AP BIOLOGY

BIOCHEMISTRY

PROPERTIES OF WATER

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Aquatic Plants and animals survive freezing temperatures because
A
Water can be found anywhere
B
Water is less dense as a solid
C
water is a polar molecule
D
Adhesion
Explanation: 

Detailed explanation-1: -The amount of dissolved oxygen in water decreases with rise in the water’s temperature. Cold water has more dissolved oxygen per unit area than warm water. This the reason why aquatic animals are more comfortable in cold water than warm water.

Detailed explanation-2: -Aquatic animals survive because of the dissolved oxygen in water.

Detailed explanation-3: -Underneath the frozen upper layer, the water remains in its liquid form and do not get the freeze. Oxygen is trapped beneath the layer of ice. As a result, fish and other aquatic animals find it possible to live comfortably in the frozen ponds. Was this answer helpful?

Detailed explanation-4: -After sufficient thickness of ice is formed it prevents further loss of heat from the bottom layers of water. This is why fishes and other aquatic animals and plants can survive in ponds and other water bodies even when the atmospheric temperature reaches or is well below 0 degrees.

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