NCERT Solutions for Class 10 Science Chapter 9 - Heredity and Evolution


NCERT Solutions for Class 10 Science Chapter 9 - Heredity and Evolution: In this Chapter, you will study about the variations and evolutions. 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. Speciation may take place when the variation is combined with geographical isolation.

Evolutionary relationships are traced in the classification of organisms. Organs or features may be adapted to new functions during the course of evolution. For example, feathers are thought to have been initially evolved for warmth and later adapted for flight.

Here are the important Topics of NCERT Solutions for Class 10 Science Chapter 9 - Heredity and Evolution mentioned below:

9.1 Accumulation of Variation during Reproduction

9.2 Heredity

    9.2.1 Inherited Traits

    9.2.2 Rules of Inheritance of Traits - Mendel's Contribution

    9.2.3 How do these Traits get Expressed?

    9.2.4 Sex determination

9.3 Evolution

    9.3.1 An Illustration

    9.3.2 Acquired and Inherited Traits

9.4 Speciation

9.5 Evolution and Classification

    9.5.1 Tracing Evolutionary Relationships

    9.5.2 Fossils

    9.5.3 Evolution by Stages

9.6 Evolution Should not be Equated with 'Progress'

    9.6.1 Human Evolution

NCERT  Class 10 Science Chapter 9 - Heredity and Evolution will also tell you about sex determination. 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). Variations in the species may confer survival advantages or merely contribute to the genetic drift. Changes in the non-reproductive tissues caused by environmental factors are not inheritable.

After going through this chapter, you must be able to get the NCERT Solution of these questions which are mentioned below, as these questions are from NCERT.

  • Q1. Explain how sexual reproduction gives rise to more viable variations than asexual reproduction. How does this affect the evolution of those organisms that reproduce sexually?
  • Q2. How is the equal genetic contribution of male and female parents ensured in the progeny?
  • Q3. Only variations that confer an advantage to an individual organism will survive in a population. Do you agree with this statement? Why or why not?

If you have any problem in answering these questions or you are not getting the correct answers then don't worry, NCERT Solutions for Class 10 Science Chapter 9 - Heredity and Evolution is there for you to help. Solutions for NCERT Class 10 Science Chapter 9 - Heredity and Evolution will give you answers to all the questions which are mentioned in the NCERT book. First of all, try to answer all the questions by yourself.

NCERT Solutions for Class 10 Science Chapter 9 Heredity and Evolution - Solutions


NCERT Solutions for Class 10 Science - Chapter wise

Chapter No.

Chapter Name

Chapter 1

Chemical Reactions and Equations

Chapter 2

Acids, Bases, and Salts

Chapter 3

Metals and Non-metals

Chapter 4

Carbon and Its Compounds

Chapter 5

Periodic Classification of Elements

Chapter 6

Life Processes

Chapter 7

Control and Coordination

Chapter 8

How do Organisms Reproduce?

Chapter 10

Light Reflection and Refraction

Chapter 11

The Human Eye and The Colorful World

Chapter 12


Chapter 13

Magnetic Effects of Electric Current

Chapter 14

Sources of Energy

Chapter 15

Our Environment

Chapter 16

Sustainable Management of Natural Resources


NCERT Solutions for Class 10 - Subject Wise

NCERT Solutions for Class 10 Maths

NCERT Solutions for Class 10 Science


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