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

MCQ | Class 10 Science Chapter 9 | Heredity and Evolution Set A

Check the below NCERT MCQ Questions for Class 10 Science Chapter 9 Heredity and Evolution with Answers Pdf free download. MCQ Questions for Class 10 Science with Answers were prepared based on the latest exam pattern. We have Provided Heredity and Evolution Class 10 Science MCQs Questions with Answers to help students understand the concept very well.

Objective Question | Science Class 10 Chapter 9

NCERT Solutions Class 10 Science
Book:	National Council of Educational Research and Training (NCERT)
Board:	Central Board of Secondary Education (CBSE)
Class:	10th
Subject:	Science
Chapter:	9
Chapters Name:	Heredity and Evolution
Medium:	English

Class 10th Science Book | Objective Type Questions

You can refer to NCERT Solutions for Class 10 Science Chapter 9 Heredity and Evolution to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Heredity and Evolution | Class 10 Science | NCERT Solutions

Q1.	Assertion: Specialization is the reproductive isolation amongst once interbreeding population. Reason: Genetic drift, Natural selection and Severe DNA change can cause specialization.
	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.

Ans: Both A and R are true and R is the correct explanation of A.

Q2.	Assertion: Acquired trait cannot be passed on from one generation to next generation. Reason: Inaccuracy during DNA copying of acquired trait is minimum.
	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.

Ans: A is true but R is false.

Q3.	Human offspring’s sex is determined
	A. through father’s sex chromosomes.
	B. through mother’s sex chromosomes.
	C. by hormones.
	D. by enzymes.

Ans: through father’s sex chromosomes.

Q4.	Wing of a bird and wing of an insect are
	A. Homologous organs
	B. analogous organs
	C. vestigial organ
	D. both (a) and (b)

Ans: Homologous organs

Q5.	Which concept was not included in Charles Darwin’s theory of Natural Selection?
	A. Struggle for existence
	B. Punctuated equilibrium
	C. Survival of the fittest
	D. Overproduction of offspring.

Ans: Punctuated equilibrium

Q6.	The remaps (or impressions) of dead animals or plant? that lived in the remote past are known as
	A. extinct species
	B. fossils
	C. naturally selected species
	D. none of the above

Ans: fossils

Q7.	Natural selection is called ‘survival of the fittest’. Which of the following statements best describes an organism?
	A. How strong it is compared to other individuals of the same species.
	B. How much food and resources it is able to gather for its offspring.
	C. The ability to adapt to the environment in the niche it occupies.
	D. The number of fertile offspring it has.

Ans: The ability to adapt to the environment in the niche it occupies.

Q8.	The process by which new species develop from the existing species is known as
	A. Evolution
	B. Natural selection
	C. Artificial selection
	D. Speciation

Ans: Speciation

Q9.	The more characteristics two species have in common :
	A. More closely they are related and more recently they had a common ancestors.
	B. More distantly they are related and more recently they have common ancestors.
	C. More closely they are related and more distantly they have common ancestors.
	D. More distantly they are related and more distantly they have common ancestors.

Ans: More closely they are related and more recently they had a common ancestors.

Q10.	A cross between two individuals results in a ratio of 9 : 3 : 3 :1 for four possible phenotypes of progeny. This is an example of a
	A. Monohybrid cross
	B. Dihybrid cross
	C. Test cross
	D. F1 generation

Ans: Dihybrid cross

Q11.	Two pink colored flowers on crossing results in 1 red, 2 pink and 1 white flower progeny. The nature of the cross is-
	A. cross fertilization
	B. self pollination
	C. double fertilization
	D. no fertilization

Ans: cross fertilization

Q12.	Differences between organisms in a species are described as variation. Which of the following would you describe as continuous variation?
	A. Hair colour
	B. Eye colour
	C. Weight
	D. Sex

Ans: Weight

Q13.	Those organs which have the same basic structure but different functions are called
	A. Vestigial organs
	B. Analogous organs
	C. Homologous organs
	D. None of these

Ans: Homologous organs

Q14.	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.

Ans: Equal chance of acquiring blood group A or blood group O.

Q15.	The concept of origin of species by natural selection was given by.
	A. lamarck
	B. weismann
	C. Darwin
	D. Linnaeus

Ans: Darwin

Q16.	Which of the following is not correct-
	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.

Ans: For every protein there is a gene.

Q17.	Which of the following is the ancestor of ‘Broccoli’?
	A. Cabbage
	B. Cauliflower
	C. Wild cabbage
	D. Kale

Ans: Wild cabbage

Q18.	The process of evolution of a species whereby characteristics which help individual organisms to survive and reproduce are passed on to their offspring and those characteristics which do not help are not passed on is called
	A. Artificial selection
	B. Speciation
	C. Hybridization
	D. Natural selection

Ans: Natural selection

Q19.	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 structure in both the organisms
	D. Birds have evolved from reptiles.

Ans: Birds have evolved from reptiles.

Q20.	Process of selecting individuals with desired characters by man is called
	A. Hybridization
	B. Reproduction
	C. Artificial selection
	D. Natural selection