CBSE Questions for Class 12 Medical Biology Evolution Quiz 1 - MCQExams.com

Match the hominids with their correct brain size.

a) Homo habilis(i) $$900$$ cc
b) Homo neanderthalensis(ii) $$1350$$ cc
c) Homo erectus(iii) $$650-800$$ cc
d) Homo sapiens(iv) $$1400$$ cc

Select the correct option.
  • a)-(iii), b)-(i), c)-(iv), d)-(ii)
  • a)-(iii), b)-(ii), c)-(i), d)-(iv)
  • a)-(iii), b)-(iv), c)-(i), d)-(ii)
  • a)-(iv), b)-(iii), c)-(i), d)-(ii)
The process by which organism with different evolutionary history evolve similar phenotypic adaptations in response to a common environmental challenge, is called
  • Natural selection.
  • Convergent evolution.
  • Non-random evolution.
  • Adaptive radiation.
The chronological order of human evolution from early to the recent is
  • Ramapithecus $$\rightarrow$$ Homo habilis $$\rightarrow$$ Australopithceus $$\rightarrow$$ Homo erectus
  • Australopithecus $$\rightarrow$$ Homo habilis $$\rightarrow$$ Ramapithecus $$\rightarrow$$ Homo erectus
  • Australopithecus $$\rightarrow$$ Ramapithecus $$\rightarrow$$ Homo habilis $$\rightarrow$$ Homo erectus
  • Ramapithecus $$\rightarrow$$ Australopithceus $$\rightarrow$$ Homo habilis $$\rightarrow$$ Homo erectus
The tendency of population to remain in genetic equilibrium may be disturbed by _________.
  • Random mating
  • Lack of migration
  • Lack of mutations
  • Lack of random mating
The eye of octopus and eye of cat show different patterns of structure, yet they perform similar function. This is an example of
  • Homologous organs that have evolved due to convergent evolution.
  • Homologous organs that have evolved due to divergent evolution.
  • Analogous organs that have evolved due to convergent evolution.
  • Analogous organs that have evolved due to divergent evolution.
Homo sapiens implies
  • Human race
  • Human beings
  • Modern man
  • None of the above
  • Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
  • Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
  • Assertion is correct but Reason is incorrect.
  • Both Assertion and Reason are incorrect.
Which of the following was the transitional stage (connective link) between apes and humans?
  • Homo habilis
  • Homo erectus
  • Australopithecus ramidus
  • Australopithecus africanus
Wings of pigeon, mosquito and bat shows 
  • Atavism
  • Mutation
  • Divergent evolution
  • Convergent evolution
Tendrils in plants are an example of
  • Convergent evolution
  • Radiation
  • Divergent evolution
  • Coevolution
The cranial capacity was largest among the 
  • Peking man
  • African man
  • Java ape man
  • Neanderthal man
There is no life on moon because there is no
  • Carbon
  • Nitrogen
  • Water
  • Silicates
The chance of elimination of genes from a small population is an example of
  • Selection pressure
  • Speciation
  • Adaptation
  • Genetic drift
The process of evolution in which species inhabiting the same area with different evolutionary lineage resemble each other is known as
  • Adaptive radiation
  • Convergent evolution
  • Sympatric speciation
  • Allopatric speciation
  • Punctuated equilibrium
The earliest type of organisms appeared in the ocean were
  • Autotrophs
  • Heterotrophs
  • Chemoheterotroph
  • Photoautotrophs
Coenozoic era is known as
  • Age of Amphibia and Lycopods
  • Age of Marine Invertebrate
  • Age of Reptiles and gymnosperms
  • Age of Mammals and Modern flora
Which of the following concept explains about the constant occurrence of allele frequencies generation after generation in a small population not influenced by evolution?
  • Mendel's principle of segregation
  • Mendel's principle of independent assortment
  • Darwin's theory of natural selection
  • Darwin's theory of survival of the fittest
  • The principle of Hardy-Weinberg equilibrium
The earliest and most primitive anthropoid ape during Oligocene is called
  • Parapithecus
  • Prophopithecus
  • Proconsul
  • Limnopithecus
First cell produced on earth is
  • Protobiont
  • Protozoa
  • Metazoa
  • None of the above
The dinosaurs were maximum during the period of
  • Jurassic
  • Triassic
  • Cretaceous
  • Palaeocene
The gene frequency of a population changes ____.
  • In one particular environment
  • When the population decreases
  • When the population live in different conditions
  • When population reproduces asexually
If the Neanderthals are not the direct ancestors of humans, is it still possible for humans and Neanderthals to be related?
  • Yes, because we share a common ancestor
  • Yes, but only if humans and Neanderthals could have interbred
  • No, because the human evolutionary tree is strictly linear and without branches
  • No, because this means that Neanderthals evolved from an entirely different branch of organisms than humans did
Which one among the following is an example for homology?
  • Eye of octopus and mammals
  • Tuber of sweet potato and potato
  • Flippers of penguins and dolphins
  • Thorns and tendrils of Bougainvillea and Cucurbita
If the frequency of an autosomal dominant allele is 0.Calculate the frequency of recessive phenotype in a population of 6000:-
  • 1200
  • 4000
  • 960
  • 1000
The jurassic period belongs to the era 
  • Coenozoic
  • Paleozoic
  • Mesozoic
  • Protozoic
During origin of life, nucleoprotein gave most probably the first sign of
  • Life
  • Amino Acids
  • Soil
  • Sugar
Under certain conditions scientists have obtained cell-like structures. These are known as
  • Microbes
  • Protists
  • Coacervates
  • Prebiotic soup
Life originated in
  • Precambrian era
  • Proterozoic era
  • Mesozoic era
  • Cenozoic era
_________ is an example for adaptive radiation. 
  • Darwins finches
  • Australian marsupial
  • Both (a) and (b)
  • Kangaroo
Abiogenesis means
  • Origin of life from non-living substances
  • Origin of life from living organisms
  • Origin of Viruses and microbes
  • None of the above
Coacervates are
  • Protobionts having polysaccharide + protein + $$H_2O$$
  • Protein Aggregate
  • Protein and lipid aggregates
  • None of the above
Theory of catastrophism was supported by
  • Louis Pasteur
  • A.I. Oparin
  • Cuvier
  • Haldane
Coacervates were experimentally produced by
  • Urey and Miller
  • Jacob and Monod
  • Fischer and Huxley
  • Sidney Fox and Oparin
Theory of special creation was given by
  • Weisman
  • Helmon
  • Manpertuis
  • Father Saurez
Hardy-Weinberg equilibrium is known to be affected by gene flow, genetic drift, mutation, genetic recombination and
  • Evolution
  • Limiting factors
  • Saltation
  • Natural selection
  • Over production
The theory of evolution indicates that
  • Man evolved from monkeys
  • Monkey evolved from man
  • Man evolved from dinosaur
  • Man and apes had common ancestors
Indicate the completely correct statement about human races
  • All human races can interbreed but most will produce infertile young ones
  • Different human races cannot interbreed
  • Some human races can interbreed
  • All human races can interbreed and produce fertile

