Nitrogen Cycle

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

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

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