CBSE Class 10 Science Heredity and Evolution MCQs Set A

Refer to CBSE Class 10 Science Heredity and Evolution MCQs Set A provided below available for download in Pdf. The MCQ Questions for Class 10 Science with answers are aligned as per the latest syllabus and exam pattern suggested by CBSE, NCERT and KVS. Chapter 9 Heredity and Evolution Class 10 MCQ are an important part of exams for Class 10 Science and if practiced properly can help you to improve your understanding and get higher marks. Refer to more Chapter-wise MCQs for CBSE Class 10 Science and also download more latest study material for all subjects

MCQ for Class 10 Science Chapter 9 Heredity and Evolution

Class 10 Science students should refer to the following multiple-choice questions with answers for Chapter 9 Heredity and Evolution in Class 10.

Chapter 9 Heredity and Evolution MCQ Questions Class 10 Science with Answers

Question. Which of the following plants did Mendel choose for his experiments?         
(a) Pisum sativum
(b) Hibiscus rosa-sinensis
(c) Mirabilis jalapa
(d) None of these
Answer : A

Question. Which of these is not a part of Darwinism?        
(a) Struggle for existence
(b) Overpopulation
(c) Natural selection
(d) Use and disuse of organs
Answer : D

Question. A section of DNA providing information for one protein is called—
(a) Nucleus
(b) Chromosomes
(c) Trait
(d) Gene
Answer : D

Question. Amongst which of the following animals, sex of the offsprings not genetically determined?
(a) Humans
(b) Snails
(c) Birds
(d) Dogs
Answer : B

Question. Which one of the following gives a survival advantage and thus alters frequency of inherited trait.
(i) natural selection
(ii) genetic drift
(a) only (i) (b) only (ii)
(c) both (i) and (ii)
(d) none of these
Answer : A

Question. Which of the following is a totally impossible outcome of Mendel’s Experiment (cross breeding pure bred tall and short pea plants)
(a) 3 tall 1 short plant
(b) 24 tall and 8 short plants
(c) 8 tall and 0 short plants
(d) 4 tall plants and 1 medium-height plant.
Answer : D

Question. Which of the following is controlled by genes?
(i) Weight of a person
(ii) Height of a person
(a) only 1 (i) (b) only (ii)
(c) both (i) and (ii)
(d) Sometimes (i) and sometimes (ii)
Answer : B

Question. What is the probability that a human progeny will be a boy?
(a) 50%
(b) 56%
(c) 47.34%
(d) It varies
Answer : A

Question. Homologous organs have
(a) Same structure, same function
(b) Different structure, different function
(c) Same structure, different function
(d) Same function, different structure
Answer : C

Question. 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

Question. Which one of the following is not one of the direct conclusions that can be drawm from Mendel’s experiment?
(a) Only one parental trait is expressed
(b) Two copies of each trait is inherited in sexually reproducing orgainsm
(c) For recessive trait to be expressed, both copies should be identical.
(d) Natural selection can alter frequency of an inherited trait.
Answer : D

Question. Which one is a possible progeny in F2 generation of pure bred tall plant with round seed and short plant with wrinkled seeds?
(a) Tall plant with round seeds
(b) Tall plant with wrinkled seeds
(c) Short plant with round seed
(d) All of the above
Answer : D

Question. Which one of the following is present in the nucleus?
(a) Gene
(b) DNA
(c) Chromosomes
(d) All of these
Answer : D

Question. Analogous organs have
(a) Same structure, same function
(b) Different structure, different function
(c) Same structure, different function
(d) Same function, different structure
Answer : D

Question. How can we know how old fossils are:
(a) Fossils found closer to surface are recent than those found much below
(b) Detecting ratios of isotopes
(c) Studying its characteristics
(d) All of these
Answer : D

Question. With whom we associate theory of evolution?
(a) Charles Darwin
(b) Mendel
(c) Stanley Miller
(d) Harold Urey
Answer : A

Question. The science dealing with heredity and variations is called         
(a) palaeontology
(b) genetics
(c) embryology
(d) phylogeny
Answer : B

Question. The Japanese are genetically the closest to        
(a) Indian schoolboys
(b) chimpanzees
(c) gorillas
(d) monkeys
Answer : A

Question. Which of the following is not one of Mendel’s laws?         
(a) Law of dominance
(b) Law of segregation
(c) Law of independent assortment
(d) Law of incomplete dominance
Answer : D

Question. The hereditary units are stretches of DNA called         
(a) chromosomes
(b) traits
(c) characters
(d) genes
Answer : D

Question. What happened when Mendel crossed two traits of a character (say, tallness and dwarfness) in pea plants?        
(a) Both the traits appeared in equal numbers in F1 .
(b) The offspring showed a blend of the two traits.
(c) Only the dominant trait appeared in F1 .
(d) Only the recessive trait appeared in F1 .
Answer : C

