Which among the following is a diploblastic organism?
Correct answer: A. Hydra
- A. Hydra
- B. Crabs
- C. Squid
- D. Earthworm
Explanation
Hydra is a diploblastic organism because it has two germ layers: ectoderm and endoderm. Ectoderm is the outer layer of cells, whereas, endoderm is the inner layer of cells. There is no middle layer, or mesoderm, in diploblastic organisms.
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