RBSE Class 10 Science Biology Heredity MCQs (Objectives) are very important for students preparing for Board Exams. These MCQS have been prepared on the basis of important topics of Heredity.
Class 10 Science Chapter Heredity Objectives
Choose the correct answer:
1. Dissimilarity shown by members or offsprings is called :
(a) Heredity
(b) Variation
(c) Mutation
(d) Fusion
Correct answer – (b)- Heredity
2. Mendel work on :
(a) Wild pea
(b) Edible pea
(c) Garden pea
(d) All the above
Correct answer – (c)- Garden pea
3. When pure tall and pure dwarf pea plants are crossed, in F2 generation TT : Tt : tt: is :
(a) 1:1:1
(b) 1:2:1
(c) 1:1:2
(d) 2:1:1
Correct answer – (b)- 1:2:1
4. X and Y sex chromosomes are present in male:
(a) Grass hopper
(b) Human being
(c) Drosophilla
(d) All the above
Correct answer – (d)- All the above
5. In a turtle the high incubation temperature results in the development of :
(a) Male progeny
(b) Female progeny
(c) Male and Female progeny both
(d) No effect of temperature
Correct answer – (b)- Female progeny
6. In lizard high high incubation temperature results in:
(a) Male progeny
(b) Female progeny
(c) Male and Female progeny both
(d) No effect of temperature
Correct answer – (a)- Male progeny
7. Which is the example of analogous organs:
(a) Forelimbs of man and wings of bird
(b) Wings of birds and wings of insects
(c) Vermiform appendix and nictitating membrane
(d) Archaeopteryx and Balnaoglossus
Correct answer – (b)- Wings of birds and wings of insects
8. Which is the example of homologous organs :
(a) Forelimbs of man andwings of bird
(b) Wings of birds andwings of insects
(c) Vermiform appendixand nictitating membrane
(d) Archaeopteryx andBalnao glossus
Correct answer – (a)- Forelimbs of man and wings of bird
9. Which is the example of vestigial organs :
(a) Forelimbs of man and wings of bird
(b) Wings of birds and wings of insects
(c) Vermiform appendixand nictitating membrane
(d) Archaeopteryx and Balnao glossus
Correct answer – (c)- Vermiform appendix and nictitating membrane
10. Who proposed the theory of ‘natural selection’:
(a) Lamarck
(b) Darwin
(c) Weismann
(d) De Vries
Correct answer – (b)- Darwin
11. Number of sex chromosomes in human beings is :
(a) 46
(b) 64
(c) 2
(d) 10
Correct answer – (c)- 2
12.‘Life originated from non-living matter’ was suggested by:
(a) Pasteur
(b) Haldane
(c) Lamarck
(d) Darwin
Correct answer – (b)- Haldane
13. Variation arises due to :
(a) Mutation
(b) Recombination
(c) Chromosomal aberrations
(d) All the above
Correct answer – (d)- All the above
14. Exchange of genetic material takes place in
(a) asexual reproduction
(b) vegetative reproduction
(c) sexual reproduction
(d) binary fission
Correct answer – (c)- sexual reproduction
15 ..A red flowered plant crossed with white flowered plant. In F1 generation, all flowers were red. It shows that
(a) red colour is recessive
(b) red colour is dominant
(c) white colour is dominant
(d) colour is not governed by gene
Correct answer – (b)- red colour is dominant
16. If a round, green seeded pea plant (RRyy) is crossed with wrinkled, yellow seeded pea plant (rrYY), the seeds produced in F1 generation are
(a) wrinkled and green
(b) round and green
(c) wrinkled and yellow
(d) round and yellow
Correct answer – (d)- round and yellow
17. A sperm having X-chromosome fertilizes an oval, then it will develop into a
(a) female child
(b) male child
(c) X-chromosome does not determine sex of child
(d) male of female child, it is a chance
Correct answer – (a) – female child
18. A trait in an organism is influenced by
(a) maternal DNA
(b) paternal DNA
(c) both maternal and paternal DNA
(d)neither maternal nor paternal DNA
Correct answer – (c) – both maternal and paternal DNA
19.Potato,carrot, radish and tomato are presents in a basket, which of them present
correct homologous structures
(a) radish and carrot
(b) potato and carrot
(c) carrot and tomato
(d) potato and radish
Correct answer – (a) – radish and carrot
20. Which character is acquired, not inherited
(a) size of body
(b) nature of hair
(c) colour of skin
(d) colour of eye
Correct answer – (a)- size of body
21.The group which shares maximum number of common characters
(a) two genera of a family
(b) two species of a genus
(c) two individuals of a species
(d) two genera of two families
Correct answer – (c) – two individuals of a species
22. What is heredity?
(a) Study of plants
(b) Transmission of traits from parent to offsprings
(c)Study of environment
(d) Cell division
Correct answer – (b)- Transmission of traits from parent to offspring
23. Variations arise during reproduction mainly due to :
(a) Photosynthesis
(b) DNA copying errors
(c) Respiration
(d) Digestion
Correct answer – (b)- DNA copying errors
24.Which type of reproduction produces more variations?
(a)Asexual reproduction
(b)Sexual reproduction
(c)Vegetative reproduction
(d)None of these
Correct answer – (b)- Sexual reproduction
25. Who is known as the father of genetics?
(a)Gregor Johnn Medel
(b) Charles Darwin
(c) Lamarck
(d) Watson
Correct answer – (a)- Gregor Johnn Medel
26.The passing of traits form parents to offspring is called:
(a) Evolution
(b)Mutation
(c)Heredity
(d)Adaptation
Correct answer – (c)- Heredity
27. A gene is:
(a)A protein
(b) A DNA segment controlling a trait
(c) A chromosome
(d) A cell
Correct answer – (b)- A DNA segment controlling a trait
28. The observable character of an organism is called:
(a)Trait
(b)Chromosome
(c)Gene
(d)DNA
Correct answer – (a)- Trait
29. Which traitappears in the F1 generation of Mendel’s monohybrid cross?
(a)Recessive trait
(b)Dominant trait
(c) Both
(d) None
Correct answer – (b)- Dominant trait
30. The ratio of tall to short plants in F2 generation is:
(a)1:1
(b)2:1
(c)3:1
(d)9:3
Correct answer – (c)- 3:1
31. If both alleles are same, the condition is called:
(a) Homozygous
(b) Heterozygous
(c) Mutation
(d) Hybrid
Correct answer – (a)- Homozygous
32. Tallness in pea plants is represented by:
(a)T
(b)t
(c)R
(d)r
Correct answer – (a)-T
33. DNA stand for:
(a)Deoxyribonucleic acid
(b)Dynamic nuclear acid
(c) Deoxynucleic acid
(d)Double nucleic acid
Correct answer – (a)- Deoxyribonucleic acid