NCERT Solutions Class 10 Science Chapter 9 Heredity and Evolution

Here you can get free NCERT Solutions for Class 10 Science, of Chapter 9 Heredity and Evolution. All NCERT Book Solutions are given here exercise wise for Heredity and Evolution. NCERT Solutions are helpful in the preparation of several school level, graduate and undergraduate level competitive exams. Practicing questions from NCERT Science Book, its Solutions for Class 10 Chapter 9 Heredity and Evolution is proven to enhance your subject skills.

Class: 10th Class
Chapter: Chapter 9
Name: Heredity and Evolution
Subject: Science

NCERT Solutions Class 10 Science Chapter 9 – Heredity and Evolution

NCERT Class 10 Solutions Chapter 9 – Heredity and Evolution are given below.

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

Class 10 Science Chapter 9 NCERT Solutions

Get step by step solutions for the questions given in class 10 Science textbook from the latest NCERT as per board exam guidelines.

Class 10 Science Chapter 9 Important Topics

1. Accumulation if Variation During Reproduction
2. Heredity
–  Inherited Traits
–  Rules for the Inheritance of Traits – Mendel’s Contributions
–  How do these Traits get Expressed?
–  Sex Determination
3. Evolution
–  An Illustration
–  Acquired and Inherited Traits
4. Speciation
5. Evolution and Classification
–  Tracing Evolutionary Relationships
–  Fossils
–  Evolution by Stages
6. Evolution should not be Equated with ‘progress’
–  Human Evolution

Summary Chapter 9 Class 10 Science

  • 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.
  • 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.
  • Speciation may take place when variation is combined with geographical isolation.
  • Evolutionary relationships are traced in the classification of organisms.
  • Tracing common ancestors back in time leads us to the idea that at some point of time, non-living material must have given rise to life.
  • Evolution can be worked out by the study of not just living species, but also fossils.
  • Complex organs may have evolved because of the survival advantage of even the intermediate stages.
  • 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.
  • Evolution cannot be said to ‘progress’ from ‘lower’ forms to ‘higher’ forms. Rather, evolution seems to have given rise to more complex body designs even while the simpler body designs continue to flourish.
  • Study of the evolution of human beings indicates that all of us belong to a single species that evolved in Africa and spread across the world in stages.

Exercise Covered under Science Book Class 10 Science Chapter 9 NCERT Solutions

Here on this page we have covered following exercises from NCERT Science Book for Class 10 Science Chapter 9 Heredity and Evolution

Questions All Questions Solved
Exercises 12 Questions with Solutions

We also suggest you to practice all the solved examples given in the NCERT book to clear your concepts on Heredity and Evolution. You can buy NCERT Books for Class 10 Science online for doorstep delivery.

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