The sense organs like eyes , statocysts , and osphradia are present in

Options

A. porifera
B. Arthropods
C. Mollusca
D. Chordata

Answer

To solve the question regarding the presence of sense organs like eyes, statocysts, and osphradia, we can follow these steps:

### Step 1: Understand the Sense Organs
- **Eyes**: Organs that detect light and allow for vision.
- **Statocysts**: Organs that help in maintaining balance and orientation, commonly found in aquatic invertebrates.
- **Osphradia**: Chemosensory organs that are involved in detecting chemicals in the water, often found in mollusks.

### Step 2: Identify the Groups of Organisms
- The question provides options that likely include different groups of animals. We need to determine which group possesses all three types of sense organs.

### Step 3: Analyze Each Option
- **Option A: Chordata**: This group includes vertebrates, which have eyes but do not typically possess statocysts or osphradia.
- **Option B: Arthropoda**: While arthropods have eyes, they do not have statocysts or osphradia in the same way mollusks do.
- **Option C: Mollusca**: This group is known for having all three sense organs: eyes, statocysts, and osphradia. Mollusks are aquatic invertebrates and fit the description perfectly.

### Step 4: Conclusion
- Based on the analysis, the correct answer is **Option C: Mollusca**. Mollusks are the only group among the options that possess eyes, statocysts, and osphradia.

### Final Answer
The sense organs like eyes, statocysts, and osphradia are present in **Mollusca**.

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