Question

DIRECTION: In each of the following questions, a statement of Assertion is given and a corresponding statement, given below, mark the correct answer as:
a)Both assertion and reason are true and reason is the correct explanation of assertion.
b)Both assertion and reason are true but reason is not the correct explanation of assertion.
c)Assertion is true but reason is false.
d)Both assertion and reason are false.
I)Assertion: Inter cropping prevents pests.
Reason: plant pests can be controlled biologically by their natural parasites and pathogens.
II)Assertion: Usage of manure is advantageous for our environment.
Reason: Manure contains chemical substances like nitrogen,phosphorus and potassium.
III)Assertion: To replenish the lost nutrients in the soil, quick acting, handy nutrients are applied in the form of fertilizers.
Reason: Chemical fertilizer contains the necessary plant nutrients.
IV)Assertion: Fungicides act against fungal pathogens.
Reason: Fungicides are not harmful to human beings.

Answer 1

Answer:

1. A and R are true but R is not the correct explanation of A !

2.A is false but R is true !

3.A is true but R is false .

4.both A and R are true and R is correct explanation of A .