Theory of natural selection dwells on 

1. role of environment in evolution

2. natural selection acting on favourable variations

3. changes in gene complex resulting in heritable variations

4. None of the above

Which one of the following options gives one correct example each of convergent evolution and divergent evolution?

Parallelism is 

1. adaptive divergence

2. adaptive divergence of widely separated species

3. adaptive convergence of widely different species

4. adaptive convergence of closely related groups

The concept of chemical evolution is based on 

1. crystallization of chemicals

2. interaction of water, air, and clay under intense heat

3. effect of solar radiation on chemicals

4. the possible origin of life by the combination of chemicals under suitable environmental conditions

One of the important consequences of geographical isolation is 

1. no change in the isolated fauna

2. preventing speciation

3. speciation through reproductive isolation

4. random creation of new species

Which one of the following describes correctly the homologous structures?

1. Organs appearing only in embryonic stage and disappearing later in the adult

2. Organs with anatomical similarities, but performing different functions

3. Organs with anatomical dissimilarities, but performing same functions

4. Organs that have no function now, but had an important function in ancestors

'Continuity of germplasm' theory was given by 

1. De Vries 

2. Weismann

3. Darwin

4. Lamarck

Which one of the following amino acid was not found to be synthesised in Miller's experiment? 

1. Aspartic acid

2. Glutamic acid

3. Alanine

4. Glycine

Two geographical regions separated by high mountains are 

1. Oriental and Austrailian

2. Palaearctic and Oriental

3. Nearctic and Palaearctic

4. Neotropical and Ethiopian

Correct order is [1991]
1. Palaeozoic $\stackrel{ }{\to }$ Archaeozoic $\stackrel{ }{\to }$Coenozoic
2. Archaeozoic $\stackrel{ }{\to }$ Palaeozoic $\stackrel{ }{\to }$ Proterozoic
3. Palaeozoic $\stackrel{ }{\to }$Mesozoic $\stackrel{ }{\to }$ Coenozoic
4. Mesozoic $\stackrel{ }{\to }$Archaeozoic $\stackrel{ }{\to }$ Proterozoic