Students are advised to practice the NCERT MCQ Questions for Class 12 Biology Chapter 7 Evolution with Answers Pdf free download is available here. MCQ Questions for Class 12 Biology with Answers are prepared as per the Latest Exam Pattern. Students can solve these Evolution Class 12 MCQs Questions with Answers and assess their preparation level.
Evolution Class 12 MCQs Questions with Answers
Solving the Evolution Multiple Choice Questions of Class 12 Biology Chapter 7 MCQ can be of extreme help as you will be aware of all the concepts. These MCQ Questions on Evolution Class 12 with answers pave for a quick revision of the Chapter thereby helping you to enhance subject knowledge. Have a glance at the MCQ of Chapter 7 Biology Class 12 and cross-check your answers during preparation.
Select the correct answer
Question 1.
Which of the following is used as an atmospheric pollution indicator?
(a) Lepidoptera
(b) Lichens
(c) Lycopersicon
(d) Lycopodium.
Answer
Answer: (b) Lichens
Question 2.
The theory of spontaneous generation stated that
(a) life arose from living forms only
(b) life can arise from both living and non-living
(c) life can arise from non-living things only
(d) life arises spontaneously, neither from living nor from the non-living.
Answer
Answer: (c) life can arise from non-living things only
Question 3.
Animal husbandry and plant breeding programmes are the examples of
(a) reverse evolution
(b) artificial selection
(c) mutation
(d) natural selection.
Answer
Answer: (b) artificial selection
Question 4.
Palaeontological evidences for evolution refer to the
(a) development of embryo
(b) homologous organs
(c) fossils
(d) analogous organs.
Answer
Answer: (c) fossils
Question 5.
The bones of forelimbs of whale, bat, cheetah and man are similar in structure, because
(a) one organism has given rise to another
(b) they share a common ancestor
(c) they perform the same function
(d) the have biochemical similarities.
Answer
Answer: (b) they share a common ancestor
Question 6.
Analogous organs arise due to
(a) divergent evolution
(b) artificial selection
(c) genetic drift
(d) convergent evolution.
Answer
Answer: (d) convergent evolution.
Question 7.
(p + q)² = p² + 2pq + q² = 1 represents an equation used in
(a) population genetics
(b) Mendelian genetics
(c) biometrics
(d) molecular genetics.
Answer
Answer: (a) population genetics
Question 8.
Appearance of antibiotic-resistant bacteria is an example of
(a) adaptive radiation
(b) transduction
(c) pre-existing variation in the population
(d) divergent evolution.
Answer
Answer: (c) pre-existing variation in the population
Question 9.
Evolution of life shows that life forms had a trend of moving from
(a) land to water
(b) dry land to wet land
(c) fresh water to sea water
(d) water to land.
Answer
Answer: (d) water to land.
Question 10.
Viviparity is considered to be more evolved because
(a) the young ones are left on their own
(b) the young ones are protected by a thick shell
(c) the young ones are protected inside the mother’s body and are looked after they are born leading to more chances of survival
(d) the embryo takes a long time to develop.
Answer
Answer: (c) the young ones are protected inside the mother’s body and are looked after they are born leading to more chances of survival
Question 11.
Fossils are generally found in
(a) Sedimentary rocks
(b) Igneous rocks
(c) Metamorphic rocks
(d) Any type of rock.
Answer
Answer: (a) Sedimentary rocks
Question 12.
For the MN-blood group system, the frequencies of M and N alleles are 0.7 and 0.3, respectively. The expected frequency of MN-blood group bearing organisms is likely to be
(a) 42%
(b) 49%
(c) 9%
(d) 58%.
Answer
Answer: (a) 42%
Question 13.
Which type of selection industrial melanism observed in moth Bistort bitularia?
(a) Stabilising
(b) Directional
(b) Disruptive
(d) Artificial.
Answer
Answer: (b) Directional
Question 14.
The most accepted line of descent in human evolution is
(a) Australopithecus → Ramapithecus → Homo sapiens → Homo habilis
(b) Homo erectus → Homo habilis Homo sapiens
(c) Ramapithecus → Homo habilis → Homo erectus → Homo sapiens
(d) Australopithecus → Ramapithecus → Homo erectus → Homo habilis → Homo sapiens.
