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प्रश्न
What are objections raised against Darwin's theory?
उत्तर
Some of the main objections raised against Darwin’s theory of natural selection are as follows:
- Natural selection is not the only factor responsible for evolution.
- In his theory, Darwin did not explain the inheritance of useful and useless modifications.
- No explanation regarding slow and abrupt changes was provided in this theory.
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संबंधित प्रश्न
Name the scientist who influenced Darwin and how ?
Explain the interpretation of Charles Darwin when he observed a variety of smallblack birds on Galapagos Islands.
How do the observations made during moth collection in pre- and post- industrialized era in England support evolution by Natural Selection?
State the two key concept of Darwinian theory.
All organisms produce more young ones. Comment
Answer each question in ‘One’ sentence only:
Identify which one of the following is a test cross.
Give the scientific name of the organism which is cited as the classical example of "natural selection".
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.
State Darwin’s theory of evolution.
List any three drawbacks of Darwinism.
Explain the evolution of the long neck of giraffe according to Charles Darwin.
In which book Darwin had published his theory of Natural selection?
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?
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?
Select the correct statement.
If the fossil of an organism is found in the deeper layers of earth, then we can predict that
What are homologous structures? Give an example. Is it necessary that homologous structures always have a common ancestor?
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?
According to Darwin, two different areas within a continent have different species because they have different:
Theory of natural selection dwells on:
Species occurring in the different geographical areas are called as ______.
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.
Distinguish between directional, stabilizing and disruptive selection.
The selective agent that was responsible for causing the change in peppered moth was ______.
The scientist who is regarded as the "Father of Evolution" is ______.
Define the following term:
Speciation
Define the following term:
Natural selection
