Question

What is the difference between virus and viroid . And define viroid

Answer 1

 VIRUS
An infective agent that typically consists of a nucleic acid molecule in a protein coat,is too small to be seen by light microscopy,and is able to multiply only within the living cells of a host.
VIROID
An infectious entity affecting plants,smaller than virus and consisting only of nucleic acid without a protein coat.

Answer 2

Difference between virus and viroid

Explanation:

• Virus is helical in shape while viroid is spherical in shape.
• The nucleus of virus contain dsRNA,dsDNA, ssRNA,dsDNA while the viroid contain circular ssRNA.
• During replication, virus produces protein but viroid can't produce protein during replication.
• Heat can easily affects the virus while viroid is not affected by heat.
• Virus are of many types that affects different living organisms but viroid only affects the plants.
• Example of virus- EMV, Hepatitis, Influenza virus etc and example of viroids are potato spindle fiber viroid, apple scare viroid etc.