Which of the following structures is homologous to the wing of a bird? 
1. Dorsal fin of a shark
2. Wing of a moth
3. Hind limb of Rabbit
4. Flipper of whale 

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

Evolutionary history of an organism is known as
1. Phylogeny
2. Ancestry
3. Paleontology
4. Ontogeny

Persons with sickle cell trait are resistant to severe malaria. This shows:
1. heterozygote advantage
2. heterosis
3. punctuated equilibrium
4. reverse evolution

Evolution of life shows that life forms had a trend of moving from:

1. land to water

2. dryland to wet land

3. fresh water to sea water

4. water to land