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प्रश्न
List any three drawbacks of Darwinism.
Mention any four drawbacks of Darwinism.
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उत्तर
The following are the drawbacks of Darwinism:
- Darwin could not explain the origin of variations or how they arise. He failed to distinguish between environmental and hereditary variations.
- Darwin did not differentiate between somatic and germinal variations. He mistakenly considered all variations as heritable.
- Darwin’s theory lacked clarity on how new characters arose or how the “arrival of the fittest” occurred. He didn’t explain how advantageous traits were inherited.
- Darwin believed in gradual evolution, but he didn’t recognize intermediate forms. He also couldn’t explain species extinction or vestigial organs.
- Darwin couldn’t explain neutral traits or hybrid sterility. He also overlooked the hindrance caused by over-specialized organs like tusks and antlers.
Notes
Students should refer to the answer according to their question and preferred marks.
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संबंधित प्रश्न
Name the scientist who influenced Darwin and how ?
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Natural selection is a driving force for evolution-How?
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Origin of species was written by:
Theory of natural selection dwells on:
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.
Nature has a way of causing organisms that inherit advantageous traits to survive and reproduce more successfully than the ones that do not. This process is known as ______.
Write drawbacks of Darwin's theory
The selective agent that was responsible for causing the change in peppered moth was ______.
Which one of the following was not explained by Darwinism?
Mention four main postulates of Darwin's theory.
Define the following term:
Speciation
Differentiate between Lamarck's Theory and Darwin's Theory.
