Question

Which of the following statement is true for growth in unicellular organisms like bacteria?

• A. They increase in size.
• B. They increase in mass.
• C. They increase in number.
• D. Both (a) and (b).

Answer 1

The correct option is C They increase in number.

Unicellular organisms like bacteria grow by cell division. Each cell division in bacteria results in the formation of a new individual. So growth in unicellular organisms leads to increase in their number.
Whereas in case of multicellular organism growth leads to an increase in size or mass of the organism.