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Solved CBSE Class 8 Science Chapter 10 Assertion and Reason Questions – Reaching the age of Adolescence. Here we (Net Explanations) working very hard to providing you with the Important Assertion Reason Questions for this Chapter.
Assertion and Reason Questions Class 8 Science Chapter 10 Reaching the age of Adolescence
1.) Assertion- change in height , voice , in body shape are the sign of puberty.
Reason- the several changes are observe during adolescence are called puberty.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- Option A
2.) Assertion- Girls have high pitched voice , whereas boys have a deep voice.
Reason- Because the voice is depend upon the growth of larynx.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- option A
3.) Assertion- endocrine glands called ductless glands.
Reason- they don’t release hormones directly into the blood streams.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- option C
4.) Assertion- the growth of hairs on face that is moustaches and beard.
Reason- this is primary sexual characters in male.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- option C
5.) Assertion- the changes which occurs at adolescence are controlled by hormones.
Reason- hormones are chemical substances secretion from endocrine glands.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- option A
6.) Assertion- reproductive life of a woman lasts from menarche to menopause.
Reason- menarche is the starting phase of menstruation and menopause is the stoppage of menstruation.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- option A
7.) Assertion- there are 23 pairs of chromosomes in human body.
Reason- chromosomes is a thread like structure present in nuclei of the cell.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- option B
8.) Assertion – male chromosomes are responsible for the sex of new born baby.
Reason- female have similar pairs of X chromosomes and male have different XY chromosome.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- Option A
9.) Assertion- balanced diet is very important at the age of adolescence.
Reason- the meal include proteins , carbohydrates, fats and vitamins are known as balanced diet.
a) Assertion and reason both are correct statement and reason is correct explanation for assertion.
b) Assertion and reason both are correct statement and reason is not correct explanation for assertion.
c) Assertion is correct statement but reason is wrong statement.
d) Assertion is wrong statement but reason is correct statement.
Ans- option B
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