Advertisements
Advertisements
प्रश्न
List any three drawbacks of Darwinism.
Mention any four drawbacks of Darwinism.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
Name the scientist who influenced Darwin and how ?
What is "fitness of an individual" according to Darwin?
Name and define the three types of natural selection.
All organisms produce more young ones. Comment
The theory of Natural Selection was proposed by
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.
How did Charles Darwin express 'fitness'?
Natural selection is a driving force for evolution-How?
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?
What are the key concepts in the evolution theory of Darwin?
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 ______.
Mention Darwin's observations made on finches during his visit of Galapagos Islands. Write the explanation given by Darwin on his observations.
Charles Darwin explained the origin of species through ______.
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.
Define the following term:
Speciation
