Biology - Evolution

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Question - 1

Which of the organs given below is/are homologous?
1. Flipper of a seal        2. Wing of a bat
3. Arm of a man            4. Wing of a moth
Which of the statements given above are correct?

  • A 2, 3 and 4
  • B 3 and 4
  • C 1, 2 and 3
  • D All of these

Question - 2

In which of the following period, the flowering plant, i.e., angiosperm appeared for the first time?

  • A Carboniferous
  • B Triassic
  • C Jurassic
  • D Cretaceous

Question - 3

From the evolutionary point of view, which one among the following is the most primitive animal?

  • A Dolphin
  • B Otter
  • C Turtle
  • D Walrus

Question - 4

1. The early stage of human embryo distinctly possesses gill slits.
2. Australopithecus first time began the bipedal locomotion.
3. Homo sapiens directly evolved from peking man.
Which of the statements above are correct?

  • A 1, 2 and 3
  • B 1 and 2
  • C 2 and 3
  • D 1 and 3

Question - 5

Which one of the following is an example of vestigial organ in man?

  • A Jaw apparatus
  • B Ear muscles
  • C Canine teeth
  • D Humerus

Question - 6

In terms of the evolution of organisms, which one among the following is the most advanced?

  • A Bat-Mammal
  • B Pigeon-Aves
  • C Shark-Pisces
  • D Vulture-Aves

Question - 7

Among living organisms, which one of the following is the most responsible factor for bringing about the origin of a new species?

  • A Isolation
  • B Mutation
  • C Natural selection
  • D Sexual reproduction

Question - 8

Consider the following statements
1. Pasteur's swan-neck experiment proved that new organisms arise from pre-existing ones.
2. Theory of Use and Disuse of Organs was given by Lamarck.
3. Darwin wrote the book 'On the Origin of Species by Means of Natural Selection' in 1859.
4. Lamarck wrote the book 'Philosophie Zoologique'.
Which of the statements given above are correct?

  • A 1, 2, 3 and 4
  • B 1, 2 and 3
  • C 2 and 3
  • D 1 and 2

Question - 9

A true species in Mauritius failed to reproduce because of the extinction of a fruit-eating bird. Which one of the following was that bird?

  • A Dove
  • B Dodo
  • C Condor
  • D Skude

Question - 10

Consider the following statements
1. Hugo de Vries gave the Mutation Theory to explain the mechanism of evolution.
2. Mutation are discontinuous variations also called Saltatory Variation.
3. Mutations are the ultimate source of organic variations.
Which of the statements given above are correct about mutation?

  • A 1, 2 and 3
  • B 2 and 3
  • C 1 and 2
  • D 1 and 3