boards question for class 12th evolution
Answers
Answer:
CBSE Class 12 Biology Important Questions
Chapter 1 - Reproduction in Organism.
Chapter 2 - Sexual Reproduction in Flowering Plants.
Chapter 3 - Human Reproduction.
Chapter 4 - Reproductive Health.
Chapter 5 - Principles of Inheritance and Variation.
Chapter 6 - Molecular Basis of Inheritance.
More items...
Answer:
Important board Questions for Class 12 Chapter 7: Evolution
1 marks, 3 marks, and 5 marks
questions asked in board exam.
Explanation:
Very Short Answer Type Questions
Q.1. List the characteristics of fossils.
Q.2. How is the age of living tree estimated?
Q.3. Name the process to estimate the age of a fossil.
Q.4. What is the pre-condition for adaptive radiation?
Q.5. How is the age of rock estimated?
Q.6. What is the founder effect?
Q.7. What is the bottleneck effect?
Q.8. What is natural selection?
Q.9. What are the factors affecting the Hardy-Weinberg equilibrium?
Q.10. What are the various stages of evolution?
Short Answer Type Questions
Q.1. What do you mean by “survival of the fittest”?
Q.2. Comment on the statement, “Migration may increase or decrease the effects of selection”.
Q.3. Explain the terms:
Race
Breed
Cultivars
Variety
Q.4. How is nascent oxygen toxic to aerobic living organisms?
Q.5. Creation and presence of variation are directionless, but natural selection is directional as it is in the context of adaptation. Comment.
Q.6. Comment on the statement with reference to industrial melanism, “Evolution is apparently reversible”.
Q.7. What is genetic drift?
Q.8. Explain adaptive radiation. Give examples in support of your answer.
Q.9. How is convergent evolution different from divergent evolution?
Q.10. State the Hardy-Weinberg principle.
Long Answer Type Questions
Q.1. Enumerate the key concepts in the evolution theory of Darwin.
Q.2. Describe the phenomenon in which two organisms occupying the same geographical area show the same strategies of adaptation.
Q.3. What is the driving force behind divergent evolution? Explain.
Q.4. Which law states that the sum of allelic frequencies in a population is constant? List the five factors that influence the law.
Q.5. If the industries were removed, what impact would it have on the population of moths in England?
I hope it will helps you.
Best of luck for your exams.!!