By illustrating the examples of African giraffe and snakes Lamarck emphasized mainly that:

Organic Evolution Theories Mcqs
BILAL KHATTAK0

A.Nature selects the forms which are fittest in the struggle for existence
B.Development and efficiency of body organs are an proportion to their use and disuse
C.Variations (environmental or mutations) are respobsible for process of organic evolution
D.The organisms have enormous fertility leading to over production but their number is always kept constant by the nature

Related Mcqs:

  1. Increase in the length of neck and fore legs in African giraffe was explained by Lamarck due to the fact that ancient giraffes stretched their neck and fore legs generation after generation and the character acquired as a result of use was inherited. Darwin also explained the phenomenon. Can you point out the way in which Darwin described it:
  2. Neck and fore limbs in African giraffe increased in length as a result of:
  3. One of the criticism to Darwinism was that it could not give satisfactory explanation for one of the following points:
  4. Which of the following facts does not hold truth with reference to De Vries Theory of organic evolution:
  5. Greatest drawback of Darwin’s Theory was that it could not offer suitable explanation for:
  6. The Theory of Natural Selection proposed by Charles Darwin for explaining Organic Evolution was based on:
  7. Lamarckism envisages that the:
  8. Which of the following concepts is attributed to Charles Darwin:
  9. One of the evolutionary concept in Biology was projected by Darwin in his book Origin of Species. It has been discussed as:
  10. In a population, unrestricted reproductive capacity is called as __________?

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