Distinguish between Virion and Viroid.

Distinguish Between

Sr. No.	Virion	Viroid
1.	Virion is a simple virus particle and can grow and multiply in living cells only	Viroid is a free pathogenic RNA of virus.
2.	They are the smallest infecting agents and can live on plants, animals, human beings and bacteria	They are found in plant cells and causes diseases only in plants.

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Chapter 22: World of Microbes - Exercise [Page 271]

Chapter 22 World of Microbes
Exercise | Q VIII. 1. | Page 271

Give a brief account of viruses with respect to their structure and nature of genetic material. Also name four common viral diseases.

Virus can grow and multiply outside host.

Mention any two viral diseases.

Match the following

Swine flu	Human Papilloma virus
Genital warts	Human Immunodeficiency Virus
AIDS	Mycobacterium
Tuberculosis	Influeuza virus H1N1

Define the following.

Bacteriophages

Viruses are non-cellular, ______ parasites.

Adenovirus is ______ virus.

Virions are the smallest among the infective agents.

Viruses are devoid of cellular organelles like ribosomes mitochondria, etc.

Influenza commonly occurs during adult age.