Biology

Q.

Transgenic plants are the ones

1. Grown in artificial medium after hybridization in the field

2. Generated by introducing foreign DNA into a cell and regenerating a plant from the cell

3. Produced by a somatic embryo in artificial medium

4. Produced after protoplast fusion in artificial medium

Q.

Which of the following is an advantage of transgenesis?

1. Study of diseases and gene therapy

2. Increased production of biological products

3. Vaccine safety testing

4. All of the these

Q.

Insect resistance transgenic cotton has been produced by inserting a piece of DNA from

1. A bacterium

2. A wild relative of cotton

3. A virus

4. An insect

Q.

A transgenic food crop which may help in solving the problem of night blindness in developing countries is

1. Flavrsavr tomatoes

2. Bt soybean

3. Starlink maize

4. Golden rice

Q.

Which of the following is not applicable for a biopatent?

1. Unearthing the DNA sequences

2. Using the existing technology to produce new products

3. Formation of new products

4. Discovery of cell lines

Q.

The plants of this group are adapted to live partly in water and partly above the substratum and free from water:

1. Xerophytes

2. Helophytes

3. Thallophytes

4. Hydrophytes

Q.

Animals undergo an inactive stage during the winter known as

1. Acclimatisation

2. Aestivation

3. Hibernation

4. Adaptation

Q.

The study of the relation of an organism with its environment is called

1. Autecology

2. Herpetology

3. Bionomics

4. Synecology

Q.

Broad-leaved oak forests are found in

1. Mediterranean evergreen forest

2. Tropical deciduous forest

3. Temperate deciduous forest

4. North coniferous forest

Q.

According to Allen's rule, mammals in cold regions have ____________ to conserve body heat.

1. Smaller extremities (legs, tails and ears)

2. Longer extremities

3. Smaller body mass

4. Larger body mass