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SAI INTERNATIONAL SCHOOL

STD- IX
SUBJECT –BIOLOGY

COMPETENCY BASED WORKSHEET
TOPIC – IMPROVEMENT IN FOOD RESOURCES

Sl/No. Questions Marks
The following questions consist of two statements- Assertion (A) and
Reason (R). Answer these questions selecting the appropriate option
given below:
(a) Both A and R are true and R is the correct explanation for A.
(b) Both A and Rare true and R is not the correct explanation for A.
(c) A is true but R is false.
(d) A is false but R is true.
Q1. Assertion (A): Overfishing is a sustainable method of increasing food 1
resources from marine ecosystems.
Reason (R): Overfishing depletes fish populations, disrupts ecosystems,
and threatens long-term food availability from the oceans.
Q2. Assertion (A): Bee-keeping is the practice of rearing bee to get honey 1
and wax.
Reason (R): Pasturage is the availability of flowers to the bees for nectar
and pollen collection.
Q3. Assertion (A): Our natural resources are damaged due to human 1
activities.
Reason (R): Our natural resources damaged by global warming.
Q4. Assertion (A): Different type of crops required different photoperiods. 1
Reason (R): Photoperiods means duration of sunlight.
Q5. Assertion (A): Fish and few other varieties of aquatic animals are used as 1
food.
Reason (R): Fish and other varieties of sea food constitute good source of
protein.
Q6. 1

Refer to the two group of crops shown above and select the wrong
statements
(i) Rainy season is good for group A crops.
(ii) Group B crops are monsoon crops
(iii) Group B crops depend upon irrigation sources