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Question
A terrestrial animal must be able to:
A terrestrial animal must be able to:
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Solution
The correct option is A Conserver water
Terrestrial animals have relatively less access to water than aquatic animals, therefore they have a need to conserve water during excretion.
The other options here are not pertaining to terrestrial animals. They are not likely to accumulate high amount of salts. So they do not need special mechanisms to excrete salt. Actively pumping salts through the skin and excreting large amounts of salts in urine are mechanisms that are useful for marine animals, which are likely to acquire large amounts of salts during hydration. And the last option also do not pertain to terrestrial animals because they cannot afford to excrete large amounts of water in their urine, because that can lead to dehydration.
Terrestrial animals have relatively less access to water than aquatic animals, therefore they have a need to conserve water during excretion.
The other options here are not pertaining to terrestrial animals. They are not likely to accumulate high amount of salts. So they do not need special mechanisms to excrete salt. Actively pumping salts through the skin and excreting large amounts of salts in urine are mechanisms that are useful for marine animals, which are likely to acquire large amounts of salts during hydration. And the last option also do not pertain to terrestrial animals because they cannot afford to excrete large amounts of water in their urine, because that can lead to dehydration.
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