8th Class Biology
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Reproductive Health
What is Reproductive Health? Health means the physical and mental well-being of a person. During adolescence,…
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Role of Hormones in Completing the Life History of Insects and Frogs
Hormones not only control human growth — they also control life cycle changes in animals, especially…
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Hormones Other than Sex Hormones
Besides sex hormones, our body has many other hormones that control growth, metabolism, stress, and body…
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How is the Sex of the Baby Determined?
The sex (boy or girl) of a baby is decided at the moment of fertilisation. The…
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Reproductive Phase of Life in Humans
When Does Reproductive Life Begin? Adolescents become capable of reproduction when: This usually begins at puberty.…
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Role of Hormones in Initiating Reproductive Function
What Do Endocrine Glands Do? Endocrine glands are ductless glands that release hormones directly into the…
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Secondary Sexual Characters
What are Secondary Sexual Characters? You already know: During puberty, some new physical features appear that…
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Changes at Puberty
During puberty, many changes take place in the body. These changes prepare a child to become…
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Adolescence and Puberty
What is Adolescence? Adolescence is the period of life when a child’s body changes and prepares…
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REACHING THE AGE OF ADOLESCENCE
Introduction: All living organisms grow and change as they move from childhood to adulthood. In humans…
The Bio Brief 