A) Vacuoles do not help in maintaining rigidity of cell
B) Vacuoles form thread-like tail in sperms of many mammals
C) Vacuoles expell excess water and waste products from the cell
D) Vacuoles store only excretory products of a cell
Correct Answer: C
Solution :
[c] In unicellular organisms, vacuoles carry out the role of expelling excess water (osmoregulation) and wastes from the cell (excretion). They also store food and water in cell and help in maintaining rigidity of cell by controlling osmosis.
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