Page No 124:
Question 1:
What is the term used for secretions of endocrine glands responsible for changes taking place in the body?
Page No 125:
Question 9:
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 thyroxin
3. Another term for teenage
5. Hormone reaches here through blood stream
6. Voice box
7. Term for changes at adolescence
Page No 126:
Question 10:
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 |
