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प्रश्न
Explain the evolution of the long neck of giraffe according to Charles Darwin.
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उत्तर
Darwin explained the evolution of the long neck of modem Giraffe by presuming the existence of variability in length of neck and legs in the ancestral population of Giraffe. Long-necked giraffe with long forelegs was more successful in reaching soft leaves of trees for feeding. Therefore, natural selection favored long neck progeny generation after generation.
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संबंधित प्रश्न
Give the scientific name of the organism which is cited as the classical example of "natural selection".
Given below are two figures (A and B) showing a phenomenon that was first observed in Manchester before and after the year 1850.
Answer the following:
- What name has been given to this phenomenon?
- Give the common name and the scientific name of the insect involved in this phenomenon.
- Briefly mention why the changes shown in the two figures appeared.
- The following phenomenon provides a classical explanation of a scientific theory given by a certain scientist.
- Name and explain the said theory.
- Give the name of the scientist who gave this theory.
Answer the following question.
How did Charles Darwin express 'fitness'?
Answer the following question.
Explain ‘fitness of a species’’ as mentioned by Darwin.
Natural selection is called ‘survival of the fittest. Which of the following statements best describes an organism?
What is the ancient name for all human beings?
The ship on which Darwin was appointed as Naturalist was:
Origin of species was written by:
Who proposed the theory of survival of the fittest?
Industrial melanism was observed in ______.
