Sharks and dolphins both have the ability to breath, however, the structures involved are quite different. Sharks breath through their gills and dolphins breath through their blow holes. What terms/phrase best describes this?

EVIDENCE FOR EVOLUTION

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	they are analogous structures
B	they are homologous structures
C	they are incomplete structures
D	they are homologous anomalys.

Explanation:

Detailed explanation-1: -Whales and dolphins are mammals and breathe air into their lungs, just like we do. They cannot breathe underwater like fish can as they do not have gills. They breathe through nostrils, called a blowhole, located right on top of their heads.

Detailed explanation-2: -Dolphins are mammals, not fish. Unlike fish, who breathe through gills, dolphins breathe air using lungs.

Detailed explanation-3: -Sharks have gills on the side of their body while dolphins have a blowhole on the top of their head.

Detailed explanation-4: -Dolphins do not breathe through their mouths in the same way as people can, they only breathe through their blowholes. In this way, breathing and eating are kept entirely separate in dolphins so that they can capture prey in their mouths and swallow it without the risk water getting into their lungs.

Detailed explanation-5: -They have a blow hole at the top of their heads that they use to breath through. When dolphins are underwater, they don’t hold their breath. The oxygen they need to stay underwater for long periods of time is stored in their blood and muscle.

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