Which of the following microbes can be grown on nutritive media and form colonies?
a. Bacteria b. Fungi
c. Viruses d. Viroids

a, b and c

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a, b, c, and d

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c and d

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a and b

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Solution

The correct option is D a and b
Growth of bacteria and fungi :
Nutrient media contain macro and micronutrients that facilitate the growth of microbes like bacteria and fungi. The growth of these organisms can be visibly seen in the form of colonies formed in the culture plate containing the media.

Growth of viruses and viroids :
Viruses are obligate intracellular parasites and require living cell culture for propagation.
Viroids are self replicating circular RNA particles that also require live tissue culture to grow.

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