Which one is the second largest animal phylum?

Options

A. Mollusca
B. Arthopoda
C. Chordata
D. Cnidaria

Answer

To determine which is the second largest animal phylum, we can follow these steps:

### Step 1: Understand the Animal Phyla
- The animal kingdom is divided into various phyla based on certain characteristics. The largest phylum is Arthropoda, which includes insects, arachnids, and crustaceans.

### Step 2: Identify the Options
- The options provided are:
1. Mollusca
2. Arthropoda
3. Chordata
4. Sinatraa (which seems to be a typo or incorrect option)

### Step 3: Analyze Each Option
- **Arthropoda**: This is the largest phylum, so it cannot be the answer.
- **Chordata**: This phylum includes vertebrates and is also significant but is not larger than Mollusca.
- **Mollusca**: This phylum includes a wide variety of organisms such as snails, clams, and octopuses. It is known for its diversity and is indeed the second largest phylum.
- **Sinatraa**: This option does not correspond to any recognized animal phylum.

### Step 4: Conclusion
- Based on the analysis, the second largest animal phylum is **Mollusca**.

### Final Answer
The second largest animal phylum is **Mollusca**.

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