[Campbell Biology P.656] What is the primary function of the contractile vacuoles in Paramec... | Practice Question

What is the primary function of the contractile vacuoles in Paramecium, as described in Figure 28.19?

  • A: Digesting food particles.
  • B: Expelling excess water.
  • C: Facilitating movement.
  • D: Storing genetic material.

Explanation

As stated in Figure 28.19 a , 'Bladderlike contractile vacuoles accumulate excess water from radial canals and periodically expel it through the plasma membrane,' indicating their primary role in water balance.