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WorksheetsWater pollution
Total questions: 10
Worksheet time: 5mins
The maximum biological magnification of DDT through food web is seen in:
A) Algae
B) Bacteria
C) Higher plants
D) Man
Which organisms in a food chain consisting of algae, copepods (small crustaceans), small fish, large fish, and ospreys (fish-eating birds of prey) would have the highest concentrations of DDT in their tissues?
A) Algae
B) Copepods
C) Small fish
D) Ospreys
Thermal pollution of water bodies is due to:
A) Discharge of heat (hot water) from power plants.
B) Discharge of chemicals from industries.
C) Discharge of waste from mining.
D) Discharge of agricultural runoff.
The enrichment of water by nutrients is:
Mineralization
Biomagnification
Eutrophication
All of these
The sea water gets polluted mainly due to:
Industrial waste.
Oil spills.
Death of marine fauna
None of these
Industrial waste containing non-biodegradable substance left in a pool of water and a person eating a fish of that water, showing signs of toxicity is a typical example of: JH Critical
A) biological multiplication.
B) biological magnification.
C) accidental care of toxicity.
D) not fish but the person showing toxic effect.
Some aquatic animals die due to algal bloom because of lack of
a) Oxygen
b) Nitrogen
c) Carbon dioxide
d) Sculpture
Which one of the following is not a bioindicator of water pollution?
Blood-worms
Sludge-worms
Sewage fungus
Stoneflies
water pollution is due to
sulphur dioxide
cardon dioxide
oxygen
industrial discharges
water blooms are formed by
a)lemna
b)hydrilla
c)water hyacinath
d)plankotonic algae
