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Q.

Find out the correct statement.

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a

Viroid contains RNA (low molecular weight) and protein coat.

b

Viruses are obligatory parasites.

c

In lichens, the algal component is called phycobiont and fungal component is known as mycobiont, which are heterotrophic and autotrophic respectively. 

d

A virus consists of both RNA and DNA.

answer is D.

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Detailed Solution

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In lichens, algal component is autotrophic and fungal component is heterotrophic. Viriods contains only free RNA but not protein coat. A virus cannot both DNA and RNA as genetic material. It either contains DNA or RNA as genetic material. Viruses are obligate parasites.

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