WILLER ACADEMY

Class 10 Science Chapter 9 Quiz

Heredity and Evolution

1. Mendel conducted his famous breeding experiments by working on:
a) Drosophila b) Escherichia Coli c) Pisum Sativum d) All of these

2. Which section of DNA provides information for one protein?
a) Nucleus b) Chromosome c) Trait d) Gene

3. Which of the following is an example of genetic variation?
a) One person has a scar, but his friend doesn’t b) One person is older than the other c) Reeta eats meat, but her sister Geeta is a vegetarian d) Two children have different eye colour

4. Human teeth and elephant’s tusk are:
a) Analogous organs b) Vestigial organs c) Homologous organs d) Rudimentary organs

5. Which of the following is true with respect to sex chromosomes in humans?
a) Females have XX, males have XY b) Females have XY, males have XX c) Both have XX d) Both have XY

6. What is heredity? (2 marks)

7. Define acquired and inherited traits with one example each. (2 marks)

8. State Mendel’s law of segregation with an example. (3 marks)

9. What is natural selection? Give an example from nature. (3 marks)

10.
a) Describe sex determination in human beings with a diagram.
b) State two evidences that support evolution. (5 marks)

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