Question

The smallest self-replicating particles are
(a) Infectious RNA particles
(b) Obligate parasites
(c) Known to cause diseases in plants, animals and fungi
(d) Devoid of protein coats
The correct option is _________

• A. a, b, c
• B. b, c, d
• C. All except c
• D. a and c only

Answer 1

Answer: (C)

All except c

The smallest self-replicating particles are called Viroids.

a) These are infectious RNA particles

b) These are an obligate parasite, that is, capable of surviving in the host cell only.

c) These are known to cause infectious diseases only in plants.

d) These are not covered by any protein coat.

So, the correct answer is 'All except c'