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प्रश्न
In which book Darwin had published his theory of Natural selection?
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उत्तर
Origin of Species
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संबंधित प्रश्न
Give the principles of Darwin's theory of natural selection.
Name and define the three types of natural selection.
All organisms produce more young ones. Comment
The largest unit in which gene flow is possible is :
(1) Organism
(2) Population
(3) Species
(4) Genes
Answer each question in ‘One’ sentence only:
Identify which one of the following is a test cross.
The theory of Natural Selection was proposed by
Industrial melanism provides a good example of natural selection. Discuss.
What are objections raised against Darwin's theory?
Natural selection is called ‘survival of the fittest. Which of the following statements best describes an organism?
What are homologous structures? Give an example. Is it necessary that homologous structures always have a common ancestor?
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.
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
Distinguish between directional, stabilizing and disruptive selection.
The famous book "The Origin of Species" was written by ______.
Mention four main postulates of Darwin's theory.
Differentiate between Lamarck's Theory and Darwin's Theory.
Define the following term:
Natural selection
