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 [AFMC 1983, AIIMS 1983]

Question

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                      [AFMC 1983, AIIMS 1983]

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Both X and Y are fresh water

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Both X and Y are marine species

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Species Y is marine and X is fresh water

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Species X is marine and Y is fresh water

1.	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 [AFMC 1983, AIIMS 1983]
A.	Both X and Y are marine species
B.	Species Y is marine and X is fresh water
C.	Species X is marine and Y is fresh water
D.	Both X and Y are fresh water
Answer» D. Both X and Y are fresh water

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 [AFMC 1983, AIIMS 1983]

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