How do marine animals survive in water without air contact?

[amp_mcq option1=”They do not require any oxygen” option2=”They take oxygen from water” option3=”They only produce oxygen in their body” option4=”They get oxygen from water plants” correct=”option2″]

This question was previously asked in

UPSC CAPF – 2012

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The correct answer is B) They take oxygen from water.

Marine animals, like most living organisms, require oxygen for respiration. They do not obtain it directly from the air like terrestrial animals do. Instead, they extract dissolved oxygen from the water using specialized respiratory organs, such as gills.

Option A is incorrect because marine animals do require oxygen. Option C is incorrect as they obtain oxygen from their environment, not solely produce it. Option D is partially correct in that water plants contribute to dissolved oxygen, but the animals directly take the oxygen dissolved *in* the water, regardless of its source (atmosphere or photosynthesis).

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