NCERT Exemplar Class 10 Science Chapter 9 Solutions: Heredity and Evolution

NCERT Exemplar Class 10 Science Solutions Chapter 9 ‘Heredity and Evolution’ helps to gain knowledge about the distinct variations in living organisms. The NCERT Exemplar Class 10 Science Problems for Class 10 Science Chapter 9 illustrate the procedure regarding the creation of variations in distinct living organisms and also helps understand the process of evolution.

There are many important concepts in this chapter such as accumulation of variation in reproduction, heredity, speciation, evolution, evolution, and classification of organisms. The NCERT Exemplar exercise of this chapter has a total of 46 questions that are further divided into three parts- multiple choice questions, short questions, and long questions.

NCERT Exemplar solutions for class 10 chapter 9 is a step-by-step explanation of how variations are formed in different organisms. Each concept is explained in simple language for better learning. Solving the NCERT Exemplar Problems for this chapter will help you grasp the knowledge real quick.

Important Topics for NCERT Exemplar Class 10 Science Solutions Chapter 9: Heredity and Evolution

NCERT Exemplar Class 10 Science Solutions Chapter 9 illustrates important information that students not only require book-wise learning but also need to understand in real-life situations.

The chapter covers important topics like heredity, evolution, stages of evolution, variation and etc.

Accumulation of variation during reproduction

  • This topic explains how the previous generation provides a basic common design as well as subtle changes in it.
  • These changes are due to small inaccuracies in DNA copies of the organism. 
  • The concept also answers questions like- do all variations in a species have an equal chance of surviving? The answer is no. 


  • The variations of similar designs are the most obvious outcome of reproduction.
  • Inherited traits are generally passed on traits from the previous generation to the new one. For eg- we know that a child bears qualities from his parents. This shows a great deal of variation.


  • As we know that variation in generations occurs due to inaccuracy of DNA copying. However these variations may tend to continue further to the future upcoming generations. 
  • The variations occurring from time to time lead to the evolution of the generation. The changes that occur with generations are evolution.  A proper explanation is made using diagrams in the chapter.


  • Variations simply change the common characteristics of a particular species.
  • Speciation may take place when the variation is combined with geographical isolation.
  •  Speciation due to some factors may lead to the rise of the new species. An example of beetles is given to explain the concept in detail.

Evolution and classification

  • How do we trace evolutionary relationships? The characteristics in different organisms can be similar because they are inherited from a common ancestor. For eg- mammals have four limbs as do birds, reptiles and amphibians. The basic function of the limbs remains the same though it has been designed to perform distinct functions in various vertebrates.
  • Fossils are the preserved traces of living organisms. There are various kinds of fossils such as a fossil of a fish or dinosaur.
  • Evolution is also done by stages. These usually happen with insects like butterflies as after the birth of a caterpillar a cocoon is formed and then at the last stage a butterfly comes out of the cocoon.

Exercise Discussion for NCERT Exemplar Class 10 Science Solutions Chapter 9: Heredity and Evolution

  • The exercise in NCERT Exemplar Class 10 Chapter 9 consists of questions that are based on three levels. The net questions in the exercise are 47 with 25 multiple choice questions, 10 short questions, and 10 long questions.
  • Multiple-choice questions are easier as compared to the other two categories. These questions are basically to help you revise the basics of the chapter. The questions cover concepts like the change of genetic material, specification, evolution and classification.
  • Short answer questions need more explanation. These include questions such as how is the sex of a newborn determined in humans, why do all the gametes in females are x chromosomes, etc. 
  • Long question solutions require a thorough understanding of the chapter. These questions are based on the topic of inheritance and hereditary.

Benefits of using NCERT Exemplar Class 10 Science Solutions Chapter 9: Heredity and Evolution by Instasolv

  • NCERT Class 10 Science Exemplar Problems with Solutions for Chapter 9 will help you understand the concepts thoroughly. 
  • We make sure that each topic is explained in steps so that you do not face any obstacles while recalling what you have learned. 
  • Also, we make sure that all our study material is upgraded and follows the NCERT guidelines and current CBSE exam pattern. 
  • Our solutions make sure you get enough time for revision so that you can score high grades.