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NEET UG BIOLOGY MCQ: BIOLOGICAL CLASSIFICATION
1
Medium
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Analyzing
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Two species of Amoeba X and Y were kept in fresh water
and got adapted. Species X developed contractile vacuole.
When both were transferred to sea water and got adapted,
both X and Y lost their contractile vacuole. From these
observation we conclude that
and got adapted. Species X developed contractile vacuole.
When both were transferred to sea water and got adapted,
both X and Y lost their contractile vacuole. From these
observation we conclude that
View answer and explanation
Correct option: A
Both X and Y are marine species
Option D is correct because the loss of contractile vacuoles in both species upon transfer to seawater indicates that they are both freshwater species that use the vacuoles to osmoregulate in a hypotonic environment.
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