| 1. | A contractile vacuole, often quite large, is located in the posterior.
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| 2. | A contractile vacuole and anal aperture are in the posterior of the cell.
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| 3. | A : The contractile vacuole is full of water.
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| 4. | Immediately after the contractile vacuole ( CV ) expels water, its membrane crumples.
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| 5. | D : Contractile Vacuole gains water from cytoplasm.
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| 6. | The number of contractile vacuoles varies from one, to many, depending on species.
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| 7. | Acidocalcisomes have been implied to work alongside the contractile vacuole in responding to osmotic stress.
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| 8. | There are two to several contractile vacuoles.
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| 9. | Water is taken up by canals, and expelled by the contraction of contractile vacuole.
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| 10. | The contractile vacuole, as its name suggests, expels water out of the cell by contracting.
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