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Class X >> Science >> Our Environment >> A1

Q1	The sum total of living & non-living components, influences & events, surrounding and organism is known as __________.
A	Energy
B	Temperature
C	Environment
D	Ecology

Q2	Disposable plastic plates should not be used because:
A	They are Made of Materials with Light Weight
B	They are Made of Toxic Materials
C	They are Made of Non-biodegradable Materials
D	All of the Above

Q3	Organisms which synthesise carbohydrates from inorganic compounds using radiant energy is known as __________.
A	Decomposers
B	Herbivores
C	Producers
D	Carnivores

Q4	The best way to dispose waste is by:
A	Dumping All Domestic Waste in Litter Bin
B	Throwing the Waste on Road Sides
C	Crush All Domestic Waste and Discard it in a River
D	Separating Biodegradable and Non-biodegradable Waste before Disposing

Q5	Which of the following is an example of producers?
A	Green Plants
B	Plastic Pens
C	Polythene
D	Plastic Cans

Q6	The constituents which DO NOT form eco-systems are:
A	Plastic Bags
B	Biotic Components
C	Abiotic Components
D	All of the Above

Q7	Chlorofluorocarbons are used in:
A	Air Conditioners
B	Refrigerators
C	Fire Extinguishers
D	All of the Above

Q8	The kitchen waste that we generate is biodegradable or non-biodegradable?
A	Non Biodegradable
B	Biodegradable
C	All of the Above
D	None of the Above

Q9	An ecosystems includes:
A	All Living Organisms
B	Non-living Objects
C	Both Living Organisms and Non-living Objects
D	Sometimes Living Organisms and Sometimes Non-living Objects

Q10	Which of the following series is true about energy flow in an ecosystem?
A	Producers→Decomposers→Consumers
B	Decomposers→Consumers→Producers
C	Producers→Consumers→Decomposers
D	Consumers→Producers→Decomposers

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