Home
Class 8
BIOLOGY
Assertion: The first menstrual flow begi...

Assertion: The first menstrual flow begins at puberty and is called menopause.
Reason: At 45 to 50 years, the menstrual cycle stops. The stoppage of menstruation is called menarche.
a) If both assertion and reason are true and reason is the correct explanation of assertion.
b) If both assertion and reason are true but reason is not the correct explanation of assertion.
c) If assertion is true but reason is false
d) If both assertion and reason are false.

A

If both assertion and reason are true and reason is the correct explanation of assertion.

B

If both assertion and reason are true but reason is not the correct explanation of assertion.

C

If assertion is true but reason is false

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • REACHING THE AGE OF ADOLESCENCE

    PEARSON IIT JEE FOUNDATION|Exercise Classroom Corner (Short Answer) |28 Videos

  • REACHING THE AGE OF ADOLESCENCE

    PEARSON IIT JEE FOUNDATION|Exercise Classroom Corner (Long Answer) |11 Videos

  • REACHING THE AGE OF ADOLESCENCE

    PEARSON IIT JEE FOUNDATION|Exercise Classroom Corner (Very Short Answer) Subjective |12 Videos

  • POLLUTION OF AIR AND WATER

    PEARSON IIT JEE FOUNDATION|Exercise COMPETITION CORNER|56 Videos

  • REPRODUCTION IN ANIMALS

    PEARSON IIT JEE FOUNDATION|Exercise COMPETITION CORNER|50 Videos

Similar Questions

Explore conceptually related problems

These questions consist two statements each, printed as Assertion and reason, while answering these question you are required to choose any one of the following four responsis: (a) If both the assertion and reason are true and reason is a true explanation of the assertion. (b) If both the assertion and reason are true but the reason is not the correct explanation of assertion. (c ) If the assertion is true but reason is false. (d) If both the assertion and reason are false. Q. Assertion: The size of hydrogen bolloon increases as it rises in air. Reason: The material of the bolloon can easily stretched.

These questions consist two statements each, printed as Assertion and reason, while answering these question you are required to choose any one of the following four responsis: (a) If both the assertion and reason are true and reason is a true explanation of the assertion. (b) If both the assertion and reason are true but the reason is not the correct explanation of assertion. (c ) If the assertion is true but reason is false. (d) If both the assertion and reason are false. Q. Assertion: A bubble comes from the bottom of a lake to the top. Reason: Its radius increases.

These questions consist two statements each, printed as Assertion and reason, while answering these question you are required to choose any one of the following four responsis: (a) If both the assertion and reason are true and reason is a true explanation of the assertion. (b) If both the assertion and reason are true but the reason is not the correct explanation of assertion. (c ) If the assertion is true but reason is false. (d) If both the assertion and reason are false. Q. Assertion: Bulk modulus of elasticity (K) represents incompressibility of the material. Reason: Bulk modulus of elasticity is proportional to change in pressure.

These questions consist two statements each, printed as Assertion and reason, while answering these question you are required to choose any one of the following four responsis: (a) If both the assertion and reason are true and reason is a true explanation of the assertion. (b) If both the assertion and reason are true but the reason is not the correct explanation of assertion. (c ) If the assertion is true but reason is false. (d) If both the assertion and reason are false. Q. Assertion: Surface tension decreases with increase in temperature. Reason: On increasing temperature kinetic energy increases and intermolecular forces decreases.

These questions consist two statements each, printed as Assertion and reason, while answering these question you are required to choose any one of the following four responsis: (a) If both the assertion and reason are true and reason is a true explanation of the assertion. (b) If both the assertion and reason are true but the reason is not the correct explanation of assertion. (c ) If the assertion is true but reason is false. (d) If both the assertion and reason are false. Q. Assertion: The melting point of ice decreases with increase of pressure. Reson: ice contracts on melting.

These questions consist two statements each, printed as Assertion and reason, while answering these question you are required to choose any one of the following four responsis: (a) If both the assertion and reason are true and reason is a true explanation of the assertion. (b) If both the assertion and reason are true but the reason is not the correct explanation of assertion. (c ) If the assertion is true but reason is false. (d) If both the assertion and reason are false. Q. Assertion: For Reynold's number R_egt2000 , the flow of fluid is turbulent. Reason: Inertial forces are dominant compared to the viscoud forces at such high Reynold's number

These questions consist two statements each, printed as Assertion and reason, while answering these question you are required to choose any one of the following four responsis: (a) If both the assertion and reason are true and reason is a true explanation of the assertion. (b) If both the assertion and reason are true but the reason is not the correct explanation of assertion. (c ) If the assertion is true but reason is false. (d) If both the assertion and reason are false. Q. Assertion: Railway tracks are laid on small-sized wooden sleepers. Reason: Small sized wooden sleepers are used so that rails exert more pressure on the railway track. due to which rail does not leave the track.

These questions consist two statements each, printed as Assertion and reason, while answering these question you are required to choose any one of the following four responsis: (a) If both the assertion and reason are true and reason is a true explanation of the assertion. (b) If both the assertion and reason are true but the reason is not the correct explanation of assertion. (c ) If the assertion is true but reason is false. (d) If both the assertion and reason are false. Q. Assertion: A thin stainless steel needle can lay floating on a still water surface. Reason: Any object floats when the buoyance force balances the weight of the object.

These questions consist two statements each, printed as Assertion and reason, while answering these question you are required to choose any one of the following four responsis: (a) If both the assertion and reason are true and reason is a true explanation of the assertion. (b) If both the assertion and reason are true but the reason is not the correct explanation of assertion. (c ) If the assertion is true but reason is false. (d) If both the assertion and reason are false. Q. Assertion: A ship floats higher in the water on a high pressure day than on a low pressure day Reason: Floating of ship in the water is not possible because of buoyancy force which is present due to pressure difference.