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Gonads are endodermal in...

Gonads are endodermal in

A

Hydra

B

Obelia

C

Physalia

D

Aurelia.

Text Solution

AI Generated Solution

The correct Answer is:
**Step-by-Step Solution:** 1. **Understanding Gonads**: Gonads are the reproductive organs that produce gametes (sperm and eggs). In different organisms, the origin of gonads can vary, and they can be derived from different germ layers: ectoderm, mesoderm, or endoderm. 2. **Identifying the Organism**: The question specifically asks about which organism has endodermal gonads. One well-known example of an organism that has endodermal gonads is Aurelia, commonly known as the jellyfish. 3. **Location of Gonads in Aurelia**: In Aurelia, the gonads are located internally. They are situated in the gastric pouch, which is part of the organism's digestive system. 4. **Comparison with Other Organisms**: It is important to note that in other organisms such as Hydra, Obelia, and Physalia, the gonads are not endodermal; they are either ectodermal or mesodermal in nature. 5. **Conclusion**: Therefore, the correct answer to the question "Gonads are endodermal in" is Aurelia (jellyfish). **Final Answer**: Aurelia (jellyfish). ---
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