CBSE Class 12 Biology Evolution Worksheet Set A

Read and download free pdf of CBSE Class 12 Biology Evolution Worksheet Set A. Students and teachers of Class 12 Biology can get free printable Worksheets for Class 12 Biology in PDF format prepared as per the latest syllabus and examination pattern in your schools. Standard 12 students should practice questions and answers given here for Biology in Grade 12 which will help them to improve your knowledge of all important chapters and its topics. Students should also download free pdf of Class 12 Biology Worksheets prepared by school teachers as per the latest NCERT, CBSE, KVS books and syllabus issued this academic year and solve important problems provided here with solutions on daily basis to get more score in school exams and tests

Evolution MCQ Questions with Answers Class 12 Biology

Question : Which of the following had huge fearsome dagger like teeth?

(1) Dryopithecus

(2) Tyrannosaurus

(3) Ichthyosaur

(4) Homo erectus
Answer (2)


Question : Hardy-Weinberg equilibrium is not affected by which of the following factors?

(1) Random mating

(2) Genetic recombination during gametogenesis

(3) Natural selection

(4) Variations due to mutation
Answer (1)


Question :The Darwinian variations are

(1) Small and directionless

(2) Random and directional

(3) Small and directional

(4) Random and directionless
Answer (3)


Question : The homologous organs are

(1) Wings of pigeon and housefly

(2) Wings of housefly and bat

(3) Wings of pigeon and forelimbs of man

(4) Wings of butterfly, bat and housefly
Answer (3)


Question : The fish-like giant reptile which existed 200 mya was

(1) Pteranodon

(2) Ichthyosaur

(3) Triceratops

(4) Tyrannosaurus
Answer (2)


Question : The first organisms that invaded land were

(1) Plants

(2) Fishes

(3) Insects

(4) Bacteria
Answer (1)


Question : Organs which have similar origin and developmental plan, but different functions are called

(1) Vestigial organs

(2) Analogous organs

(3) Homologous organs

(4) Physiological organs

Answer (3)


Question : Australopithecines probably lived in the

(1) East African grasslands

(2) West African grasslands

(3) North American grasslands

(4) South American grasslands
Answer (1)


Question : Which among the following are called the Darwin’s finches?

(1) Archaeopteryx

(2) Pteranodon

(3) Pavo cristatus

(4) Small black birds
Answer (4)


Question :  Which of the following evolved into the first amphibians?

(1) Lobefins

(2) Shrews

(3) Salamanders

(4) Turtles
Answer (1)


Question : The wrongly matched pair w.r.t. the organisms and their probable time of evolution is

(1) Jawless fish – around 350 mya

(2) Lobefins – around 350 mya

(3) Fish-like giant reptiles – around 320 mya

(4) Sea weeds – around 320 mya
Answer (3)


Question :  Find the odd one out

(1) Trunk of an elephant and hand of a chimpanzee

(2) Ginger and sweet potato

(3) Wings of bat and insect

(4) Nails of human beings and claws of a cat
Answer (4)


Question : Seed ferns originated in

(1) Carboniferous period

(2) Devonian period

(3) Silurian period

(4) Cretaceous period
Answer (1)


Question : The convergent evolution of two species is usually associated with

(1) A recent common ancestor

(2) Analogous organ

(3) Homologous organ

(4) Different habitat
Answer (2)


Question : Which one of the following are analogous structures? 

(1) Wings of Bat and Wings of Pigeon

(2) Gills of Prawn and Lungs of Man

(3) Thorns of Bougainvillea and Tendrils of Cucurbita

(4) Flippers of Dolphin and Legs of Horse
Answer (2)


Question : The chronological order of human evolution from early to the recent is 

(1) Australopithecus → Ramapithecus → Homo habilis → Homo erectus

(2) Ramapithecus →Australopithecus → Homo habilis → Homo erectus

(3) Ramapithecus → Homo habilis → Australopithecus → Homo erectus

(4) Australopithecus → Homo habilis → Ramapithecus → Homo erectus
Answer (2)


Question : A molecule that can act as a genetic material must fulfill the traits given below, except

(1) It should be able to express itself in the form of 'Mendelian characters'

(2) It should be able to generate its replica

(3) It should be unstable structurally and chemically

(4) It should provide the scope for slow changes that are required for evolution
Answer (3)


Question :  The process by which organisms with different evolutionary history evolve similar phenotypic adaptations in response to a common environmental challenge, is called [NEET-2013]

(1) Convergent evolution

(2) Non-random evolution

(3) Adaptive radiation

(4) Natural selection
Answer (1)


Question : Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as 

(1) Genetic drift

(2) Random mating

(3) Genetic load

(4) Genetic flow
Answer (1)


Question : Which of the following structures is homologus to the wing of a bird? 

