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Statocysts are sense organs of (a) Para...

Statocysts are sense organs of
(a) Paramecium
(b) Ascaris
(c) Medusa of Obelia
(d) Taenia solium.

A

Paramecium

B

Ascaris

C

Medusa of Obelia

D

Taenia solium.

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding which organism has statocysts as sense organs, we can follow these steps: ### Step-by-Step Solution: 1. **Understand what statocysts are**: Statocysts are specialized sensory organs that help in balance and orientation. They are typically small, circular, closed vesicles filled with granules and lined with sensory cells. 2. **Analyze the options**: - **(a) Paramecium**: This is a unicellular organism that does not possess statocysts. Instead, it has other structures for sensing its environment. - **(b) Ascaris**: This is a parasitic roundworm and does not have statocysts as sensory organs. - **(c) Medusa of Obelia**: Obelia is a colonial organism in the phylum Cnidaria, and its medusa stage does possess statocysts, which help in balance and orientation. - **(d) Taenia solium**: This is a parasitic flatworm (tapeworm) and does not have statocysts. 3. **Identify the correct answer**: Based on the analysis, the only organism that has statocysts as sense organs is the **medusa stage of Obelia**. 4. **Conclusion**: Therefore, the correct answer is **(c) Medusa of Obelia**. ### Final Answer: (c) Medusa of Obelia
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