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Evolution · Question 113

AIPMT 2001MCQMedium📈 Topic in 50% papers+4−1
1

Reason of diversity in living beings : -

  1. Mutation
  2. Short term evolutionary change
  3. Long term evolutionary change
  4. Gradual change

Answer

(3) Long term evolutionary change

Solution

As per NCERT, the diversity of life forms on earth has arisen through evolution over millions of years.

Mutation only provides the raw material (variations); short-term changes produce only small differences within a population.

⇒ Accumulation of variations and natural selection over a very long time gives rise to new species.

∴ Diversity in living beings is due to long term evolutionary change.

Answer: (3)

AIPMT 2001

Keep practising — Evolution

2

Which of the following is closest relative of man ?

  1. Gorilla
  2. Chimpanzee
  3. Gibbon
  4. Orangutan
AIPMT 2001
3

Which of the following is correct order of the evolutionary history of man ?

  1. Peking man, Heidelberg man, Neanderthal man, Cro-Magnon man
  2. Peking man, Neanderthal man, Homo sapiens, Cro-Magnon man
  3. Peking man, Neanderthal man, Homo sapiens, Heidelberg man
  4. Peking man, Homo sapiens, Neanderthal man, Cro-Magnon man
AIPMT 2001
4

First life on earth was : -

  1. Autotrophs
  2. Photoautotrophs
  3. Cyanobacteria
  4. Chemoheterotrophs
AIPMT 2001
5

Forthcoming generations are less adaptive than their parental generation due to

  1. Genetic drift
  2. Natural selection
  3. Mutation
  4. Adaptation
AIPMT 2001
6

Occurrence of endemic species in South America and Australia is due to

  1. There is no terrestrial route to these places
  2. Retrogressive evolution
  3. These species have become extinct from other regions
  4. Continental separation
AIPMT 2001
7

Darwin's theory of pangenesis shows similarity with theory of inheritance of acquired characters then what shall be correct according to it

  1. There should be some physical basis of inheritance
  2. Size of organs increase with aging
  3. Useful organs become strong and developed while useless organs become extinct. These organs help in struggle for survival
  4. Development of organs is due to will power
AIPMT 2001
8

In Lederberg's replica plating experiment, what shall be used to obtain a streptomycin-resistant strain?

  1. Only minimal medium
  2. Complete medium and streptomycin
  3. Only complete medium
  4. Minimal medium and streptomycin
AIPMT 2001
9

Which is not a vestigial organ in man?

  1. Segmental muscles of abdomen
  2. Third molar
  3. Coccyx
  4. Nails
AIPMT 2000
10

Homo sapiens have evolved in

  1. Pleistocene
  2. Paleocene
  3. Oligocene
  4. Holocene
AIPMT 2000
11

Character which is closely related to human evolution

  1. Reduction in size of jaws
  2. Disappearance of tail
  3. Flat nails
  4. Binocular vision
AIPMT 2000

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