MCQ Questions for Class 10 Science Chapter 9 Heredity and Evolution with Answers
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1. A zygote which has an X-chromosome inherited from the father will develop into a
2. A man with blood group A marries a woman having blood group O. What will be the blood group of the child?
3. What does the progeny of a tall plant with round seeds and a short plant with wrinkled seeds look like?
4. If a round, green seeded pea-plant (RRyy) is crossed with a wrinkled yellow seeded pea- plant (rrYY), the seeds produced in F1 generation are
5. The human species has genetic roots in
6. Which of the following is the ancestor of ‘Broccoli’?
7. Identify the two organisms which are now extinct and are studied from their fossils.
8. Which of the following decides the sex of the child?
9. In humans if gene B gives brown eyes and gene b gives blue eyes, what will be the colour of eyes of the persons having combinations (i) Bb and (ii) BB?
10. A cross between two individuals results in a ratio of 9 : 3 : 3 :1 for four possible phenotypes of progeny. This is an example of a
11. Which of the following characters can be acquired but not inherited?
12. Those organs which have the same basic structure but different functions are called
13. Human teeth and elephant’s tusk are
14. Independent inheritance of two separate traits, shape and colour of seeds in Mendel’s cross on pea plants resulted in a observable ratio of:
15. Which of these is not a vestigial organ in human beings?
16. Evolution of wild cabbage is an example of:
17. The modern day Human species has evolved from its earliest ancestors who lived in:
18. Two pink coloured flowers on crossing resulted in 1 red, 2 pink and 1 white flower progeny. The nature of the cross will be
19. Which of the following statement is incorrect?
20. If a round, green seeded pea plant (RR yy) is crossed with wrinkled, yellow seeded pea plant (rr YY), the seeds produced in F1 generation are
21. A zygote which has an X-chromosome inherited from the father will develop into a
22. A basket of vegetables contains carrot, potato, radish and tomato. Which of them represent the correct homologous structures?
23. A trait in an organism is influenced by
24. Select the group which shares maximum number of common characters.
25. According to the evolutionary theory, formation of a new species is generally due to
26. In peas, a pure tall plant (TT) is crossed with a short plant (tt). The ratio of pure tall plants to short plants in F2 is
27. Some dinosaurs had feathers although they could not fly but birds have feathers that help them to fly. In the context of evolution this means that
28. Process of selecting individuals with desired characters by man is called
29. Which one of the following pairs are homologous organs?
30. The theory of evolution of species by natural selection was given by
31. A cross between a tall pea-plant (TT) and a short pea-plant (tt) resulted in progenies that were all tall plants because
32. The number of pairs of sex chromosomes in the zygote of a human being is
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