Carbon dioxide in the primitive earth is said to have been formed from ___________

(a)

Methane & Oxygen

(b)

Methane & Ammonia

(c)

Carbon and Oxygen

(d)

Carbon & Methane

Human evolution occured in _____________ era

(a)

Paleozoic

(b)

Cenozoic

(c)

Mesozoic

(d)

Precambrian

Founder's effect is related to

(a)

Genetic drift

(b)

Gene mutation

(c)

Extinction

(d)

Artificial selection

According to big bang theory, the primitive earth had all the following. Except:

(a)

Ammonia

(b)

Methane

(c)

Oxygen

(d)

Hydrogen and water vapour

All the following are vestigial organs in human. Except:

(a)

Coccyx

(b)

Law muscles

(c)

Tail in human boy

(d)

Nictitating membrane of the eye