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Class 8 Science
Reaching The Age Of Adolescence
Quiz 1
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Reproductive age in women starts when their:
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menstruation starts
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breasts start developing
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body weight increases
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height increases
Explanation
Reproductive age in women starts when their menstruation starts.
The right meal for adolescents consists of:
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chips, noodles, coke
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chapati, dal, vegetables
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rice, noodles and burger
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vegetable cutlets, chips and lemon drink
Explanation
The right meal for adolescents consists of chapati, dal, vegetables.
Which of the following combination of chromosomes lead to the birth of a baby girl:
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XX
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XY
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X
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Y
Explanation
Combination of chromosomes XX lead to the birth of a baby girl.
Which of the following combination of chromosomes lead to the birth of a baby boy:
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XX
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XY
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X
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Y
Explanation
Combination of chromosomes XY lead to the birth of a baby boy.
All human beings have pairs of chromosomes in the nuclei of their cells.
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22
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2
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23
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46
Explanation
23. All human beings have 23 pairs of chromosomes in the nuclei of their cells. Out of this 22 pairs of chromosomes are called autosomes. 1 pair is called sex chromosome.
The unfertilised egg always has X chromosome.
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two
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one
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four
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none of these
Explanation
The unfertilized egg always has one X chromosome.
‘Goitre’ is a disease of
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adrenal gland
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pancreas
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thyroid gland
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none of these
Explanation
‘ Go itre ’ is a disease of thyroid gland.
Which or ht ronowing proIdes iron to our body:
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leafy vegetabks
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citrus
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meat
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all of these
Explanation
Leafy vegetables, citrus, meat all of these provide iron to our body.
Adreanlia hormone is produced by:
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pituitary gland
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thyroid gland
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adrenal gland
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pancreas
Explanation
Adrenalin hormone is produced by adrenal gland.
Whea the sperm contributes a Y-chromosome to the egg (ovum) at fertllisatin than the zygole would develop into a:
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femaict,hild
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malechild
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either female or male child
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none of these
Explanation
Male child is developed when the sperm contributes a Y chromosome to the egg (ovum) at fertilisation.
Which of the following Is incorrecl:
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Girls have high pitched voice
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Boys have a deep voice
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The voice box of girls is larger than that of boys
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The voice box in boys can be seen as a wouudmg part of the throat called Adam’s apple
Explanation
The voice box of girls is smaller than that of boys.
The changes which occur at adolescence are controlled by:
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enzymes
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balanced diet
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hormones
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none of these
Explanation
The changes which occur at adolescence are controlled by hormones.
Which of the following b balmced dirt:
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icc-cream and cold drink
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meat and egg
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roti/rice, dal, vegetables
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none of these
Explanation
Roti/ Rice, dal, vegetables is balanced diet.
The legal age for marriage of girls in our coaltry is:
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21 years
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18 years
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20 years
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16 years
Explanation
18 years is the legal age for marriage of girls in our country.
AIDS is teased by a dangerous:
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virus HIV
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virus VIH
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protozoa
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bacteria
Explanation
AIDS is caused by a dangerous virus HIV.
Hormones reaches to different parts:
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with lymph
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by ducts
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with blood
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none of these
Explanation
Hormones reaches to different parts of the body with blood.
In our body hormones are formed in:
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endocrine glands
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exocrine glands
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kidneys
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none of these
Explanation
In our body hormones are formed in endocrine glands.
Which of the following endocrine gland is called master gland:
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pituitary gland
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adrenals glands
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thyroid gland
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pancreas
Explanation
Pituitary gland is called master gland.
Which gland secretes insulin:
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thyroid gland
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pancreas
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adrenals
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thymus gland
Explanation
Pancreas secretes insulin.
Which of the following controls sugar in blood:
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sex hormone
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pancreas
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growth hormone
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insulin
Explanation
Insulin controls sugar in blood.
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