NCERT Questions

Class 8
Chapter 10 Class 8 - Reaching The Age Of Adolescence

## The table below shows the data on likely heights of boys and girls as they grow in age. Draw graphs showing height and age for both boys and girls on the same graph paper. What conclusions can be drawn from these graphs?

 Age (Years) Height (cm) Boys Girls 0 53 53 4 96 92 8 114 110 12 129 133 16 150 150 20 173 165

The graph shows the relation between age and height of both boys and girls.

We note that during 8-12 years, girls experience a sudden growth and have more height as compared to boys. This is because puberty occurs earlier in girls(10-12 years), so they grow rapidly during this phase.

During 12-16 years,boys experience sudden grown and their height becomes the same as girls.This is because puberty occurs later in boys (12-13 years) and they grow rapidly during puberty

And, in later years, growth in both boys and girls become stable

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#### Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo