Question

Go through the following statements I. Viruses are more closely related to chemical matter than to a living organism. II. Viruses and
bacteria are the only infectious agents found in plants and animals. III. All viruses are obligate parasites of cells, the majority do not
cause disease. IV. Viruses cannot be observed using a light microscope Which one is correct option?
OA) I and II are correct
OB) II and III are correct
Oc) II and IV are correct
OD) I, III and IV are correct​

Answer 1

Answer:

option d is the correct answer

OD) I, III and IV are correct

Answer 2

Answer:

The correct option is (D). Statements I, III, and IV describe the characteristics of a virus.

Explanation:

• Much smaller than a prokaryotic cell, virus is a microscopic particle. Since viruses aren't made up of cells, they also don't have cell organelles like ribosomes, cytoplasm, or membranes.
• They are unable to synthesize proteins or even reproduce independently . Instead, they must rely on a host cell to help them create new copies of themselves and synthesis their proteins.
• Viruses are not considered to be living organisms.
• Plants and animals are not infected just by viruses and bacteria, but other microorganisms such as fungi are also responsible for causing diseases in plants and animals.
• Viruses are very small in size and can not be seen by either naked eyes or light microscope. It can be seen by using electron microscope.

Hence, option (D) is correct.

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