Which of the following associations is incorrect?

Options

A. Lateral line-fishes
B. Compound eye-arthropods
C. Camera type eye-squid
D. Statocysts-sea stars

Explanation

To determine which association is incorrect among the given options, we will analyze each one step by step.

### Step-by-Step Solution:

1. **Analyze Option A: Lateral lines in fishes**
- Lateral lines are sensory organs found in fishes that help them detect movement and vibrations in the water. This association is correct.

2. **Analyze Option B: Compound eyes in arthropods**
- Compound eyes are a type of eye found in many arthropods, including insects like cockroaches. This association is also correct.

3. **Analyze Option C: Camera type eye in squid**
- Squids possess a camera-type eye, which is similar in structure to the human eye and allows for excellent vision. This association is correct as well.

4. **Analyze Option D: Statocyst in sea stars**
- Statocysts are balance organs found in some invertebrates, primarily in the phylum Arthropoda. Sea stars, however, belong to the phylum Echinodermata and do not possess statocysts. Therefore, this association is incorrect.

### Conclusion:
The incorrect association is **Option D: Statocyst in sea stars**.

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