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Evolution · Question 67

AIPMT 2008MCQMedium📈 Topic in 12% papers+4−1
1

Which one of the following scientist's name is correctly matched with the theory put forth by him?

  1. Mendel — Theory of pangenesis
  2. de Vries — Natural selection
  3. Pasteur — Inheritance of acquired characters
  4. Weismann — Theory of continuity of germplasm

Answer

(4) Weismann — Theory of continuity of germplasm

Solution

Theory of pangenesis was given by Darwin, not Mendel (Mendel gave the laws of inheritance).

Natural selection was proposed by Darwin; de Vries proposed the mutation theory.

Inheritance of acquired characters was given by Lamarck; Pasteur disproved spontaneous generation.

August Weismann proposed the theory of continuity of germplasm.

∴ Weismann — Theory of continuity of germplasm is correctly matched.

Answer: (4)

AIPMT 2008

Keep practising — Evolution

2

Which one of the following is incorrect about the characteristics of protobionts (coacervates and microspheres) as envisaged in the abiogenic origin of life?

  1. They could separate combinations of molecules from the surroundings
  2. They were able to reproduce
  3. They were partially isolated from the surroundings
  4. They could maintain an internal environment
AIPMT 2008
3

Thorn of Bougainvillea and tendril of Cucurbita are examples of:

  1. analogous organs
  2. homologous organs
  3. vestigial organs
  4. retrogressive evolution
AIPMT 2008
4

The concept of chemical evolution is based on-

  1. Crystallization of chemicals
  2. Effect of solar radiation on chemicals
  3. Possible origin of life by combination of chemicals under suitable environmental conditions
  4. Interaction of water, air and clay under intense heat
AIPMT 2007
5

The finches of Galapagos islands provide an evidence in favour of-

  1. Special Creation
  2. Biogeographical Evolution
  3. Evolution due to Mutation
  4. Retrogressive Evolution
AIPMT 2007
6

When two species of different genealogy come to resemble each other as a result of adaptation, the phenomenon is termed:-

  1. Microevolution
  2. Convergent evolution
  3. Co-evolution
  4. Divergent evolution
AIPMT 2007
7

Adaptive radiation refers to:-

  1. Adaptations due to Geographical isolation
  2. Migration of members of a species to different geographical areas
  3. Evolution of different species from a common ancestor
  4. Power of adaptation in an individual to a variety of environments
AIPMT 2007
8

If the mean and the median pertaining to a certain character of a population are of the same value, the following is most likely to occur:-

  1. A normal distribution
  2. A T-shaped curve
  3. A skewed curve
  4. A bi-modal distribution
AIPMT 2007
9

Which one of the following statements is correct?

  1. Ontogeny repeats phylogeny.
  2. There is no evidence of the existence of gills during embryogenesis of mammals.
  3. Stem cells are specialized cells.
  4. All plant and animal cells are totipotent.
AIPMT 2007
10

Which one of the following is not a living fossil?

  1. Peripatus
  2. King crab
  3. Sphenodon
  4. Archaeopteryx
AIPMT 2006
11

An important evidence in favour of organic evolution is the occurrence of-

  1. Homologous organs only
  2. Homologous and vestigial organs
  3. Homologous and analogous organs
  4. Analogous and vestigial organs
AIPMT 2006

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