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प्रश्न
Write short notes based upon the information known to you.
Darwin’s theory of natural selection
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
Name the scientist who influenced Darwin and how ?
How do the observations made during moth collection in pre- and post- industrialized era in England support evolution by Natural Selection?
Explain the phenomenon that is well represented by Darwin's finches other than natural selection.
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.
Briefly discuss the Theory of Natural Selection as given by Darwin.
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.
List any three drawbacks of Darwinism.
Explain the evolution of the long neck of giraffe according to Charles Darwin.
The theory of natural selection for evolution was proposed by ______.
Differences between organisms in a species are described as variations. Which of the following would you describe as a continuous variation?
The more characteristics two species have in common ______
Which concept was not included in Charles Darwin’s theory of Natural Selection?
Natural selection is called ‘survival of the fittest. Which of the following statements best describes an organism?
What is the ancient name for all human beings?
Select the correct statement.
Study the following cross and showing self pollination in F1, fill in the blank and answer the question that follows
| Parents | RRYY | × | rryy |
| Round, Yellow | wrinkled, green | ||
| F1- | Rr Yy | × | ? |
| Round, yellow |
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?
The ship on which Darwin was appointed as Naturalist was:
Origin of species was written by:
Species occurring in the different geographical areas are called as ______.
Write drawbacks of Darwin's theory
Distinguish between directional, stabilizing and disruptive selection.
Industrial melanism was observed in ______.
Which one of the following was not explained by Darwinism?
The scientist who is regarded as the "Father of Evolution" is ______.
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.
Define the following term:
Natural selection
