Viruses have:
1. DNA enclosed in a protein coat
2. Prokaryotic nucleus
3. Single chromosome
4. Both DNA and RNA

The first human hormone produced by recombinant DNA technology is:

1. Insulin

2. Estrogen

3. Thyroxin

4. Progesterone

An analysis of chromosomal DNA using the Southern hybridization technique does not use:

1. Electrophoresis

2. Blotting

3. Autoradiography

4. PCR

In vitro clonal propagation in plants is characterized by:

1. PCR and RAPD

2. Northern blotting

3. Electrophoresis and HPLC

4. Microscopy

An alga which can be employed as food for human beings:

1. Ulothrix

2. Chlorella

3. Spirogyra

4. Polysiphonia

Which vector can clone only a small fragment of DNA?

1. Bacterial artificial chromosome

2. Yeast artificial chromosome

3. Plasmid

4. Cosmid

An example of ex-situ conservation is:

1. National park 

2. Seed bank

3. Wildlife sanctuary

4. Sacred grove

A location with luxuriant growth of lichens on the trees indicates that the:

1. Trees are very healthy

2. Trees are heavily infested

3. Location is highly polluted

4. Location is not polluted

Match the following and select the correct option: 

1. A-(i), B-(ii), C-(iii), D-(iv)

2. A-(i), B-(ii), C-(iii), D-(iv)

3. A-(iii), B-(ii), C-(iv), D-(i)

4. A-(ii), B-(i), C-(iv), D-(iii)

A species facing extremely high risk of extinction in the immediate future is called:

1. Vulnerable

2. Endemic

3. Critically Endangered

4. Extinct