NCERT Class VIII Science Solutions: Chapter 10-Reaching the age of Adolescence Part 3

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Question 9:

Word game: Use the clues to work out the words.

Across:

  • Protruding voice box in boys

  • Glands without ducts

  • Endocrine gland attached to brain

  • Secretion of endocrine glands

  • Pancreatic hormone

  • Female hormone

Down:

  • Male hormone

  • Secretes thyroxin

  • Another term for teenage

  • Hormone reaches here through blood stream

  • Voice box

  • Term for changes at adolescence

Result for Use the clues to work out the words.

Use the Clues to Work Out the Words

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Answer:

Result dor Use the clues to work out the words Answer

Use the Clues to Work Out the Words Answer

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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?

As showing in images is a result for graphs

Result for Graphs

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Answer:

Conclusion:

  • Girls are taller than boys till they reach the age of 12 years.

  • Till the age of 16 years, the height of both boys and girls remain the same.

  • After 16, both boys and girls gain increase in height. In general, boys are taller than girls.