Answer
Answer: (c) Ramapithecus → Homo habilis → Homo erectus → Homo sapiens
Question 15.
Which of the following is an example for connecting link species?
(a) Lobe fish
(b) Dodo bird
(c) Sea weed
(d) Tyrannosaurus rex.
Answer
Answer: (a) Lobe fish
Question 16.
Match the scientists listed under column ‘A’ with ideas listed under column ‘B’
| Column I | Column II |
| i. Darwin | M. abiogenesis |
| ii. Oparin | N. use and disuse of organs |
| iii. Lamarck | O. continental drift theory |
| iv. Wagner | P. evolution by natural |
(a) i-M; ii-P; iii-N; iv-O
(b) i-P; ii-M; iii-N; iv-O
(c) i-N; ii-P; iii-O; iv-M
(d) i-P; ii-O; iii-N; iv-M.
Answer
Answer: (b) i-P; ii-M; iii-N; iv-O
Question 17.
In 1953 S.L. Miller created primitive earth conditions in the laboratory and gave experimental evidence for origin of first form of life from pre-existing non-living organic molecules. The primitive earth conditions created include
(a) low temperature, volcanic storms, atmosphere rich in oxygen
(b) low temperature, volcanic storms, reducing atmosphere
(c) high temperature, volcanic storms, non-reducing atmosphere
(d) high temperature, volcanic storms, reducing atmosphere containing CH4, NH3 etc.
Answer
Answer: (d) high temperature, volcanic storms, reducing atmosphere containing CH4, NH3 etc.
Question 18.
Variations during mutations of meiotic re-combinations are
(a) random and directionless
(b) random and directional
(c) random and small
(d) random, small and directional.
Answer
Answer: (a) random and directionless
Assertion and Reason Type Questions
These questions consist of two statements each, printed as Assertion and Reason.
While answering these questions, you are required to choose any one of the following four responses:
(a) If both Assertion and Reason are true and Reason is a correct explanation of Assertion.
(b) If both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
(c) If Assertion is true but Reason is false.
(d) If both Assertion and Reason are false.
Question 19.
Assertion: The earliest organisms that appeared on the earth were non-green and presumably anaerobes.
Reason: The first autotrophic organisms were the chemo-autotrophs that never released oxygen.
Answer
Answer: (b) If both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
Question 20.
Assertion: Human ancestors never used their tails and so the tail expressing gene has disappeared in them.
Reason: Lamarck’s theory of evolution is popularly called theory of continuity of germplasm.
Answer
Answer: (d) If both Assertion and Reason are false.
Question 21.
Assertion: Coacervates are believed to be the precursors of life.
Reason: Coacervates were self-duplicating aggregates of proteins surrounded by lipid molecules.
Answer
Answer: (c) If Assertion is true but Reason is false.
Question 22.
Assertion: Chimpanzee is the closest relative of present-day humans.
Reason: The banding pattern in the auto some numbers 3 and 6 is remarkably similar.
Answer
Answer: (a) If both Assertion and Reason are true and Reason is a correct explanation of Assertion.
Question 23.
Assertion: King cobra is adaptive to Oriental realm.
Reason: Wallace line prevents interaction of king cobra and kangaroo.
Answer
Answer: (b) If both Assertion and Reason are true but Reason is not a correct explanation of Assertion.
Question 24.
Assertion: Amphibians have evolved from fishes.
Reason: Archaeopteryx is a fossil linking fishes and amphibians.
Answer
Answer: (c) If Assertion is true but Reason is false.
Question 25.
Assertion: Continued use of eyes leads to an improvement of eyesight.
Reason: Isolating mechanisms prevent reproduction even between the members of same species.
Answer
Answer: (d) If both Assertion and Reason are false.
Question 26.
Assertion: Mutations are basically different from fluctuations.
Reason: Mutations are sudden discontinuous and large variations, while fluctuations are small and continuous variations.
Answer
Answer: (a) If both Assertion and Reason are true and Reason is a correct explanation of Assertion.
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