Class 10 Science MCQ Chapter 9 Heredity and evolution

Class 10 Science MCQ Chapter 9 Heredity and evolution, Class 10 Science MCQ Question Answer, Class 10 Science Multiple Choice Question Answer to each chapter is provided in the list of SCERT Science Class 10 Objective Types Question Answer so that you can easily browse through different chapters and select needs one. Class 10 Science MCQ Chapter 9 Heredity and evolution Question Answer can be of great value to excel in the examination.

SCERT Class 10 Science MCQ Chapter 9 Heredity and evolution

SCERT Class 10 General Science MCQ Chapter 9 Heredity and evolution Notes covers all the exercise questions in SCERT Science Textbooks. The NCERT Class 10 Science MCQ Chapter 9 Heredity and evolution provided here ensures a smooth and easy understanding of all the concepts. Understand the concepts behind every chapter and score well in the board exams.

Heredity and evolution

Chapter – 9

Multiple Choice Questions & Answers

1.  For which pair of following alleles, we will get a shorter plant-

(a) TT 

(b) Tt

(c) tt

(d) tT

Ans: (c) tt

2. Which pair of sex chromosomes represents a girl child –

(a) XY

(b) XX

(c) YY

(d) none of these.

Ans: (b) XX

3. Which one of the following represents analogous characteristics-

(a) Fore-limbs of a lizard and a frog.

(b) Fore-limbs of a monkey and a bird.

(c) Wings of a bat and a bird.

(d) Arms of a bat and a bird.

Ans: (d) Arms of a bat and a bird.

4. If a hybrid generation is created with a pair of contrasting traits, the recessive trait is expressed in –

(a) F₂ generation.

(b) F₃ generation.

(c) F₁ generation.

(d) None of these.

Ans: F₂ generation.

5. Which one of the following is known as the phenotypic ratio of Mendel’s monohybrid cross –

(a) 1: 9

(b) 9 : 3 : 3 :1 

(c) 3:1

(d) 9 : 1 : 3 : 3

Ans: (c) 3:1

6. Which one of the following is referred to as the phenotypic ratio of Mendel’s dihybrid cross –

(a) 9:1:1:3 

(b) 9:3:3:1

(c) 1:3:9:3

(d) 9:3:1:3

Ans: (b) 9:3:3:1

7. Which of the following scientist is known as the ‘Father of Genetics’?

(a) Darwin.

(b) Johansen.

(c) Betison.

(d) Mendel.

Ans: (d) Mendel.

8. The physical basis of heredity is –

(a) Nucleus.

(b) Cytoplasm.

(c) Chromosomes.

(d) None of these.

Ans: (c) Chromosomes.

9. In the process of evolution, the process by which organism with new characteristics are produced due to the change in characteristics of the organism of a species by various factors is called.

(a) Speciation.

(b) Evolution.

(c) Inheritance.

(d) Variation.

Ans: (a) Speciation.

10. A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing white flowers. The progeny all bore violet flowers, but almost half of them were short. This suggests that the genetic make-up of the tall parent can be depicted as-

(a) TTWW

(b) TTww

(c) TtWW

(d) TtWw

Ans: (c) TtWW

11. An example of homologous organs is-

(a) Our arm and a dog’s fore-leg.

(b) Our teeth and an elephant’s tusks.

(c) Potato and runners of grass)

(d) All of the above.

Ans: (d) All of the above.

12. In evolutionary terms, we have more in common with-

(a) A chinese school-boy.

(b) A chimpanzee.

(c) A spider.

(d) A bacterium.

Ans: (a) A chinese school-boy.

13. The organs having different origin but similar appearance and similar functions are-

(a) Homologous.

(b) Analogous.

(c) Adjacent.

(d) Vestigial.

Ans: (b) Analogous.

14. Human originated in-

(a) Asia.

(b) Africa.

(c) Australia.

(d) Europe.

Ans: (b) Africa.

15. Oraganes similar in origin and basic structure but different in function are –

(a) Homologous.

(b) Analogous.

(c) Adjacent.

(d) Vestigial.

Ans: (a) Homologous.