From his experiments, S.L. Miller produced amino acids by mixing which of the following in a closed flask:

1. ${\mathrm{CH}}_3,$ ${\mathrm{H}}_2,$ ${\mathrm{NH}}_4$ $\mathrm{and}$ $\mathrm{water}$ $\mathrm{vapour}$ $\mathrm{at}$ $800°\mathrm{C}$

2. ${\mathrm{CH}}_4,$ ${\mathrm{H}}_2,$ ${\mathrm{NH}}_3$ $\mathrm{and}$ $\mathrm{water}$ $\mathrm{vapour}$ $\mathrm{at}$ $600°\mathrm{C}$

3. ${\mathrm{CH}}_3,$ ${\mathrm{H}}_2,$ ${\mathrm{NH}}_3$ $\mathrm{and}$ $\mathrm{water}$ $\mathrm{vapour}$ $\mathrm{at}$ $600°\mathrm{C}$

4. ${\mathrm{CH}}_4,$ ${\mathrm{H}}_2,$ ${\mathrm{NH}}_3$ $\mathrm{and}$ $\mathrm{water}$ $\mathrm{vapour}$ $\mathrm{at}$ $800°\mathrm{C}$

Flippers of Penguins and Dolphins are examples of:

Which of the following refers to correct example(s) of organisms that have evolved due to changes in environment brought about by anthropogenic action?

1. (a) and (c)

2. (b), (c) and (d)

3. only (d) 

4. only (a) 

The sum total of all the alleles in a population constitute the

(1) chromosome complement

(2) karyotype

(3) gene pool

(4) allele group

Good examples of recapitulation theory is

(1) The embryonic membrane of reptiles

(2) Tadpole larva of frog

(3) Placenta of mammals

(4) Canine teeth of the dog

Embryological support for evolution was proposed by:

After about how many years of the formation of the earth, life appeared on this planet?

1. 500 billion years

2. 50 million years

3. 500 million years

4. 50 billion years

The phenomenon of the evolution of different species in a given geographical area starting from a point and spreading to other habitats is called:

A Hominid fossil discovered in Java in 1891, now extinct, having a cranial capacity of about 900 cc was:

Which of the following statements is correct about the origin and evolution of men?