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Subjects
Science State Board
Class 10
Reproduction in plants and animals
Reproduction in animals

31. Overpopulation, family planning, menstruation, and types of contraceptions

Exercise condition:

6 m.

Examine the statements below and choose the correct answer:

1.

Assertion (A):	IUDs are the most widely accepted and used method of contraception.
Reasoning (R):	They are injectable devices that prevent pregnancy by \(3\) months.

Both A and R are true but R is NOT the correct explanation of A
A is true but R is false
A is false but R is true
Both A and R are false
Both A and R are true and R is the correct explanation of A

2.

Assertion (A):	In an oviparous organism, zygote develops inside the organism.
Reasoning (R):	In a viviparous organism, zygote develops outside the organism.

A is true but R is false
Both A and R are true but R is NOT the correct explanation of A
Both A and R are false
A is false but R is true
Both A and R are true and R is the correct explanation of A

3.

Assertion (A):	In menstrual phase, \(LH\) secretion decreases.
Reasoning (R):	There is degeneration of corpus luteum in the menstrual phase.

Both A and R are false
Both A and R are true but R is NOT the correct explanation of A
Both A and R are true and R is the correct explanation of A
A is false but R is true
A is true but R is false

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