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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
Name the scientist who influenced Darwin and how ?
State the two key concept of Darwinian theory.
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
Given alongside are two figures (A and B) showing a phenomenon that was first observed in Manchester before and after the year 1850.
Answer the following:
- What name has been given to this phenomenon?
- Give the common name and the scientific name of the insect involved in this phenomenon.
- Briefly mention why the changes shown in the two figures appeared.
- The following phenomenon provides a classical explanation of a scientific theory given by a certain scientist.
- Name and explain the said theory.
- Give the name of the scientist who gave this theory.
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?
A basket of vegetables contains carrot, potato, radish and tomato.
Which of them represent the correct homologous structures?
Select the correct statement.
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.
What are the key concepts in the evolution theory of Darwin?
Industrial melanism was highlighted by ______.
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.
