EASY
8th Jammu and Kashmir Board
IMPORTANT
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Write a note on Adam’s apple.

Important Questions on Reaching the Age of Adolescence

MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 10 - Reaching the Age of Adolescence>Exercises>Q 8
Write a note on secondary sexual characters.
HARD
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 10 - Reaching the Age of Adolescence>Exercises>Q 8
Write a note on sex determination in an unborn baby.
HARD
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 10 - Reaching the Age of Adolescence>Exercises>Q 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 thyroxine
3. Another term for teenage
5. Hormone reaches here through bloodstream
6. Voice box
7. Term for changes at adolescence

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MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 10 - Reaching the Age of Adolescence>Exercises>Q 10
The table below shows the data on the likely heights of boys and girls as they grow in age. A graph is also given. What conclusions can be drawn from the given graph?
Age(years) Height (cm)
  Boys Girls
0 53 53
4 96 92
8 114 110
12 129 133
16 150 150
20 173 165

https://lh3.googleusercontent.com/cCOASshYo2GmoPKtw9g6szB1Ud8CRi03OZtS979JsjtrMJKI-irG0JmojHVPlIfUqJqYuslEmWjT3rd1Ybcb0pwz5hgWOyWkQv1DmVGbWpHDuHhmx36CQoX0WkaLs4kWc1EdIoo
HARD
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 10 - Reaching the Age of Adolescence>Extended Learning - Activities and Projects>Q 3
In our country, according to a census, there are 882 adolescent females for every 1000 males. Find out the concerns of the community regarding this ratio. Remember that the chance of having a boy or a girl is equal.
MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 10 - Reaching the Age of Adolescence>Extended Learning - Activities and Projects>Q 3
In our country, according to a census, there are 882 adolescent females for every 1000 males. Find out what is amniocentesis and how this technique is useful? Why the use of identification of sex of the unborn child is banned in India?
HARD
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 10 - Reaching the Age of Adolescence>Extended Learning - Activities and Projects>Q 4
Write a short note on the importance of knowing facts about reproduction.