CBSE Questions for Class 8 Biology Reaching The Age Of Adolescence Quiz 5 - MCQExams.com

The table below shows the data on the likely heights of boys and girls as they grow in age. Graph alongside shows height and age of girls and boys on the same graph paper. Which of these statements can be drawn as a conclusion from the graph?
 Age (Years)                             Height (cm) 
  BoysGirls
 0 53 53
 4 96 92
 8 114 110
 12 129 133
 16 160 150
 20 173 165

454940_71fd9a6e6369434f959c9d4c6191614f.png
  • The graph depicts the relation between height and age of girls.
  • Boys and girls grow in height at the same pace over their age.
  • During the age of 4-8 years, girls have less height as compared to boys. However, as soon as girls reach 12-13 years of age, their height shows a sudden increase and becomes more than boys.
  • Growth in boys and girls is dependent on their diet.
A boy is $$9$$ years old and $$120$$ cm tall. At the end of the growth period he is likely to be how tall?

454993_ec8eb05dbbd64c2da78809a70517b5cc.png
  • $$160 cm$$
  • $$160 m$$
  • $$1.06 m$$
  • None of the above
A boy is $$17$$ years old and $$160$$ cm tall. At the end of the growth period he is likely to be how tall?

454995_6fe3c449c69d40948bc2ae3a3a50dc7a.png
  • $$150$$ cm
  • $$161.6$$ cm
  • $$160$$ cm
  • $$161$$ cm
Which of the following hormone helps in ovulation?
  • Follicle stimulating hormone
  • Leutenizing hormone
  • Testosterone
  • All of the above
The thread-like structure present in the nucleus of every cell, which also determine the sex of a baby are called
  • Sperm
  • Cell wall
  • Chromosomes
  • Zygote
Look at the given image and choose which of the following options describe this process:
1947329_9f544848ea88467a94cc4ee11a8e4e1d.jpg
  • Metamorphosis
  • Change
  • Maturation
  • None of the above
Why early marriage of girls should not be acceptable?
  • They are not prepared mentally or physically for motherhood.
  • Early marriage and childbirth can cause health problems in the mother and the child.
  • It curtails employment opportunities for the young woman.
  • All of the above
Match column I and column II and select the correct option from the given codes. 
Column I                                                                   Column II 
A. Ladybird beetles feeding on insects                   (i)Mutualism
B. Barnacles growing on the back of a whale        (ii) Predation
C. Wasp pollinating the fig inflorescence                (iii) Competition
D. Lice living on skin of humans                             (iv) Commensalism
                                                                                  (v) Parasitism
  • A-(ii), B-(iv), C-(i), D-(v)
  • A-(iv), B-(ii), C-(v), D-(i)
  • A-(ii), B-(i), C-(v), D-(iv)
  • A-(iii), B(ii), C-(i), D-(iv)
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