Question

what are the most important questions of chapter heredity and evolution class 10 CBSE???.....????
PLSS TELL ME FAST IT'S REALLY URGENT AS I HAVE TO FINISH MY BIO SYLLABUS TODAY ONLY,

I HAVE MY BOARD EXAM(science) ON 13th MARCH........!!!!!!!!!

Answer 1

HERE IS YOUR ANSWER. . . .


Q1. What is gene ?

Q2. What is meant by analogous organs? Taking a suitable example, explain how they support the theory of Organic Evolution.


Q3. What is a sex chromosome?


Q4. Define ‘evolution’. Describe Darwin’s theory of evolution.


Q5. The sex of the children is determined by what they inherit from their father and not their mother.” Justify


Q6. Define variation in relation to a species. Why is variation beneficial to the species?


Q7. Describe briefly four ways in which individuals with a particular trait may increase in a population.


Q8. What are fossils? What do they tell us about the process of evolution?


Q9. Distinguish between acquired and inherited traits by giving one example of each. Why are traits acquired during the lifetime of an individual not inherited?


Q10. The human beings who look so different from each other in terms of colour, size and looks are said to belong to the same species. Why? Justify your answer.


Q11. A blue colour flower plant denoted by BB is cross bred with that of white colour flower plant denoted by bb.
(a) State the colour of flower you would expect in their F1 generation plants.
(b) What must be the percentage of white flower plants in F2 generation if flowers of F1 plants are self-pollinated?
(c) State the expected ratio of the genotypes BB and Bb in the F2 progeny.





Q12. State the meaning of inherited traits and acquired traits. Which of the two is not passed on to the next generation? Explain with the help of an example.






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