Question. The genetic constitution of an individual organism is called         
(a) its genotype
(b) its phenotype
(c) heredity
(d) gene
Answer : A

Question. The forelimbs of man, cat, bat and whale are        
(a) analogous organs
(b) homologous organs
(c) missing links
(d) fossils
Answer : B

Question. Mendel’s contribution to genetics was the         
(a) principle of mutation
(b) theory of natural selection
(c) law of independent assortment of factors
(d) principle of genetic recombination
Answer : C

Question. Surgically removing tails of mice over several generations do not yield mice without tails.This proves that
(a) Both a and b are correct
(b) Cutting tail does not cause genetic change. So it not inherited.
(c) Acquired characters during ones own life are not inherited.
(d) Neither a nor b is correct
Answer : A

Question. A random change in the frequency of alleles in any population over several generations due to errors in the gametes is called
(a) Genetic Drift
(b) Gene flow
(c) Genetic error
(d) Genetic crash
Answer : A

Question. 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

Question. The theory of Natural Selection was proposed by
(a) Darwin
(b) Lamarck
(c) Mendel
(d) Haldane
Answer : A

Question. The number of autosomes in a human body cell is
(a) 46
(b) 44
(c) 22
(d) 23
Answer : B

Question. Forelimb of frog, lizard, bird and man has some evolutionary relationship. This are
(a) Homologous organs
(b) Hand relationship
(c) Missing links
(d) Analogous organs
Answer : A

Question. If in human a sperm (22+Y) fertilizes an egg (22+X), the sex of the foetus shall be
(a) Male
(b) Female
(c) Either male or Female
(d) None of the answers
Answer : A

 

Question. The F2 phenotype ratio of a monohybrid cross studied by Mendel is
(a) 1:1
(b) 2:1
(c) 3:1
(d) 4:1
Answer : C

Question. If T is for tallness and t for dwarfness, what shall be the genotype of a tall pea plant according to Mendelism?
(a) TT
(b) Tt
(c) Either TT or Tt
(d) tt
Answer : C

Question. A Yellow and Round seeded pea plant has genotype YyRr. The gametes produced shall be
(a) Yy, Rr
(b) YR, yR, Yr, yr
(c) YR, yr
(d) Y, y, R, r
Answer : B

Question. If in human a sperm (22+Y) fertilizes an egg (22+X), the sex of the foetus shall be
(a) Male
(b) Female
(c) Either male or Female
(d) both
Answer : A

Question. Forelimb of frog, lizard, bird and man has some evolutionary relationship. This are
(a) Hand relationship
(b) Missing links
(c) Analogous organs
(d) Homologous organs
Answer : D

Question. The number of autosomes in a human body cell is
(a) 44
(b) 46
(c) 22
(d) 23
Answer : A

Question. The theory of Natural Selection was proposed by
(a) Lamarck
(b) Darwin
(c) Mendel
(d) Haldane
Answer : B

Question. 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

Question. Surgically removing tails of mice over several generations’ do not yield mice without tails.
This proves that

(a) Cutting tail does not cause genetic change. So it not inherited.
(b) Acquired characters during one’s own life are not inherited.
(c) Neither a nor b is correct
(d) Both a and b are correct
Answer : D

Question. A random change in the frequency of alleles in any population over several generations due to errors in the gametes is called
(a) Gene flow
(b) Genetic Drift
(c) Genetic error
(d) Genetic crash
Answer : B

Question. A Yellow and Round seeded pea plant has genotype YyRr. The gametes produced shall be
(a) YR, yR, Yr, yr
(b) Yy, Rr
(c) YR, yr
(d) Y, y, R, r
Answer : A

Question. If T is for tallness and t for dwarfness, what shall be the genotype of a tall pea plant according to Mendelism?
(a) Either TT or Tt
(b) TT
(c) Tt
(d) tt
Answer : A

Question. The F2 phenotype ratio of a monohybrid cross studied by Mendel is
(a) 3:1
(b) 1:1
(c) 2:1
(d) 4:1
Answer : A

Question. Mendel conducted his hybridisation experiment with :-
(a) Chick pea
(b) Pigeon pea
(c) Garden pea
(d) Wild pea
Answer : C

Question. Mendel studied seven contrasting characters for his breeding experiment with Pisum sativum, which of the following character did he not use :-
(a) Pod colour
(b) Pod shape
(c) Leaf shape
(d) Plant height
Answer : C

Question. The main reason of Mendel's successs in discovering the principles of inheritance was :-
(a) He considered each character separately
(b) He was lucky not to encounter linkage problem
(c) The plant was pure breeding
(d) All the above
Answer : D

Question. Mendel was lucky in the choice of the material of his experiments, among the following, which contributed, to his success ?
(a) He observed distinct inherited traits
(b) He qualitatively analysed his date
(c) He liked pea plants
(d) He considered only one character at one time
Answer : D

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MCQs for Chapter 9 Heredity and Evolution Science Class 10

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