__________ zone in marine ecosystem, is dark and cold throughout the year, which makes animals evolve some unique features. The fishes have special structures that produce light on their bellies, around their eyes and at the sides of their bodies, some of them also glow in the darkness of deep waters.

Euphotic

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Limnetic

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Abyssal

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Bathyal

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Solution

The correct option is C Abyssal
Abyssal zone in marine ecosystem, is dark and cold throughout the year, which makes animals evolve some unique features. The fishes have special structures that produce light on their bellies, around their eyes and at the sides of their bodies, some of them also glow in the darkness of deep waters.

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2. Soft bodied

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5. A very unique property of these animals is bioluminescence

Question 34
Animals in cold regions and fish in cold water have a thicker layer of subcutaneous fat under their skin. Justify.

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