Which of the following sets do not have homologous organs? 

1.	Mouth parts of cockroach and butterfly
2.	Wings of butterfly and bird
3.	Wings of mosquito and butterfly
4.	Forelegs of horse and paddles of whale

Which of the following is the relatively most accurate method for dating fossils?

(1) Pottasium-argon method

(2) Uranium-lead method

(3) Electron-spin resonance method

(4) Radio-carbon method

At a particular locus, frequency of 'A' allele is 0.6 and that of 'a' is 0.4. What would be the frequency of heterozygotes in a randomly mating population of equilibrium ?

(1) 0.16

(2) 0.36

(3) 0.48

(4) 0.24

Speciation of sympatric species is due to

Flame cells and Malpighian tubules are the analogous organ in 

Tendrils in plants are an exapmle of 

1. Convergent evolution
2. Radiation
3. Divergent evolution
4. Co-evolution 

Basis of life are 

Theory of 'Saltations' was given by 

The animal group which does not exist in Galapagos island is

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