NCERT Solutions Class 8 Science Chapter 10 - Reaching the Age of Adolescence-Growing up is a natural phenomenon. There comes a period in your life when you are neither a child nor an adult. In this period, a lot of bodily changes occur in your body that makes you capable of reproduction i.e. you become able to produce offspring. NCERT Science Class 8 Chapter 10 Reaching the age of adolescence mainly deals with this phase of life called adolescence.Once you have studied the chapter thoroughly, you can solve the exercise of NCERT textbook and write appropriate NCERT solutions for class 8 science chapter 10 Reaching the age of adolescence.
Adolescence is that period of life, when the body undergoes changes, leading to reproductive maturity. This phase starts when you are 13 and ends when you are 19.
Some of the specific changes that are seen during this period are given below
Hormones are chemical substances produced by the endocrine glands. Hormones produced by ovary and testes are responsible for the initiation of reproductive maturity. In NCERT Science Class 8 Ch 10, you will get to learn about how hormones cause changes during adolescence also.
The instructions regarding the sex of a baby are preserved in the fertilized egg. These instructions are contained in thread-like structures called chromosomes. The names of chromosomes responsible for sex determination are called X and Y chromosomes. Different combinations of these two chromosomes in zygote results into either male or female child. Further, the role of these chromosomes and how they affect sex determination is described in NCERT Science Class 8 Ch 10.
Class 8 Science Ch 10 reaching the age of adolescence is composed of different topics and subtopics. You can have a look on these topics which are mentioned hereunder:
10.1 Adolescence and puberty
10.2 Changes and puberty
10.3 Secondary sexual characters
10.4 Role of hormones in initiating the reproductive function
10.5 Reproductive phase of the life of a human
10.6 How is the sex of the baby determined
10.7 Hormones other than sex hormones
10.8 Role of Hormones in Completing the Life History of Insects and Frogs
For the preparation of this chapter, NCERT solution for science class 8 chapter 10 reaching the age of adolescence can be used. Once you have gone through the chapter, you can try solving NCERT questions of class 8 Chapter 10 Reaching the age of adolescence. For more practice, you can also refer to NCERT class 8 science Chapter 10 worksheets. For a better understanding of concepts, prepare NCERT class 8 science chapter 10 notes and revise them thoroughly.
The Questions and NCERT Solutions for class 8 Science Chapter 10 Reaching the age of adolescence have been provided below:
7. Choose the correct option.
(c) The right meal for adolescents consists of
(i) chips, noodles, coke.
(ii) chapati, dal, vegetables.
(iii) rice, noodles and burger.
(iv) vegetable cutlets, chips and lemon drink.
8. Write notes on—
(b) Secondary sexual characters.
8. Write notes on—
(a) Adam’s apple.