Q.

Which of the following groups of organisms reproduce faster?

A. Algae
B. Fungi
C. Bacteria
D. Protozoa
Answer» C. Bacteria
Explanation: Unlike in multicellular organisms, increases in cell size (cell growth and reproduction by cell division) are tightly linked in unicellular organisms. Bacteria grow to a fixed size and then reproduce through binary fission, a form of asexual reproduction. Under optimal conditions, bacteria can grow and divide extremely rapidly, and bacterial populations can double as quickly as every 9.8 minutes.
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Biology (GK)

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