(1) Flipper of Whale

(2) Dorsal fin of a Shark

(3) Wing of a Moth

(4) Hind limb of Rabbit
Answer (1)


Question : Following are the two statements regarding the origin of life 

(a) The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
(b) The first autotrophic organisms were the chemoautotrophs that never released oxygen.On the above statements which one of the following options is correct?

(1) Both (a) & (b) are false

(2) (a) is correct but (b) is false

(3) (b) is correct but (a) is false

(4) Both (a) & (b) are correct
Answer (4)

Question :  Which is the most common mechanism of genetic variation in the population of a sexually-reproducing organism? 

(1) Recombination

(2) Transduction

(3) Chromosomal aberrations

(4) Genetic drift
Answer (1)


Question :  A population will not exist in Hardy-Weinberg equilibrium if 

(1) The population is large

(2) Individuals mate selectively

(3) There are no mutations

(4) There is no migration
Answer (2)


Question : Forelimbs of cat, lizard used in walking; forelimbs of whale used in swimming and forelimbs of bats used in flying are an example of 

(1) Analogous organs

(2) Adaptive radiation

(3) Homologous organs

(4) Convergent evolution
Answer (3)


Question : Analogous structures are a result of 

(1) Stabilizing selection

(2) Divergent evolution

(3) Convergent evolution

(4) Shared ancestry
Answer (3)


Question : The eye of octopus and eye of cat show different patterns of structure, yet they perform similar function. This is an example of 

(1) Homologous organs that have evolved due to divergent evolution

(2) Analogous organs that have evolved due to convergent evolution

(3) Analogous organs that have evolved due to divergent evolution

(4) Homologous organs that have evolved due to convergent evolution
Answer (2)


Question : The wings of a bird and the wings of an insect are: 

(1) Homologous structures and represent convergent evolution

(2) Homologous structures and represent divergent evolution

(3) Analogous structures and represent convergent evolution

(4) Phylogenetic structures and represent divergent evolution.
Answer (3)


Question : Genetic drift operates in 

(1) Small isolated population

(2) Large isolated population

(3) Non-reproductive population

(4) Slow reproductive population
Answer (1)


Question : Which of the following had the smallest brain capacity?

(1) Homo habilis

(2) Homo erectus

(3) Homo sapiens

(4) Homo neanderthalensis
Answer (1)


Question :  The tendency of population to remain in genetic equilibrium may be disturbed by 

(1) Lack of migration

(2) Lack of mutations

(3) Lack of random mating

(4) Random mating
Answer (3)


Question : In Hardy-Weinberg equation, the frequency of heterozygous individual is represented by
(1) p2

(2) 2pq

(3) pq

(4) q2
Answer (2)


Question : According to Darwin, the organic evolution is due to 

(1) Interspecific competition

(2) Competition within closely related species

(3) Reduced feeding efficiency in one species due to the presence of interfering species

(4) Intraspecific competition
Answer (1)


Question : Industrial melanism is an example of 

(1) Neo Lamarckism

(2) Neo Darwinism

(3) Natural selection

(4) Mutation
Answer (3)


ONE MARK QUESTIONS

1.What causes speciation according to Hugo de Vries?

2.Mention the type of evolution that has brought the similarity as seen in potato tuber and sweet potato.

TWO MARK QUESTION

3.How do Darwin’s finches illustrate adaptive radiation?

4.How is Darwin’s concept of evolution different from de Vries?

5.What is divergent evolution? Explain taking an example of plants.

6.Why are the wings of butterfly and birds said to be analogous organs? Name the type of evolution of which the analogous organs are a result of.


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