MCQ Questions For Class 10 Science Chapter 9 Heredity And Evolution

Students can refer to the following Heredity And Evolution Class 10 MCQ Questions with Answers provided below based on the latest curriculum and examination pattern issued by CBSE and NCERT. Our teachers have provided here a collection of Heredity And Evolution Class 10 MCQ Questions covering all topics in your textbook so that students can assess themselves on all important topics and thoroughly prepare for their exams

Heredity And Evolution Class 10 MCQ Questions with Answers

We have provided below Heredity And Evolution Class 10 MCQ Questions with answers which will help the students to go through the entire syllabus and practice multiple choice questions provided here with solutions. As Heredity And Evolution MCQs for Class 10 Science pdf download can be really scoring for students, you should go through all problems provided below so that you are able to get more marks in your exams.

Question. A cross between a tall plant (TT) and short plant (tt) resulted in progeny that were all tall plants as:   
(a) Tallness is the dominant trait
(b) Shortness is the dominant trait
(c) Tallness is the recessive trait
(d) Height of plant is not governed by gene t or t

Question. Which of the following is not a direct conclusion that can be drawn from Mendels experiment? 
(a) Only one parental trait is expressed.
(b) Two copies of each trait are inherited in sexually reproducing organism.
(c) For recessive trait to be expressed, both copies should be identical.
(d) Natural selection can alter frequency of an inherited trait.

Question. Name the organ analogous to the wings of birds.   
(a) forelimb of human
(b) wings of insect
(c) fore-leg of horse
(d) none of these

Question. Exchange of genetic material takes place in:   
(a) Vegetative reproduction
(b) Asexual reproduction
(c) Sexual reproduction
(d) Budding

Question. In human males, all the chromosomes are paired perfectly except one. These unpaired chromosomes are: 
(i) Large chromosome
(ii) Small chromosome
(iii) Y chromosome
(iv) X chromosome
(a) (i) and (ii)
(b) (iii) and (ii)
(c) (iii) and (iv)
(d) (ii) and (iv)

Question. Which of the following statement is incorrect?   
(a) For every hormone there is a gene.
(b) For every protein there is a gene.
(c) For production of every enzyme there is a gene.
(d) For every molecule of fat there is a gene. 

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

Question. From the list given below, select the character which can be acquired but not inherited:     
(a) Colour of eyes
(b) Colour of skin
(c) Size of body
(d) Nature of hair

Question. The two versions of a trait (character) which are brought in by the male and female gametes are situated on:     
(a) Copies of the same chromosome
(b) Two different chromosomes
(c) Sex chromosomes
(d) Any chromosome

Question. The maleness of a child is determined by: 
(a) The X chromosome in the zygote
(b) The Y chromosome in the zygote
(c) The cytoplasm of the germ cell which determines the sex
(d) Sex is determined by chance

Question. A zygote which has an X chromosome inherited from the father will develop into a:
(a) Boy
(b) Girl
(c) X chromosome does not determine the sex of a child
(d) Either boy or girl

Question. Select the incorrect statement:                   
(a) The frequency of certain genes in a population change over several generations resulting in evolution.
(b) The reduction in the weight of an organism due to starvation is genetically controlled.
(c) Low weight parents can have heavy weight progeny.
(d) Traits which are not inherited over generations do not cause evolution.

Question. A basket of vegetables contains carrot, potato, radish and tomato. Which of them represent the correct homologous structures?           
(a) Carrot and potato
(b) Carrot and tomato
(c) Radish and carrot
(d) Radish and potato

Question. Select the correct statement:           
(a) The tendril of a pea plant and the phylloclade of Opuntia are homologous.
(b) The tendril of a pea plant and the phylloclade of Opuntia are analogous.
(c) The wings of birds and the limbs of lizards are analogous.
(d) The wings of bird and the wings of bats are homologous.

Question. Which of the following rediscovered the Mendel’s work?
(a) Correns
(b) De Vries
(c) Tschermark
(d) All of these

Question. Which of the following is Heterozygous?
(a) TTRR
(b) ttrr
(c) TT
(d) Tt

Question. Guanine pairs with:
(a) Adenine
(b) Cytokine
(c) Thymine
(d) None of the above

Question. Mendel’s law of segregation is based on separation of alleles during:
(a) Gametes formation
(b) Seed formation
(c) Pollination
(d) Embryonic development

Question. Sudden inheritable change is called:
(a) Recombination
(b) Mutation
(c) National selection
(d) Segregation

Question. The genotype of offspring formed from Tt × tt will be –
(a) TT and tt
(b) Tt and tt
(c) only tt
(d) only TT

Question. An experiment to prove that organic compounds were the basis of life, was performed by:
(a) Oparin
(b) Miller
(c) Melvin
(d) Fox

Question. The idea of “Survival of fittest” was given by:
(a) Darwin
(b) Herbert Spencer
(c) Germplasm RNA
(d) Somatic DNA

Question. When one gene pair hides the effect of the other unit, this phenomenon is referred as –
(a) Dominance
(b) Mutation
(c) Epistasis
(d) None of these

Question. If the fossil of an organism is found in the deeper layers of earth, then we can predict that:       
(a) The extinction of the organism occurred recently.
(b) The extinction of the organism occurred thousands of years ago.
(c) The fossil position in the layers of Earth is not related to its time of extinction.
(d) The time of extinction cannot be determined.

