Science · World of living · chapter 7 of 13

Class 10 Science Chapter 7: How do Organisms Reproduce? Assertion-reason questions with answers

2 assertion-reason questions on How do Organisms Reproduce?, each with its answer and the reason, written from the NCERT chapter. Open a question's solution to check your working; then take the free test to find your next chapter. Each question gives an Assertion (A) and a Reason (R); choose how they stand to each other.

Question 1
Assertion (A): Rose plants raised from cuttings of one bush all carry the colour and scent of that bush. Reason (R): Plants produced by vegetative propagation are genetically similar enough to the parent plant to have all its characteristics.
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Answer: (a) Both A and R are true, and R is the correct explanation of A.

Both are true, and R, the genetic similarity of vegetatively propagated plants to the parent, is exactly why the cuttings show the parent's characteristics.

Question 2
Assertion (A): A Hibiscus flower is bisexual. Reason (R): The stamen produces yellowish pollen grains.
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Answer: (b) Both A and R are true, but R is not the correct explanation of A.

Both are true. Hibiscus is bisexual because it contains both stamens and pistil; that the stamen makes pollen does not explain why the flower has both parts.

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