Arjun Sharma, Seema Mehra and, Shikha Sharma Solutions for Chapter: Reaching the Age of Adolescence, Exercise 5: Chapter Practice

The most conspicuous visible change that occurs in boys during puberty is

Given below are events that lead to pregnancy and development of embryo.

(i) Fertilization of egg

(ii) Maturation of egg

(iii) Release of egg

(iv) Embedding of embryo in uterus

Which of the following options gives the correct order of sequence in which they occur ?

For the metamorphosis of tadpoles which of the following elements must be available in water?

Pimples and acne are formed due to the increased activity of 

(i) adrenal gland 

(ii) sebaceous glands

(iii) thyroid gland 

(iv) sweat glands

AIDS can spread from an infected person to another person through

Which among the following hormones controls calcium metabolism in our body?

The dramatic changes in body features associated with puberty are mainly because of the secretions of

(i) Thyroxine

(ii) Oestrogen

(iii) Adrenaline

(iv) Testosterone

Match the hormones given in column I with their deficiency disease given in column II.