Question. A trait in an organism is influenced by:                 
(a) Paternal DNA only
(b) Maternal DNA only
(c) Both maternal and paternal DNA
(d) Neither paternal nor maternal DNA

Question. Select the group which shares the maximum number of common characters:             
(a) Two individuals of a species
(b) Two species of a genus
(c) Two genera of a family
(d) Two genera of two families

Question. According to the evolutionary theory, for- mation of a new species is generally due to:       
(a) Sudden creation by nature.
(b) Accumulation of variations over several generations.
(c) Clones formed during asexual reproduction.
(d) Movement of individuals from one habitat to another.

Question. Select the statements that describe the characteristics of genes:     
(i) Genes are specific sequence of bases in a DNA molecule.
(ii) A gene does not code for proteins.
(iii) In individuals of a given species, a specific gene is located on a particular chromosome.
(iv) Each chromosome has only one gene.
(a) (i) and (ii)
(b) (i) and (iii)
(c) (i) and (iv)
(d) (iii) and (iv)

Question. The number of pair(s) of sex chromosomes in the zygote of humans is:   
(a) One
(b) Two
(c) Three
(d) Four

Question. Some dinosaurs had feathers although they could not fly but birds have feathers that help them to fly. In the context of evolution this means that: 
(a) Reptiles have evolved from birds.
(b) There is no evolutionary connection between reptiles and birds.
(c) Feathers are homologous structures in both the organisms.
(d) Birds have evolved from reptiles

Question. In peas, a pure tall plant (TT) is crossed with a pure short plant (tt). The ratio of pure tall plants to pure short plants in F2 generation will be:   
(a) 1 : 3
(b) 3 : 1
(c) 1 : 1
(d) 2 : 1

Question. If a round, green-seeded pea plant (RR yy) is crossed with wrinkled, yellow seeded pea lant, (rr YY), the seeds production in F1 generation are: 
(a) Round and yellow
(b) Round and green
(c) Wrinkled and green
(d) Wrinkled and yellow

Question. In human males all the chromosomes are paired perfectly except one. This/these unpaired chromosome is/are:     
(i) Large chromosome
(ii) Small chromosome
(iii) Y-chromosome
(iv) X-chromosome
(a) (i) and (ii)
(b) (iii) only
(c) (iii) and (iv)
(d) (ii) and (iv)

Question. Two pink coloured flowers on crossing resulted in 1 red, 2 pink and 1 white flower progeny. The nature of the cross will be:       
(a) Double fertilization
(b) Self pollination
(c) Cross fertilization
(d) No fertilization

Fill in the Blanks :

Question. The first organisms were ……………. and not autotrophs.

Question. Forelimbs of frog and lizard are the example of the ……………. organs.

Question. The study of fossils, a branch of biology called ……….. was founded by Goerges Cuiver.

Question. The age of fossil is usually determined by analysing the ………… present in the rock from which fossil is recovered.

Question. According to modern concept, Mendel’s factor is called a …………..

Question. The phenotypic ratio in dihybrid cross is ……………..

Question. Two types of nucleic acids are DNA and ……………. .

Question. The traits which express themselves in F1 generation are called …………….

True / False :

Question. A cross between a true tall and pure dwarf pea plant resulted in production of all tall plants because tallness is the dominant trait.

Question. New species may be formed if DNA undergoes significant changes or chromosome number changes in the gametes.

Question. Both the parents contribute DNA equally to the offspring.

Question. Charles Darwin discovered the law of independent assortment.

Question. Mouth parts of insects show divergent evolution.

Case study question

In some animals, the temperature at which fertilised eggs are kept determines whether the animal developing in the egg will be male or female. In other animals, such as snails, individuals can change sex, that is sex is not genetically determined. In human beings, sex of individuals is largely genetically determined. All chromosomes in human beings are not paired. We have 22 pairs and one pair of sex chromosomes which is odd and not always a perfect pair.

Question. Which pair of chromosomes are present in Male
(a) XX
(b) YY
(c) XY
(d) XXY

Question. Which pair of chromosomes are present in female?
(a) XX
(b) YY
(c) XY
(d) XXY

Question. Who is responsible for birth of male child?
(a) Father
(b) Mother
(c) Father only in first pregnancy.
(d) Mother only in first pregnancy

Question. How many pairs of chromosomes are called autosomes?
(a) 23
(b) 22
(c) 21
(d) 20

Question. Which of the following statement is true?
(a) Men have short sized X chromosome
(b) Men have one long sized Y chromosome
(c) Men have normal sized Y chromosome
(d) Men have one short sized Y chromosome

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