Living organisms can be unexceptionally distinguished from non-living things on the basis of their ability for:

Compared to a bull, a bullock is docile because of:

1. higher levels of thyroxin

2. higher levels of cortisone

3. lower levels of blood testosterone

4. lower levels of adrenalin/noradrenalin in its blood

What is common to whales, seals, and sharks?

1. Seasonal migration

2. Thick subcutaneous fat

3. Convergent evolution

4. Homeothermy

All enzymes of the TCA cycle are located in the mitochondrial matrix except one which is located in inner mitochondrial membranes in eukaryotes and in the cytosol in prokaryotes. This enzyme is:

Which one of the following pairs of structures distinguishes a nerve cell from other types of cells?

1. Perikaryon and dendrites

2. Vacuoles and fibres

3. Flagellum and medullary sheath

4. Nucleus and mitochondria

Ultrasound of how much frequency is beamed into a human body for sonography?

1. 30-40 MHz

2. 15-30 MHz

3. 1-15 MHz

4. 45-70 MHz

The biological organisation starts with:

1. Submicroscopic molecular level

2. Cellular level

3. Organisms level

4. Atomic level

Which one of the following pairs is wrongly matched?

1. Methanogens - Gobar gas

2. Yeast - Ethanol

3. Streptomycetes - Antibiotic

4. Coliforms - Vinegar

In pea plants, yellow seeds are dominant to green. If a heterozygous yellow-seeded plant is crossed with a green-seeded plant, what ratio of yellow and green-seeded plants would you expect in F1generation?

1. 50:50

2. 9:1

3. 1:3

4. 3:1

Adaptive radiation refers to: