CBSE Class 8 adolescence — practice questions
21 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 8 adolescence in the app →The period of life during which the body of a child undergoes changes leading to reproductive maturity is callThe chemical substances that bring about changes in the body during puberty are called:The male sex hormone is:The female sex hormone is:The 'master gland' that controls many other endocrine glands and also secretes growth hormone is the:Menstruation in a normal adult woman occurs roughly once every:The first menstrual flow in a girl is called:The eventual stopping of menstruation, generally around 45 to 50 years of age, is called:The 'voice box' (larynx) in adolescent boys becomes larger and projects from the throat, giving rise to a struWhy do adolescent boys often go through a phase of hoarse, cracking voice?The features that distinguish males from females but are NOT directly involved in producing gametes — like beaHormones reach a SPECIFIC organ or tissue in the body called the ___ , where they trigger their action:The figure shows the human reproductive cycle of sex determination.
![](https://qallery.app/diagrams/v2_classThe hormone INSULIN is produced by which gland and what condition arises if too little is produced?The metamorphosis of a tadpole into a frog requires the hormone thyroxine. If the water in which the tadpole lIron-rich foods are especially important for adolescents because:A boy enters puberty noticeably later than most of his classmates. Within the framework of this chapter, the mIn a couple having three daughters, the mother is sometimes wrongly blamed for the sex of the children. The scTwo adolescents A and B have the SAME pituitary problem: their pituitary cannot release enough growth hormone.A girl is told that 'she cannot look at boys during menstruation', 'cannot enter the kitchen during her periodAdolescents are repeatedly advised to say 'NO' to drugs and tobacco. From a hormone/health perspective, why is