HOW DO CONTRACTILE VACUOLES MAINTAIN OSMOREGULATION??

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Q. Assertion :Amoeba contains a contractile vacuole. Reason: It helps in both digestion and osmoregulation.

Q. Osmoregulation is essential to all organisms as it maintains homeostasis of the organism's water content.
Osmoregulation in unicellular freshwater organisms like amoebas and paramecia involves an organelle called the contractile vacuole, which collects excess water as it accumulates in the cell and pumps it out. The graphs above plot contraction rate in contractile vacuoles vs. surrounding solution concentrations.
Which of the graphs correctly illustrates the results obtained when Paramoecium is placed in increasingly hypertonic solutions?

Read the following statements and identify the correct options given.

(A) Sap vacuoles - contain digestive enzymes by which nutrients are digested

(B) Contractile vacuoles - take part in osmoregulation and excretion

(D) Air vacuoles - store metabolic gases and help in buoyancy of cells

What is contractile vacuole?

And how is it different from normal vacuole

Q. Osmoregulation is essential to all organisms as it maintains homeostasis of the organism's water content.
Osmoregulation in unicellular freshwater organisms like amoeba and paramecia involves an organelle called the contractile vacuole, which collects excess water as it accumulates in the cell and pumps it out. The graphs below plot contraction rate in contractile vacuoles vs. surrounding solution concentrations.

Which of the following statements best explains the response when Paramecia are placed in a beaker of distilled water to which a 5% NaCl solution is added dropwise?

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