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प्रश्न
Write a short note based on the information known to you.
Darwin’s theory of natural selection.
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उत्तर
- Darwin is famous for the theory which he published in the book titled ‘Origin of Species’.
- Darwin’s theory of natural selection is based on the concept of survival of the fittest.
- Organisms can reproduce prolifically.
- Under limited resources, organisms compete with one another in a life-threatening manner for survival.
- According to this theory, only those organisms survive which show modifications for winning the competition. The selected organisms then give rise to new species with their specific set of characters.
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संबंधित प्रश्न
What is "fitness of an individual" according to Darwin?
Industrial melanism provides a good example of natural selection. Discuss.
Explain the evolution of the long neck of giraffe according to Charles Darwin.
Answer the following question.
Explain ‘fitness of a species’’ as mentioned by Darwin.
In which book Darwin had published his theory of Natural selection?
Identify the two organisms which are now extinct and are studied from their fossils.
Natural selection is called ‘survival of the fittest. Which of the following statements best describes an organism?
Wild cabbage has evolved into new varieties like cabbage, broccoli, and cauliflower by ______
A basket of vegetables contains carrot, potato, radish and tomato.
Which of them represent the correct homologous structures?
Which of the following sequences fits into the organic evolution theory proposed by Charles Darwin and Alfred Wallace?
The ship on which Darwin was appointed as Naturalist was:
According to Darwin, two different areas within a continent have different species because they have different:
Match List - I with List - II.
| List - I | List II | ||
| (a) | Adaptive radiation | (i) | Selection of resistant varieties due to excessive use of herbicides and pesticides |
| (b) | Convergent evolution | (ii) | Bones of forelimbs in Man and Whale |
| (c) | Divergent evolution | (iii) | Wings of Butterfly and Bird |
| (d) | Evolution by anthropo- genic action | (iv) | Darwin Finches |
Choose the correct answer from the options given below.
Who proposed the theory of survival of the fittest?
Industrial melanism was observed in ______.
Which one of the following was not explained by Darwinism?
The scientist who is regarded as the "Father of Evolution" is ______.
Mention four main postulates of Darwin's theory.
Match the name of the scientist in Column I with the name of the theory in Column II.
| Column (I) | Column (II) | ||
|---|---|---|---|
| i. | August Weisman | a. | Theory of origin of species |
| ii. | Hugo de Vries | b. | Theory of chemical evolution |
| iii. | Charles Darwin | c. | Theory of continuity of germplasm |
| iv. | Oparin Haldane | d. | Mutation theory |
Choose the correct option.
