The solar system is estimated to be _______________years old.

(a)

4.5 billion years

(b)

4 billion years

(c)

4.5 trillion years

(d)

6.4 billion years

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

The term biogenesis was coined by

(a)

Thomas Huxley

(b)

Henry Bastian

(c)

Haldane

(d)

Weinberg

_____________ was not a part of theory of chemical evolution.

(a)

Sea served as chemical laboratory

(b)

Oxygen was not present

(c)

Physical forces such as UV, lightning contributed to changes.

(d)

Solar energy was not available

Origin of fishes occurred in ___________ period

(a)

Devonian

(b)

Silurian

(c)

Cambrian

(d)

Permian

___________  is called age of fishes

(a)

Silurian

(b)

Ordovician

(c)

Devonian

(d)

Cambrian

_____________ is called age of Invertebrates

(a)

Cambrian

(b)

Devonian

(c)

Pennsylvanian

(d)

Mississippian

____________ era is called Golden age of reptiles.

(a)

Paleozoic

(b)

Mesozoic

(c)

Precambrian

(d)

Cenozoic

Origin of egg laying mammal a occurred in ___________ period.

(a)

Jurassic

(b)

Carboniferous

(c)

Triassic

(d)

Cretaceous

Human evolution occured in _____________ era

(a)

Paleozoic

(b)

Cenozoic

(c)

Mesozoic

(d)

Precambrian

_________________ era is called age of mammals

(a)

Precambrian

(b)

Permian

(c)

Cenozoic

(d)

Paleozoic

Choose the correct sequence

(a)

Ordovician, Triassic, Permian, Cretaceous

(b)

Devonian, Permian, Cretaceous, Cambrian

(c)

Devonian, Triassic, Cretaceous, Ordovician

(d)

Silurian, Devonian, Permian, Triassic

Emergence of modern birds occurred in _____________ period.

(a)

Devonian

(b)

Silurian

(c)

Jurassic

(d)

Cretaceous

Origin of first man like apes occured in ______________ epoch

(a)

Oligocene

(b)

Miocene

(c)

Pliocene

(d)

Paleocene

________________ are not examples of homologous organs.

(a)

Thorn and tendrils

(b)

Forelimb of animals and wing of bat

(c)

wing of bat and bird

(d)

Flippers of penguins and dolphins