Page 1 - Cl8-Bio_CBQ_Reaching the age of adolescence
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SAI International School
                                              Subject – Biology, Class-VIII
                                       Topic- Reaching the age of Adolescence
                                            Competency Based Worksheet

               SL. No                                          Question
                   1.    What is the legal age for marriage in India?
                         (a)16 years for a girl and 18 years for a boy
                         (b) 18 years for a girl and 18 years for a boy
                         (c) 18 years for a girl and 21 years for a boy
                         (d) 21 years for a girl and 21 years for a boy
                   2.    A 16-year-old boy notices significant physical changes, including a deeper voice and the
                         growth of body hair. This is primarily driven by which hormonal change?
                         (a) Increased production of testosterone by the adrenal glands.
                         (b) Increased production of estrogen by the adrenal glands.
                         (c) Increased production of testosterone by the testes.
                         (d) Increased production of estrogen by the ovaries.

                   3.    Rina is 13 years old. She notices that she has started growing taller rapidly and has
                         begun menstruating. She also feels mood swings and is more conscious of her
                         appearance. Her elder brother, Raj, who is 15, has noticed a deepening of his voice and
                         development of facial hair.
                         Which of the following best explains the biological reasons behind the changes Rina and
                         Raj are experiencing?
                         (a) They are influenced by social habits and increased stress.
                         (b) Their pituitary glands have stopped functioning, causing body imbalance.
                         (c) Hormonal changes during adolescence are triggering secondary sexual
                         characteristics.
                         (d) These are temporary effects caused by irregular food habits.

                   4.    What role does the endocrine system play in adolescence?
                         (a) It maintains blood pressure only
                         (b) It helps in digestion and respiration
                         (c)  It secretes hormones that regulate physical and emotional changes
                         (d) It helps pump blood faster
                   5.    A girl starts menstruating but is unaware of what is happening to her. What can be
                         inferred about her situation?
                         (a) She is physically unwell
                         (b) She has not been educated about puberty and reproductive health
                         (c) She is too young to understand
                         (d) It is a psychological issue
                   6.    Match the following glands with the hormones they secrete:
                                           Glands                                   Hormones
                          A. Pituitary gland                         1. Insulin

                          B. Thyroid gland                           2. Estrogen

                          C. Adrenal gland                           3. Thyroxine
                          D. Pancreas                                4. Adrenaline
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