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Science
10th
grade
Natural Selection and Genetic Drift | Heredity and Evolution | Assessment | English | Grade 10
7 questions
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- 1. Multiple Choice
Changes that give the organism the survival advantage in the environment are called ________.
Adaptations
Evolution
Variations
Natural selection
- 2. Multiple Choice
Which mechanism of evolution occur when gene frequencies change over generations due to the random chance?
Natural selection
Genetic drift
Variations
Gene flow
- 3. Multiple Choice
Which of the following statement is correct?
Genetic drift is more likely to happen in small populations
Genetic drift is more likely to happen in large populations
Natural selection is more likely to happen in small populations
Both option 1 and option 2
- 4. Multiple Choice
Following model represents the change in population of an organism. Which of the following evolutionary mechanism is represent by this demonstration?
Natural selection
Migration
Genetic drift
Extinction
- 5. Multiple Choice
In the theory of natural selection, Darwin stated that:
Characters acquired during the life of the organism are transmitted to its progeny
Environment does not play any role in the evolution of the organism
Variations occur due to change in genetic constitution of organism
Natural selection acts on the favourable variations, that appear among the organisms
- 6. Multiple Choice
Which one of the following adaptation will be selected by natural selection in rabbits living in polar region?
Black colored thick fur
White coloured thick fur
White coloured thin fur
Black colored thin fur
- 7. Multiple Choice
In England the light coloured form of moth were found in large number as compared to black coloured form. But during industrial revolution the bark of trees became dark due to the pollution. After this the black coloured form of moth were found in large number than light coloured form of moth. This is an example of:
Appearance of darker coloured moth because of poor sunlight
Acquired inheritance of darker coloured character because of darker environment
Natural selection in which light coloured forms were selected
Natural selection in which darker forms were selected
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