Question

Match the following lists.

List-I	List-II
1. HIV	I. Host
2. Pilus	II. Prophage
3. Virus penetration	III. Retroviridae
4. Lysogeny	IV. Polyhedral virus

• A. 1- i, 2- ii, 3- iii, 4- iv
• B. 1- i, 2- iv, 3- iii, 4- ii
• C. 1- iv, 2- iii, 3- ii, 4- i
• D. 1- iii, 2- iv, 3- i, 4- ii

Answer 1

Answer: (D)

1- iii, 2- iv, 3- i, 4- ii

1. HIV (Human Immunodeficiency Virus) is a retrovirus belonging to family retroviridae and causes AIDS (Acquired Immunodeficiency Syndrome) in humans.

2. Pili (singular pilus) are the structures present in some viruses like a polyhedral virus which are meant for attachment to the host.

3. Virus attaches itself to the host and penetrates to inject its genetic material inside the host body.

4. In lysogeny, the viral DNA gets integrated into the host's DNA and replicates along with the host's DNA. When the genetic material of such phages is inserted into the genome of the host cells, it is said to be in prophage state.

Hence, the correct match is 1- iii, 2- iv, 3- i, 4- ii