Explore how the process by which the features of an organism are passed on from one generation to another by the help of CBSE Class 10 Science MCQ Questions of Heredity and Evolution.
Check beneath the MCQ Questions for class 10 Science with Answer Clear your idea of Heredity and Evolution.
Practice Class 10 Science MCQ Questions 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
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
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
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.
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.
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.
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
8. What is the ancient name for all human beings?
(a) Monkey
(b) Chimpanzee
(c) Homo sapiens
(d) Invertebrates
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
10. The exchange in genetic material takes place in _____.
(a) vegetative propagation
(b) Asexual reproduction
(c) sexual reproduction
(d) budding
11. ___is used for studying human evolution.
(a) Excavating
(b) Time dating
(c) Determining DNA sequence
(d) All
12. Round and yellow seed colour is:
(a) incomplete dominance
(b) recessive
(c) hybrid
(d) dominant
13. Mendel performed his famous hybridization experiments on:
(a) garden pea
(b) Hibiscus
(c) rose
(d) cucurbita
14. The pairs of characters used by Mendel during his experiments were:
(a) ten
(b) six
(c) seven
(d) two
15. The theory of Natural Selection was proposed by
(a) Lamarck
(b) Darwin
(c) Mendel
(d) Haldane
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
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
18. Which of the following pair of organs 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
19. Human teeth and elephant’s tusk are
(a) Analogous organs
(b) Vestigeal organs
(c) Homologous organs
(d) Rudimentary organs
20. Evolution of wild cabbage is an example of:
(a) Artificial selection
(b) Natural selection
(c) Mutation
(d) Genetic drift
Answer Key
1. (a) Girls only
2. (b) 23
Explanation: The sex gametes are always haploid. They have 23 chromosomes.
3. (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. (c) A is true but R is false.
5. (а) through father’s sex chromosomes.
6. (b) Punctuated equilibrium
7. (b) Snub nose
Explanation: A dominant inherent character can only be inherited by the children.
8. (c) Homo sapiens
Explanation: The scientific name of human is Homo sapiens.
9. (b) Y chromosome in zygote
10. (c) sexual reproduction
11. (d) All
12. (d) dominant
13. (a) garden pea
14. (c) seven
15. (b) Darwin
16. (a) Urey and Miller
17. (d) Homologous Organs
Explanation: The structures which are similar in their morphology, anatomy, and embryology but dissimilar in their functions are homologous organs.
18. (c) Wings in butterfly and bat
Explanation: Wings of a bat and a butterfly are considered as analogous organs.
19. (c) Homologous organs
20. (a) Artificial selection
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