    offspring
In which period, birds in geological development of earth arose?

  • Permian
  • Carboniferous
  • Jurassic
  • Oligocene and eocene
"In different races, there may be difference in culture and ways of
 living but capacity in all is the same". It was the opinion of ___________.
  • Darwin
  • Wallace
  • Lamarck
  • Shapiro
Most primitive living mammals which provide an evidence of organic evolution 
from geographical distribution are found in
  • China
  • India
  • Australia
  • Africa
In which era mammals and birds evolved?
  • Mesozoic
  • Cenozoic
  • Palaeozoic
  • Precambrian
The idea that life originates from preexisting life is referred as
  • Biogenesis theory
  • Special creation theory
  • Abiogenesis theory
  • Extraterrestrial theory
Big bang theory was proposed by
  • Kant
  • Lemaitre
  • K. Bahadur
  • Weismann
There was no life in
  • Azoic era
  • Mesozoic era
  • Palaeozoic era
  • Cenozoic era
The existence of marsupials in Australia and New Zealand prove
  • Genetic drift
  • Geological period
  • Continental drift
  • Both B and C
Which era is dubbed as the age of prokaryotic microbes?
  • Phanerozoic
  • Proterozoic
  • Precambrian
  • Archean
Mutations which normally happen randomly are considered one of the raw materials for evolution because they

  • Are stable
  • Contribute to new variation in organism
  • Cause death of organism
  • None of the above
The cenozoic era is known as
  • Age of mammals and modern flora
  • Age of reptiles and gymnosperms
  • Age of amphibia and lycopods
  • Age of marine invertebrates
Evolutionary convergence is characterized by
  • Development of characteristics by random mating
  • Replacement of common characteristics in different group
  • Development of dissimilar characteristics in closely related groups
  • Development of a common set of characteristics in group of different ancestry
Development of unrelated groups of animals along parallel lines in adaptation to a similar environment is called
  • Adaptive convergence
  • Adaptive radiation
  • Adaptive divergence
  • Adaptive induction
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