30
Minutes
58
Questions
1 / -0
Marking
Q1. The sequence of gradual changes which takes place in the primitive organisms over millions of years in which new species are produced is known as
Evolution
Heredity
Generation
Inheritance
Q2. Human teeth and elephant’s tusk are
Analogous organs
Vestigeal organs
Homologous organs
Rudimentary organs
Q3. Heredity And Evolution Class 10 MCQ Question 1. Process of selecting individuals with desired characters by man is called
Hybridization
Reproduction
Artificial selection
Natural selection
Q4. 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:
60
23
22
40
Q5. Independent inheritance of two separate traits, shape and colour of seeds in Mendel’s cross on pea plants resulted in a observable ratio of:
3 : 1
9 : 3 : 3 : 1
1 : 1
9 : 4 : 2 : 1
Q6. Which one of the following pairs are homologous organs?
Forelimbs of a bird and wings of a bat.
Wings of a bird and wings of a butterfly.
Pectoral fins of a fish and forelimbs of a horse.
Wings of a bat and wings of a cockroach.
Q7. In the human blood grouping, the four basic blood types are type A, type B, type AB, and type O. They are:
Simple dominant and recessive traits
Co-dominant traits
Recessive traits
Inherited traits
Q8. Which of these is not a vestigial organ in human beings?
Appendix
Wisdom tooth
Nictitating membrane
Gall bladder
Q9. The theory of evolution of species by natural selection was given by
Mendel
Darwin
Lamarck
Weismann
Q10. A pregnant woman has an equal chance of her baby being blood group A or blood group AB. Which one of the following shows the possible genotypes of the woman and the father of her child?
IA IA and IB IO
IA IB and IB IO
IA IO and IB IO
IO IB and IA IO
Q11. Evolution of wild cabbage is an example of:
Artificial selection
Natural selection
Mutation
Genetic drift
Q12. A cross between a tall pea-plant (TT) and a short pea-plant (tt) resulted in progenies that were all tall plants because
tallness is the recessive trait.
shortness is the dominant trait.
height of pea-plant is not governed by gene T or t.
tallness is the dominant trait.
Q13. What will be the number of chromosomes present in each gamete produced by the plants if the palisade cells of a species of plant contain 28 chromosomes in all?
56
28
14
4
Q14. The modern day Human species has evolved from its earliest ancestors who lived in:
Asia
Australia
Africa
China
Q15. The number of pairs of sex chromosomes in the zygote of a human being is
2
3
1
4
...and 43 more challenging questions available in the interactive simulator.