Tube feet occur in

Options

A. cockroach
B. starfish
C. cuttle fish
D. cat fish

Explanation

**Step-by-Step Solution:**

1. **Identify the Organism with Tube Feet**: The question asks about the occurrence of tube feet in certain organisms. Tube feet are specialized structures found in certain marine animals.

2. **Recognize the Phylum**: Tube feet are characteristic of the phylum Echinodermata. This phylum includes spiny-bodied animals such as starfish, sea urchins, and sea cucumbers.

3. **Understand the Function of Tube Feet**: Tube feet are part of a water vascular system, which is crucial for various functions including locomotion, feeding, respiration, and excretion. The water vascular system operates by moving water through a series of canals, allowing the tube feet to extend and contract.

4. **Identify the Dominant Organism**: In the context of the question, the most common example of an organism with tube feet is the starfish (also known as sea stars).

5. **Eliminate Other Options**: The other options provided (such as cockroaches, cuttlefish, and catfish) do not possess tube feet. Cockroaches have jointed appendages for locomotion, while cuttlefish and catfish have different adaptations.

6. **Conclude the Answer**: Based on the information gathered, the correct answer to the question is that tube feet occur in starfish, which belongs to the phylum Echinodermata.

**Final Answer**: Tube feet occur in starfish (Echinodermata).

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