Which one of the following pair of items correctly belongs to the category of organs mentioned against it?

1.  Thorn of Bougainvillea and tendrils of Cucurbita – Analogous organs

2.  Nictitating membrane and blind spot in human eye – vestigial organs

3.  Nephridia of earthworm and Malpighian tubules of cockroach - Excretory organs

4.  Wings of honey bee and wings of crow - Homologous organs

The finches of Galapagos islands provide an evidence in favour of:

1. special creation

2. evolution due to mutation

3. retrogressive evolution

4. biogeographical evolution

Which one of the following is not a living fossil?

1. King crab

2. Sphenodon

3. Archaeopteryx

4. Peripatus

Variations caused by mutation, as proposed by Hugo de Vries, are:

1. small and directionless

2. random and directional

3. random and directionless

4. small and directional

A gene locus has two alleles A, a. If the frequency of dominant allele A is 0.4, then what will be the frequency of homozygous dominant, heterozygous and homozygous recessive individuals in the population?

1.  0.16 (AA); 0.36 (Aa); 0.48 (aa)

2.  0.36 (AA); 0.48 (Aa); 0.16 (aa)

3.  0.16 (AA); 0.24 (Aa); 0.36 (aa)

4.  0.16 (AA); 0.48 (Aa); 0.36 (aa)

In a species, the weight of a newborn ranges from 2 to 5 kg. 97% of the newborns with an average weight between 3 to 3.3 kg survive whereas 99% of the infants born with weights from 2 to 2.5 kg or 4.5 kg to 5 kg die. Which type of selection process is taking place?

1. Cyclical selection

2. Directional selection

3. Stabilizing selection

4. Disruptive selection

Match the hominids with their correct brain size:

Select the correct option.

For the stability of the organic compounds, Oparin opined that probably:
1. UV radiation never reached the surface of the primeval Earth

2. the primitive Earth was in a molten state

3. the primitive Earth atmosphere was reducing rather than oxidizing

4. plenty of energy sources were available for chemical reactions to occur

Both Charles Darwin and A.R.Wallace were influenced by the:
1. writings of J.B.S.Haldane on the origin of life
2. findings of Urey and Miller experiments
3. findings on the Galapagos Islands
4. essay on human population by T.R.Malthus

Which of the following pairs of organs do not represent analogous organs?
1. Eye of an octopus and eye of a mammal
2. Flippers of penguin and flippers of dolphin
3. Wings of bat and forelimbs of humans
4. Wings of birds and wings of butterfly