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NCERT Solutions for Class 8 Science Chapter 10- Reaching the Age of Adolescence

Our NCERT Solutions For Class 8 Science Chapter 10 – Reaching The Age of Adolescence are one of the most preferred study materials. Some of the important concepts covered in NCERT Class 8 Science Chapter 10 Solutions include puberty, secondary sexual characteristics, mental and physical changes at puberty, pituitary gland, thyroid gland, menstrual cycle, sex determination, reproduction phase of humans, the role of hormones in initiating reproduction function, hormones other than sex hormones and reproductive health. 

The NCERT Solutions for Class 8 Science Chapter 10 will strengthen your conceptual foundation about the topic Adolescence. We have covered all crucial topics and exercises of this chapter in detail to help you learn and revise quickly during CBSE exams. Our comprehensive Class 8 Science Reaching The Age of Adolescence Solutions have been based on effective study techniques that help you attain the desired score in your exams. 

Our NCERT Solutions for Class 8 Science Chapter 10 – Reaching The Age of Adolescence have been carefully designed to help you expand your knowledge base and improve your retention rate. With our NCERT Solutions as your study-buddy, you can say goodbye to all exam related tensions and study at the comfort of your home.

NCERT CBSE Class 8 Science Chapter 10: Important Topics

Adolescence and Puberty

In this chapter of NCERT Class 8 Science Chapter 10, you will learn how the changes in thoughts begin when you start growing from a child to a teen and from teen to a young adult. It covers various important concepts related to adolescence and puberty. Some of them have been listed below.

  • Changes at Puberty 

This section of the chapter discusses in detail about different changes that you see during the age of puberty. Some such changes have been discussed below.

    • Increase in Height 

In this section of NCERT Class 8 Science Chapter 10, you will see that puberty is one of the most commonly seen changes which happen to the human body. You tend to see the growth in height first in girls and then in boys. 

    • Change in Body Shape 

In this section of NCERT Class 8 Science Chapter 10, you will be taught to observe certain changes in body shape. An example of the same would be that boys of Class 10 will have a better height and broad shoulders than the boys studying in class 6 or 7. You will read about the physical changes in both boys and girls.

    • Voice Change

In this topic of Class 8 Science Reaching The Age of Adolescence, you will be learning how the voice of a human being changes at the stage of puberty. You will be able to notice this change in your classmates or siblings more. You shall see the larynx only during puberty. 

    • Increased Activity of Sweat and Sebaceous Glands 

In this topic of Class 8 Science Reaching The Age of Adolescence, you will learn that the activities of sweat glands and oil glands and how the secretion increases activity when you are growing. You shall read more about things like acne and pimples related to puberty.

In the next section of CBSE NCERT Class 8 Science Chapter 10, you will read more about the different sex organs and their development, reaching mental and intellectual and emotional maturity. 

  • Secondary Sexual Characters 

This topic of Chapter 10, will make you understand about the testes and ovaries. This is one of the most important segments of the chapter. You will learn more about reproductive organs, gametes, sperm and ova. Here, you will understand more about the adolescence caused by hormones which are chemical substances present in your body. This section also talks about the secretion of the hormones which are controlled by endocrine and pituitary gland. 

  • Role of Hormones in Initiating Reproductive Function 

This topic of CBSE NCERT Class 8 Science Book, you will be learning about the functions and working of hormones. You shall come to know more about the specific parts of the body and several ductless endocrine glands in the body. You shall learn that pituitary gland releases a number of hormones. You shall also learn what causes the ova to mature in the ovaries and sperm. 

  • Reproductive Phase of Life in Humans 

In this topic of the Chapter – Reaching The Age of Adolescence, you will be explained in details about more about the capability of human beings to reproduce. You shall know about the reproduction phase of life in females and males. This section covers more details on fertilization, development, and maturity of eggs.  

  • Determination of Sex in a Baby

This topic of NCERT CBSE Class 8 Science Chapter 10, will teach you about the sex of a baby. Here you will learn about the sex chromosomes, and why they are named as X and Y chromosomes. 

  • Hormones other than Sex Hormones

In this topic of chapter 10, you will see how the pituitary glands and endocrine glands work. You shall also learn how they are attached to the brain. Other glands covered in this section include thyroid, pancreas and adrenals. It also explains in detail about their functioning and the diseases related to their dysfunctioning.

  • Role of Hormones in Completing the Life History of Insects and Frogs 

This part of CBSE Class 8 Science Chapter 10 Syllabus, talks about the history of the silk moth and the frog. It mentions the various stages of development of a caterpillar and frog. It also teaches you how much water should be present in tadpoles to grow adequately.

  • Reproductive Health 

Our NCERT Solutions for Class 8 Science Chapter 10, will explain to you how the physical and mental well being is really necessary for human beings and how essential is personal hygiene and physical exercise. In the later part of the chapter, you will read about the nutritional needs of the adolescents, and how you must say “No” to drugs and Adolescent pregnancy. 

CBSE NCERT Class 8 Science Chapter 10 Exercise

NCERT Solutions for Class 8 Science Reaching The Age of Adolescence consists of 1 exercise with 9 questions. 

  • Question 1 is a short answer question type,  in which you have to answer about the chemical secretions of endocrine glands. 
  • Question 2 is a short answer question type. Here you have to explain adolescence. 
  • Question 3 is a short answer question type, here the question is asked from the topic menstruation. 
  • Question 4 is a long answer type, and it covers the topic puberty. 
  • Question 5 is a short answer question. In this, you have to write about endocrine glands and hormones they secrete in a table form.
  •  Question 6 is a short answer question. It asks you to write about sex hormones. This question is from the testosterone topic. 
  • Question 7 is an objective question. It comprises three sub-questions. For each question, you get 4 options, and you have to choose the correct option. 
  • Question 8 is a short answer question from the topic of secondary sexual characteristics. 
  • Question 9 is a crossword puzzle, where you are given clues, and you have to fill the crossword with those clues given. Solving this question is a fun way of becoming thorough with the concepts of this chapter.