NCERT Class X Science Class: Chapter –9. Heredity and Evolution – Part-1

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Multiple Choice Questions

Question 1:

Exchange of genetic material takes place in

(a) Vegetative reproduction

(b) Asexual reproduction

(c) Sexual reproduction

(d) Budding

Answer: C

Image Sexual reproduction

Image Sexual Reproduction

Image Sexual reproduction

Question 2:

Two pink colored flowers on crossing resulted in red, pink and white flower progeny. The nature of the cross will be

(a) Double fertilization

(b) Self-pollination

(c) Cross fertilization

(d) No fertilization

Answer: B

Image the Self-pollination

Image the Self-Pollination

Image the Self-pollination

Question 3:

A cross between a tall plant and short pea plant resulted in progeny that were all tall plants because

(a) Tallness is the dominant trait

(b) Shortness is the dominant trait

(c) Tallness is the recessive trait

(d) Height of pea plant is not governed by gene ‘T’ or ‘t’

Answer: A

Image tall plant (TT) and short pea plant (tt) resulted

Image Tall Plant (TT) and Short Pea Plant (Tt) Resulted

Image tall plant (TT) and short pea plant (tt) resulted

Question 4:

Which of the following statement is incorrect?

(a) For every hormone there is a gene

(b) For every protein there is a gene

(c) For production of every enzyme there is a gene

(d) For every molecule of fat there is a gene

Answer: D

Question 5:

If a round, green seeded pea plant is crossed with wrinkled, yellow seeded pea plant, the seeds produced in generation are

(a) Round and yellow

(b) Round and green

(c) Wrinkled and green

(d) Wrinkled and yellow

Answer: A

Image punett squares of dyhybrid cross

Image Punett Squares of Dyhybrid Cross

Image punett squares of dyhybrid cross