Chapter
4: Environmental balance
1. The variety we see in all the living things that
belong to a particular area is called the __________ of that place.
A. Biodiversity
B. Biology
C. Biomedical
D. Biomass
E. None of these
Ans.: A. Biodiversity
2. The surroundings and the conditions therein which
affect the life of the organisms is called an __________.
A. Biodiversity
B. Biomedical
C. Environment
D. Biology
E. None of these
Ans.: C. Environment
3. Environmental Science studies _________ between living
and non-living things.
A. Disconnect
B. Imbalance
C. Disassociation
D. Difference
E. Interactions
Ans.: E. Interactions
4. __________ are the main support for every food chain.
A. Animals
B. Plants
C. Insects
D. Mammals
E. Reptiles
Ans.: B. Plants
5. For the existence of living things, it is important
that ___________ is maintained.
A. Biodiversity
B. Biology
C. Biomedical
D. Environmental balance
E. None of these
Ans.: D. Environmental
balance
6. Living things depend upon each other for food and
feeding. They are interconnected through the food chain. The interdependence
among themselves for food is called a ___________.
A. Food web
B. Food pyramid
C. Food chain
D. Food cycle
E. None of these
Ans.: C. Food chain
7. When different food chains are combined together, they
form a _____________.
A. Food chain
B. Food pyramid
C. Food cycle
D. Food web
E. None of these
Ans.: D. Food web
8. ____________ in the soil brings about decomposition of
residual substances.
A. Food
B. Microorganisms
C. Plastic
D. Paper
E. None of these
Ans.: B. Microorganisms
9. All the animals use oxygen from the environment for
___________.
A. Excretion
B. Digestion
C. Blood circulation
D. Breathing
E. Swallowing
Ans.: D. Breathing
10. All the plants use ____________ for the preparation
of food.
A. Carbon dioxide
B. Nitrogen
C. Hydrogen
D. Carbon monoxide
E. Oxygen
Ans.: A. Carbon
dioxide
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