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Introducing new Paper mode
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10 questions
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- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is renewable resource?
solar energy
air
petroleum
water
- Multiple ChoicePlease save your changes before editing any questions.
Which is a degradable pollutant?
DDT
Aluminium foil
Domestic wastes
Mercury salts
- Multiple ChoicePlease save your changes before editing any questions.
What is the best pH of the sil for cultivation of plants?
3.4 - 5.4
6.7 -7.5
4.5 - 8.5
5.5 - 6
- Multiple ChoicePlease save your changes before editing any questions.
The earth and atmosphere in which organisms live is called
Ecosystem
Biosphere
Biocoenosis
Ecosom
- Multiple ChoicePlease save your changes before editing any questions.
A lake with nutrients is called
Trophic
Eutrophic
Oligotrophic
Euphotic
- Multiple ChoicePlease save your changes before editing any questions.
Which of the following is an artificial ecosystem?
Rice field
Forests
Grassland
Lake
- Multiple ChoicePlease save your changes before editing any questions.
The biotic part of ecosystem includes
producers
consumers
decomposers
all of these
- Multiple ChoicePlease save your changes before editing any questions.
The organisms which live in the bottom of the lake are called
phytoplankton
zooplankton
nekton
benthos
- Multiple ChoicePlease save your changes before editing any questions.
Atmospheric humidity is measured by
photometer
potometer
auxanometer
hygrometer
- Multiple ChoicePlease save your changes before editing any questions.
Phytoplankton are important biotic component of
grassland ecosystem
pond ecosystem
forest ecosystem
none of these