Home ยป Heredity Class 10 Science MCQ With Solutions

Heredity Class 10 Science MCQ With Solutions

Update on: 02 Feb 2024, 09:53 AM

Understanding heredity is vital in biology as it influences the traits passed from one generation to the next. In Class 10 Science, students delve into genetics and inheritance, gaining insights into how genetic information is transmitted and the diversity in living organisms. With the recent changes in the exam pattern for the Class 10 Science syllabus, MCQs have become an important part of the Class 10 Science Board exam. Students can also use the CBSE Class 10 Sample Papers books for more practice. This article will feature multiple-choice questions on heredity in Class 10 Science, along with solutions, to aid students in testing their comprehension and knowledge in this subject area. Explore CBSE Chapter 8 Heredity with the help of the multiple-choice questions (MCQs) for theย  Class 10 Science.

Latest – How do Organisms Reproduce Class 10 Science MCQ With Solutions

CBSE Class 10 Chapter 8 Heredity MCQs

Check below the MCQ Questions for class 10 Science with answers and Clear your idea of Heredity.

Q.1. Refer to the given figure showing a cross between a tall and a short variety of a plant species.

 

 

 

 

 

 

The genotypic ratio of different traits that would result in F2 generation will be

(a) 1: 2 : 1 (b) 2: 2
(c) 1 : 3 (d) 3: 1

Answer
Answer 1

Practice More – CBSE Practice Papers Class 10 (2024) โ€“ Free PDF Download

Q.2. Which one of Mendel’s law states that when two homozygous individuals with one or more sets of contrasting characteristics are crossed, the characteristics which appear in F1 hybrids are dominant and those which do not are recessive?

(a) Law of segregation
(b) Law of dominance
(c) Law of independent assortment
(d) None of these

Answer
(b)

Q.3. In an experiment with pea plant, one tall plant was crossed with one dwarf plant. The resultant progeny obtained were 50% tall and 50% dwarf. What could be the genotype of parental plants?

(a) Tt, Tt (b) TT, tt
(c) Tt, tt (d) tt, tt

Answer

Answer 3

Also Check – CBSE Sample Papers Class 10 for 2024 Board Exams

Q.4. In an experiment, showing Mendelian inheritance, a tall pea plant with purple flowers was crossed with short pea plant with white flowers. All the progeny in the next generation was seen to have purple flowers but half of them were short. What will be the genetic makeup of tall parent?

(a) TTPP (b) TtPP
(c) TTpp (d) TtPp

Answer
(b)

Q.5. What determines the sex of a child?

(a) Chromosome content of the ovum
(b) Chromosome content of the sperm
(c) Number of days between ovulation and fertilisation
(d) Number of days between fertilisation and implantation

Answer
(b)

Q.6. The parental genotypes are X. The probability of having genotype in the F1 generation is

(a) 25% (b) 50%
(c) 75% (d) 0%

Answer
(b)

Q.7. The information source for making proteins in the cell is theย 

(a) chromosomeย  (b) DNA

(c) enzymeย  (d) nucleus

Answer
(b): DNA is the information source for making proteins in the cell.

Q.8. Who among the following is considered as the father of Genetics?

(a) Mendel
(b) Morgan
(c) Sutton
(d) Boveri

Answer
(a): Gregor. J. Mendel is known as Father of Genetics

CBSE Class 10 Resources – Important Formula Book For 10th Science

Q.9. A recessive homozygotes is crossed with a heterozygote of the same gene. What will be the phenotype of the F1 generation?

(a) All dominant (b) 75% dominant, 25% recessive
(c) 50% dominant, 50% recessive (d) 25% dominant, 50% heterozygous, 25% recessive

Answer
(c)

Q.10. What will be the percentage of purple-stemmed plants in the F2 generation, when the F1 generation resulted due to cross breeding of the green stemmed (GG) tomato plants with purple stemmed (gg) tomato plants, are self pollinated?

(a) 10%
(b) 25%
(c) 75%
(d) 50%

Answer
(b): When F1 generation of a cross between green stemmed tomato plants and purple stemmed tomato plants were self-pollinated then the F2 progeny can be obtained as follows:
Answer 10
Thus, the percentage of purple-stemmed plants in the F2 generation is 25%.

CBSE Class 10 Science Heredity MCQs – PDF Download

Answer-

Summary for NCERT Class 10 Science Chapter 8 โ€“ โ€œHeredityโ€

  • Variations arising during the process of reproduction can be inherited.
  • These variations may lead to increased survival of the individuals.
  • Sexually reproducing individuals have two copies of genes for the same trait. If the copies are not identical, the trait that gets expressed is called the dominant trait and the other is called the recessive trait.
  • Traits in one individual may be inherited separately, giving rise to new combinations of traits in the offspring of sexual reproduction.
  • Sex is determined by different factors in various species. In human beings, the sex of the child depends on whether the paternal chromosome is X (for girls) or Y (for boys).

Best Reference Books for Class 10 Science

 

We hope the MCQs for the CBSE Class 10 Science Chapter 8 on Heredity are helpful for your board exam preparation.

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