Question

during branchial respiration :

A) fish keeps its mouth open and lowers the floor of the oral cavity
B) fish keeps its mouth closed and lowers the floor of the oral cavity
C) fish keeps its mouth open and raises the floor of the oral cavity
D) fish keeps its mouth closed and raises the floor of the oral cavity



WHO WILL ANSWER CORRECTLY I WILL MARK THEM AS BRANILIEST ​

Answer 1

Answer:

fish keeps its mouth open and rais the floor of the oral cavity

Explanation:

i have observed it and also it's a fact.

Answer 2

The correct answer will be A) Fish keeps its mouth open and lowers the floor of the oral cavity during branchial respiration.

• While undergoing the process of respiration, fishes open their mouth and lower the floor of their respective oral cavities.
• By doing so, the water gets rushed into the cavity of the fish's mouth and this causes the oral cavity to expand more.
• Once the buccal cavity expands, the fishes close their mouths and the water goes through the gills and the exchange of gases take place there.

Hence, the correct option to be chosen will be A) Fish keeps its mouth open and lowers the floor of the oral cavity during branchial respiration.

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