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Evolution · Question 112

AIPMT 2001MCQEasy📈 Topic in 75% papers+4−1
1

Similarities in organism with different genotype indicates : -

  1. Divergent evolution
  2. Macroevolution
  3. Convergent evolution
  4. Microevolution

Answer

(3) Convergent evolution

Solution

As per NCERT, analogous structures are not anatomically similar though they perform similar functions (e.g. wings of butterfly and of birds, eye of octopus and of mammals).

⇒ Organisms of different ancestry (different genotype) living in similar habitats develop similar adaptive features.

∴ Similarity in organisms with different genotypes indicates convergent evolution.

Answer: (3)

AIPMT 2001

Keep practising — Evolution

2

Reason of diversity in living beings : -

  1. Mutation
  2. Short term evolutionary change
  3. Long term evolutionary change
  4. Gradual change
AIPMT 2001
3

Which of the following is closest relative of man ?

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

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
5

First life on earth was : -

  1. Autotrophs
  2. Photoautotrophs
  3. Cyanobacteria
  4. Chemoheterotrophs
AIPMT 2001
6

Forthcoming generations are less adaptive than their parental generation due to

  1. Genetic drift
  2. Natural selection
  3. Mutation
  4. Adaptation
AIPMT 2001
7

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
8

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
9

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
10

Which is not a vestigial organ in man?

  1. Segmental muscles of abdomen
  2. Third molar
  3. Coccyx
  4. Nails
AIPMT 2000
11

Homo sapiens have evolved in

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

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