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प्रश्न
Write short notes based upon 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 each other in a life-threatening manner for their 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
Explain Darwinian theory of evolution with the help of one suitable example.
Explain the interpretation of Charles Darwin when he observed a variety of smallblack birds on Galapagos Islands.
How do the observations made during moth collection in pre- and post- industrialized era in England support evolution by Natural Selection?
Answer each question in ‘One’ sentence only:
Identify which one of the following is a test cross.
List any three drawbacks of Darwinism.
In which book Darwin had published his theory of Natural selection?
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?
Which one of the following statement is correct?
According to Darwin, two different areas within a continent have different species because they have different:
Species occurring in the different geographical areas are called as ______.
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?
Mention Darwin's observations made on finches during his visit of Galapagos Islands. Write the explanation given by Darwin on his observations.
Write drawbacks of Darwin's theory
Charles Darwin explained the origin of species through ______.
Mention four main postulates of Darwin's theory.
Differentiate between Lamarck's Theory and Darwin's Theory.
