The organic remnants of the past life forms preserved on the sedimentary rocks in the earth is called fossils. They are the best and direct evidences of organic evolution. The age of fossils is calculated by radio-carbon dating and many other methods, which tells us about the era when the life form were alive. Fossils are of many types, like: Actual remains like the cryopreserved Woolly mammoth (of Siberia) or insects preserved in amber. Petrified plants and animals. Skeletal elements like bones, teeth, etc. of an animal. Moulds are the hardened encasements formed in the outer parts of organic remains which later decayed leaving cavities. Casts are hardened pieces of mineral matter deposited in the cavities of moulds.

Match the following Set-I Set-II (A) Cyanognathus (I) Reptiles & birds (B) Archaeopteryx (II) Amphibians & reptiles (C) Seymouria (III) Reptiles & mammals (D) Eusthenopteron (IV) Protochordates & fishes (V) Fishes & amphibians The correct match is

A = III , B = I , C = II , D = V

A = IV , B = I , C = II , D = V

A = III , B = II , C = I , D = V

A = V , B = II , C = I , D = IV

EASY

Earn 100

Which of the following evolved into the first amphibians?

50% studentsanswered this correctly

Important Questions on Evolution

MEDIUM

Biology>Genetics and Evolution>Evolution>A Brief Account of Evolution- Geological Time Scale

Match the following

	LIST-I		LIST-II
A	The golden age of reptiles	I	Carboniferous period
B	Age of amphibians	II	Cenozoic era
C	The golden age of fishes	III	Mesozoic era
D	Age of mammals	IV	Devonian period
		V	Silurian period

The correct match is

EASY

Biology>Genetics and Evolution>Evolution>A Brief Account of Evolution- Geological Time Scale

What is fossil?

MEDIUM

Biology>Genetics and Evolution>Evolution>A Brief Account of Evolution- Geological Time Scale

How the ages of fossils are calculated?

EASY

Biology>Genetics and Evolution>Evolution>A Brief Account of Evolution- Geological Time Scale

Of the periods listed below, which ONE is the earliest period when Ostracoderms, the jawless and finless fishes, appeared?

EASY

Biology>Genetics and Evolution>Evolution>A Brief Account of Evolution- Geological Time Scale

Anthropocene refers to the geological age during which

HARD

Biology>Genetics and Evolution>Evolution>A Brief Account of Evolution- Geological Time Scale

Study the following table

$S . No$ .	Group	Ancestors	Evolved in
$I$	Pisces	Osteolepids	Silurian period
$II$	Amphibia	Osteolepids	Devonian period
$III$	Reptilia	Labyrinthodonts	Jurassic period
$IV$	Aves	Therapsids	Carboniferous period
$V$	Mammalia	Therapsids	Triassic period

HARD

Biology>Genetics and Evolution>Evolution>A Brief Account of Evolution- Geological Time Scale

Match the following

	Set-I		Set-II
(A)	Cyanognathus	(I)	Reptiles & birds
(B)	Archaeopteryx	(II)	Amphibians & reptiles
(C)	Seymouria	(III)	Reptiles & mammals
(D)	Eusthenopteron	(IV)	Protochordates & fishes
		(V)	Fishes & amphibians