Genetics Class 10 ICSE MCQ. We covered all the Genetics Class 10 ICSE MCQ in this post for free so that you can practice well for the exam.
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MCQ on Genetics for Class 10 ICSE Students
A child receives a tall beautiful plant as a birthday gift from his father with a quiz. The father asked her how she would verify whether this tall plant was the progeny of both the tall parents or one tall and one short parent plant. She could verify this through
(a) cross-pollination
(b) self-pollination
(c) tissue culture
(d) negative propagation
Option b – self-pollination
The process of selecting individuals with desired characteristics by man is called
(a) Hybridization
(b) Reproduction
(c) Artificial selection
(d) Natural selection
Option c – Artificial selection
Which one of the following pairs are homologous organs?
(a) Forelimbs of a bird and wings of a bat.
(b) Wings of a bird and wings of a butterfly.
(c) Pectoral fins of a fish and forelimbs of a horse.
(d) Wings of a bat and wings of a cockroach.
Option a – Forelimbs of a bird and wings of a bat
The theory of the evolution of species by natural selection was given by
(a) Mendel
(b) Darwin
(c) Lamarck
(d) Weismann
Option b – Darwin
A cross between a tall pea-plant (TT) and a short pea plant (tt) resulted in progenies that were all tall plants because
(a) tallness is the recessive trait.
(b) shortness is the dominant trait.
(c) height of pea-plant is not governed by gene T or t.
(d) tallness is the dominant trait.
Option b – shortness is the dominant trait
The number of pairs of sex chromosomes in the zygote of a human being is
(a) 2
(b) 3
(c) 1
(d) 4
Option c – 1
Which of the following cause(s) variation in the genetic material of progeny? 1. Sexual reproduction 2. Asexual reproduction 3. Mutations 4. Epigenetic changes Select the correct answer using the code given below.
(a) 2 only
(b) 1, 2 and 3
(c) 1, 3 and 4
(d) 1 and 3 only
Option c – 1, 3 and 4
Due to the discovery of one of the following in 1980, the evolution was termed an RNA world :
(a) RNA is present in some viruses as genetic material
(b) RNA has enzymatic properties
(c) RNA is found in all living cells
(d) RNA is found to be associated with protein synthesis
Option b – RNA has enzymatic properties
Which one of the following statements explains the higher mutation rate and faster evolution found in RNA viruses?
(a) RNA is relatively unstable compared to DNA.
(b) The virus can multiply only within the living cell of a host.
(c) Metabolic processes are absent in viruses.
(d) The virus can remain latent for a long period.
Option a – RNA is relatively unstable compared to DNA
Which one of the following statements regarding histone proteins is correct?
(a) Histones are proteins that are present in the mitochondrial membranes.
(b) Histones are proteins that are present in the nucleus in association with DNA
(c) Histones are proteins associated with lipids in the cytosol.
(d) Histones are proteins associated with carbohydrates in the cytosol.
Option b – Histones are proteins that are present in the nucleus in association with DNA
The human species has genetic roots in
(a) Australia
(b) Africa
(c) America
(d) Indonesia
Option b – Africa
Which of the following is the ancestor of ‘Broccoli”?
(a) Cabbage
(b) Cauliflower
(c) Wild cabbage
(d) Kale
Option c – Wild cabbage
The process of evolution of a species whereby characteristics that help individual organisms to survive and reproduce are passed on to their offspring and those characteristics which do not help is not passed on is called
(a) Artificial selection
(b) Speciation
(c) Hybridization
(d) Natural selection
Option d – Natural selection
Identify the two organisms which are now extinct and are studied from their fossils.
(a) white tiger and sparrow
(b) dinosaur and fish (Knightia)
(c) ammonite and a white tiger
(d) trilobite and white tiger
Option b – dinosaur and fish (Knightia)
Which of the following decides the sex of the child?
(a) the male gamete, i.e., sperm
(b) female gamete, i.e., ovum
(c) both sperm and ovum
(d) mother
Option a – the male gamete, i.e., sperm
Pure-bred pea plant A is crossed with pure-bred pea plant B. It is found that the plants which look like A do not appear in the Fj generation but re-emerge in the F2 generation. Which of the plants A and B are tall and dwarf?
(a) A is tall and B is a dwarf.
(b) A is tall and B are also tall.
(c) A are dwarf and B is also dwarf
(d) A are dwarf and B is tall
Option d – A are dwarf and B is tall
A zygote that has an X-chromosome inherited from the father will develop into an
(a) girl
(b) boy
(c) either boy or girl
(d) X-chromosome does not influence the sex of a child.
Option a – girl
A man with blood group A marries a woman having blood group O. What will be the blood group of the child?
(a) O only
(b) A only
(c) AB
(d) Equal chance of acquiring blood group A or blood group O.
Option d – Equal chance of acquiring blood group A or blood group O
What does the progeny of a tall plant with round seeds and a short plant with wrinkled seeds look like?
(a) All are tall with round seeds.
(b) All are short with round seeds.
(c) All are tall with wrinkled seeds.
(d) All are short with wrinkled seeds.
Option a – All are tall with round seeds
If a round, green seeded pea-plant (RRyy) is crossed with a wrinkled yellow seeded pea- plant (rrYY), the seeds produced in the F1 generation are
(a) round and green
(b) round and yellow
(c) wrinkled and green
(d) wrinkled and yellow
Option b – round and yellow
Consider the following statements: Assertion (A): In humans, the female sex is determined by XX chromosomes. Reason (R): Male sex is determined by YY chromosomes. Codes :
(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true, but R is not the correct explanation of A.
(c) A is true, but R is false.
(d) A is false, but R is true.
Option c – A is true, but R is false
Consider the following statements and select the correct answer from the codes given below: 1. In DNA, the base adenine, guanine, thymine, and cytosine are found. 2. The nucleus contains all the DNAs of a cell. 3. In RNA, thymine is replaced with uracil. 4. RNA is mainly found to be in the cytoplasm. Codes :
(a) 1, 2 and 3
(b) 2 and 3 only
(c) 1 and 4 only
(d) 1, 2, 3 and 4
Option d – 1, 2, 3 and 4
Consider the following statements: 1. Human beings have 23 pairs of chromosomes. 2. Sex chromosome in human males is named XX. 3. Chromosomes are best seen in metaphase. Which of the statements given above are false about chromosomes?
(a) 1 and 2
(b) 2 only
(c) 1, 2 and 3
(d) None of these
Option b – 2 only
Consider the following statements about gene 1. Word ‘Gene’ was given by Johanssen. 2. Genes are situated on chromosomes. 3. Genes located at a different locus and having different expressions are multiple alleles. Which of the statements given above are true?
(a) 1 and 2
(b) 2 and 3
(c) 1 and 3
(d) 1, 2 and 3
Option d – 1, 2 and 3
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