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inna [77]
3 years ago
6

During the early stages of embryo development, dolphins have gill pouches. What does this mean?

Biology
1 answer:
olga2289 [7]3 years ago
6 0
<h2>Answer:</h2>

This means the dolphin is an vertebrate.

<h3>Explanation:</h3>
  • Gill pouches are the structures which are present in all vertebrates in the embryonic stages while it is present in fishes and amphibian in later life also.
  • It is thought to be the ancestral structures present in vertebrates. These pouches are then converted to lungs in the later life. For the water animals they are used for respiration.
  • They are actually the muscular walls containing respiratory lamellae on its inner side.
  • Hence in dolphin they are signs that dolphin is an vertebrate.
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