The table below shows the data on likely heights of boys and girls as they grow in age. Draw graphs height and age for both boys and girls on the same graph paper. What conclusions can be drawn from these graphs?
|
Age Year |
Height (cm) |
|
|
Boys |
Girls |
|
|
0 4 8 12 16 20 |
53 96 114 129 150 173 |
53 92 110 133 150 165 |
We conclude that girls are taller than boys age of 12 yr generally and their height is same as the age of 16 years but some boys gain height and generally become taller than girls. 
Write notes on :
Secondary sexual characters.
Write notes on :
Sex determination in the unborn baby.
Word game : Use the clues to work out the words.
Across
3. Protruding voice box in boys
4. Glands without ducts
7. Endocrine gland attached to brain
8. Secretion of endocrine glands
9. Pancreatic hormone
10. Female hormone
Down
1. Male hormone
2. Secretes thyroxine
3. Another term for Teenage
5. Hormone reaches here through blood stream
6. Voice box
7. Term for changes at adolescence.
