WorksheetsNitrogen cycle⛈
Total questions: 18
Worksheet time: 14mins
what are the two inorganic forms of nitrogen tthe plants can assimilate?
oxygen and carbon dioxide
Ammonia and carbon dioxide
Ammonia and nitrate
Ammonia and nitrite
Can animals and plants directly absorb nitrogen from the atmosphere, is this statement true or false
False
True
What is the main reservoir of nitrogen?
Water bodies
Plants
Atmosphere
Soil
fixation is the process of
conversion of N2 to forms that can be used to synthesize inorganic nitrogen compounds
conversion of Co2 to forms that can be used to synthesize organic carbonic compounds
conversion of N2 to forms that can be used to synthesize organic nitrogen compounds
conversion of H2O to forms that can be used to synthesize organic aqueous compounds
how is Nitrogen fixed naturally ?
Volcanic activity
Lighting
Greenhouse gases
bacteria
Fungs
Some plants contain nitrogen in there _________.
Leaves
Steam
Flower
Roots
why do animals and plants need nitrogen?
it helps to synthesize proteins
it helps to synthesize lipids
it helps to synthesize water
it helps to synthesize glucose
What is denitrification?
Conversation of nitrite back to nitrogen gas
Conversation of ammonia back to nitrogen gas
What is lable A
Gas
Nitrogen in the Atmosphere
Clouds
Carbon dioxide in the atmosphere
Arrange the following process of nitrogen cycle in proper sequence (i)Denitrification
(ii)Nitrogen Fixation
(iii)Ammonification
(iv)Nitrification
i-iii-iv-i
i-ii-iii-iv
iv-iii-ii-i
What is the step labeled x in the figure ?
ammonification
denitrification
nitrogen fixation
nitrification
Nitrogen fixation is the
Conversion of N2(nitrogen) to NO3-(nitrate)
Conversion of N2 to N
Conversion of N2 to urea
All of the above
Which of the following is correct regarding Nitrogen cycle?
N2 cycle is a sedimentary cycle
N is the most abundant nutrient for plants
The major reservoir of Nitrogen is atmosphere
All of these
Nitrogen accounts nearly 78% of the air. Still Nitrogen is the most limiting nutrient for plant growth because
N2 cannot be directly utilized by plants
High energy is required to break triple bond
Nitrogen is almost an inert gas as N involved reaction requires extreme conditions such as high temperature
All of the above
Majority of nitrogen fixation occurs by
Biological nitrogen fixing organisms
Lightning
volcanic eruptions
Haber–Bosch process
Ammonification is the process of
Formation of ammonia from nitrogen by nitrogen fixers
Formation of ammonia from amino acids by decomposers
Formation of ammonia from nitrates by nitrogen fixers
Formation of ammonia from nitrates by decomposers and bacteria in the soil
The conversion of Ammonia (NH3) to nitrite (NO2-) and then to nitrates (NO3-) is called
ammonification
Nitrification
Denitrification
Assimilation
The process that convert nitrates (NO3-) back to nitrogen gas (N2) there by replenishing N2 in the atmosphere is called
Nitrogen fixation
Deamination
Denitrification
Nitrification
