Question

Question 25
Observe the chart and graph given in Fig. 10.3 carefully and answer the following questions.




(a) Which of the line represents the height of boys?
(b) Which line represents the height of girls?
(c) What is the difference between the pattern of increase in the height of boys and girls?
(d) Is this pattern true for each individual?

Answer 1

(a) The red line represents the height of boys
(b) The blue line represents the height of girls
(c) At the onset of puberty, girls grow faster in height than the boysbut they slow down by the age of 16, the boys however continue to grow till they are 18. By the age of 18 years, approximately both reach their maximum height
(d) No, the rate of growth in height varies among individuals. Some may grow in height suddenly at puberty and then slow down, while others may grow gradually.