Speciation of sympatric species is due to

(1) geographic isolation

(2) reproductive isolation

(3) isolation/separation

(4) migration

Flame cells and Malpighian tubules are the analogous organ in 

(1) insects and arthropods respectively 

(2) arthropods and echinodermates respectively

(3) helminths and arthropods with other insect respectively

(4) arthropds and other insect with helminths respectively

Tendrils in plants are an exapmle of 

(1) Convergent evolution

(2) Radiation

(3) Divergent evolution

(4) Co-evolution 

Basis of life are 

(1) nucleic acids

(2) proteins

(3) nucleoproteins

(4) amino acids

Theory of 'Saltations' was given by 

(1) G Mendel

(2) Hugo de Vries

(3) J B S Haldane

(4) H J Miller

The animal group which does not exist in Galapagos island is

(1) Insects

(2) Protozoa

(3) Crustacea

(4) Amphibia

Appearence of dark-coloured pepper moths among the light-coloured ones as a result of increased industrial pollution is an example of

1. Disruptive selection

2. Stabilizing selection

3. Directional selection

4. None of the above

Match the columns

Codes: 

           A   B   C

(1)       1   2   3 

(2)       2   3   1

(3)       3   1   2

(4)       3   2   1

Hardy-Weinberg's principle of 'zero evolution' is based on

(1) genetic equilibrium

(2) random mating

(3) no migrations

(4) All of the above

What does the term 'reproductive isolation' refers to?

(1) An individual is unable to fertilise itself 

(2) Genes are not exchanged between two populations

(3) Individuals from two populations never mate

(4) Individuals form two populations never produce offsprings