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

Natural selection is best defined as occurring when the environment causes :
1. differential success in reproduction

2. differential mortality

3. assortative mating

4. a reduced gene pool

Which one of the following populations would most quickly lead to two groups with few shared traits?
1. a population with disruptive selection
2. a population with directional selection
3. a population with stabilizing selection
4. a population with no selection

Which one of the following would cause the Hardy-Weinberg principle to be inaccurate?
1. The size of the population is very large.
2. Individuals mate with one another at random.
3. Natural selection is present.
4. There is no source of new copies of alleles from outside the population.

Among the following sets of examples for
divergent evolution, select the incorrect
option.
1. Brain of bat, man and cheetah
2. Heart of bat, man and cheetah
3. Forelimbs of man, bat and cheetah
4. Eyes of Octopus, bat and man

The best description of natural selection is
1. the survival of the fittest
2. the struggle for existence
3. the reproductive success of the members of a
population best adapted to the environment
4. a change in the proportion of variations within
a population

Single step large mutation leading to
speciation is also called
1. Founder’s effect
2. saltation
3. branching descent
4. natural selection

The chronological order of human evolution
from early to the recent is
1. Australopithecus $\to$ Ramapithecus $\to$ Homo
habilis $\to$ Homo erectus
2. Ramapithecus $\to$ Australopithecus $\to$ Homo
habilis $\to$ Homo erectus
3. Ramapithecus $\to$ Homo habilis
$\to$ Australopithecus $\to$ Homo erectus
4. Australopithecus $\to$ Homo habilis
$\to$ Ramapithecus $\to$ Homo erectus

Which of the following is not an example of analogous structure ?

1. Eye of Octopus and mammal

2. Flippers of penguins and dolphin

3. Sweet potato and potato 

4. Mouth parts of cockroach and mosquito