Class 10 Science MCQ Questions of Heredity and Evolution with Answer

CBSE Class 10 Science MCQ Questions of Heredity and Evolution are given here. Right answer with clarification is additionally accommodated for each question. All of these questions depend on significant ideas happening in the Heredity and Evolution part of class 10. Students should practice with these MCQ Questions to get prepared for the objective type question which will be asked in CSBE Class 10 Science Exam.

Explore how the process by which the features of an organism are passed on from one generation to another by the help of MCQ Questions.

Check beneath the MCQ Questions for class 10 Science with Answer Clear your idea of Heredity and Evolution.

1. Who have a perfect pair of sex chromosomes?

(a) Girls only
(b) Boys only
(c) Both girls and boys
(d) It depends on many other factors

Answer:

(a) Girls only

2. If a normal cell of human body contains 46 pairs of chromosomes then the numbers of chromosomes in a sex cell of a human being is most likely to be:

(a) 60
(b) 23
(c) 22
(d) 40

Answer:

(b) 23

Explanation: The sex gametes are always haploid. They have 23 chromosomes.

3. Which of the following determines the sex of a child?

(a) The length of the mother’s pregnancy
(b) The length of time between ovulation and copulation
(c) The presence of an X chromosome in an ovum
(d) The presence of a Y chromosome in a sperm

Answer:

(d) The presence of a Y chromosome in a sperm

Explanation: The male sex chromosome is the deciding factor for the gender of the child. If the X part fertilizes with the ovum, girl is born. If Y fertilizes, then a boy is born.

4. Assertion: Acquired trait cannot be passed on from one generation to next generation.

Reason: Inaccuracy during DNA copying of acquired trait is minimum.

(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.

Answer:

(c) A is true but R is false.

5. Human offspring’s sex is determined

(а) through father’s sex chromosomes.
(b) through mother’s sex chromosomes.
(c) by hormones.
(d) by enzymes.

Answer:

(а) through father’s sex chromosomes.

6. Which concept was not included in Charles Darwin’s theory of Natural Selection?

(a) Struggle for existence
(b) Punctuated equilibrium
(c) Survival of the fittest
(d) Overproduction of offspring.

Answer:

(b) Punctuated equilibrium

7. Which is the one characteristic of the parents that can be inherited by their children?

(a) Deep scar on chin
(b) Snub nose
(c) Technique of swimming
(d) Cut nose

Answer:

(b) Snub nose

Explanation: A dominant inherent character can only be inherited by the children.

8. What is the ancient name for all human beings?

(a) Monkey
(b) Chimpanzee
(c) Homo sapiens
(d) Invertebrates

Answer:

(c) Homo sapiens

Explanation: The scientific name of human is Homo sapiens.

9. The maleness of a child is determined by ___.

(a) X chromosome in zygote
(b) Y chromosome in zygote
(c) The cytoplasm of germ cells which determines the sex
(d) Sex is determined by chance

Answer:

(b) Y chromosome in zygote

10. The exchange in genetic material takes place in _____.

(a) vegetative propagation
(b) Asexual reproduction
(c) sexual reproduction
(d) budding

Answer:

(c) sexual reproduction

11. ___is used for studying human evolution .

(a) Excavating
(b) Time dating
(c) Determining DNA sequence
(d) All

Answer:

(d) All

12. Round and yellow seed colour is:

(a) incomplete dominance
(b) recessive
(c) hybrid
(d) dominant

Answer:

(d) dominant

13. Mendel performed his famous hybridization experiments on:

(a) garden pea
(b) Hibiscus
(c) rose
(d) cucurbita

Answer:

(a) garden pea

14. The pairs of characters used by Mendel during his experiments were:

(a) ten
(b) six
(c) seven
(d) two

Answer:

(c) seven

15. The theory of Natural Selection was proposed by

(a) Lamarck
(b) Darwin
(c) Mendel
(d) Haldane

Answer:

(b) Darwin

16. How life might have originated on earth was experimentally shown by

(a) Urey and Miller
(b) Oparin and Haldane
(c) Watson and Crick
(d) None of the above

Answer:

(a) Urey and Miller

17. The organs present in two organisms indicate that they are derived from the same ancestor are:

(a) Analogous Organs
(b) Respiratory Organs
(c) Sense organs
(d) Homologous Organs

Answer:

(d) Homologous Organs

Explanation: The structures which are similar in their morphology, anatomy, and embryology but dissimilar in their functions are homologous organs.

18. Which of the following pair of organ is not homologous?

(a) Forelimbs in humans and lizard
(b) Forelimbs in lizard and frog
(c) Wings in butterfly and bat
(d) None of these

Answer:

(c) Wings in butterfly and bat

Explanation: Wings of a bat and a butterfly are considered as analogous organs.

19. Human teeth and elephant’s tusk are

(a) Analogous organs
(b) Vestigeal organs
(c) Homologous organs
(d) Rudimentary organs

Answer:

(c) Homologous organs

20. Evolution of wild cabbage is an example of:

(a) Artificial selection
(b) Natural selection
(c) Mutation
(d) Genetic drift

Answer:

(a) Artificial selection