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Marine protozoans lack contractile vacuo...

Marine protozoans lack contractile vacuole because

A

Their body cannot accommodate it

B

They are hypoosmotic to their environment

C

They are isotonic with their environment

D

Osmoregulation is done by cell menbrane.

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • Contractile vacuoles help in

    A
    excretion
    B
    osmoregulation
    C
    osmoregulation and respiration
    D
    digestion

  • When a freshwater protozoan possessing a contractile vacuole is placed in a glass containing marine water, the vacuole will

    A
    increase in number
    B
    disappear
    C
    increase in size
    D
    decrease in size

  • Amoeba has a contractile vacuole for

    A
    osmoregulation
    B
    storage
    C
    turgidity
    D
    gaseous exchange

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