Question

what is difference between virus and viroidsand which is small among them ​

Answer 1

Viruses can infect plants and animals, viroids are only known to infect plants. ... A Viroid is formed only of a single stranded circular RNA molecule that is much smaller and simpler than a virus. Viroidsare naked RNA with no protein or lipid coat. Unlike viral genomes viroid genomes do not encode for any proteins.

Answer 2

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Virus :-- It is small infectious agent that replicates only inside the body of other organism. It is and obligate intracellular parasite which can reproduce by invading and taking over other cells as they lack cellular machinery for reproduction.

Viroids :-- These are the smallest infectious pathogen known. These are spread by plant propagation who said and by manual mishandling with contaminated implements.

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