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Total questions: 10
Worksheet time: 5mins
There is always a cycle of CO2 running in the atmosphere due to which the concentration of CO2 remains constant in the atmosphere. Choose the correct sequence of this cycle:
CO2 in atmosphere→ decomposers → organic carbon in animals → inorganic carbon in soil
CO2 in atmosphere → organic carbon in plants →organic carbon in animals → inorganic carbon in soil
Inorganic carbonates in water →organic carbon in plants → organic carbon in animals → scavengers.
Organic carbon in animals → decomposers → CO2 in atmosphere →organic carbon in plants
The amount of nitrogen in the atmosphere is maintained by a biological cycle which involves two processes, first is to withdraw nitrogen from the atmosphere and secondly to add the same to atmosphere.
Nitrogen fixation and nitrification
Nitrogen fixation and denitrification
Nitrification and denitrification
Nitrification and nitrogen fixation
Presence of the fertilizers and sewage in polluted water provides a lot of nitrogen, causing excessive growth of algae which subsequently reduces the amount of dissolved oxygen in water. Can you name this process of reduction of dissolved oxygen due to the excess growth of algae.
Biomagnifications
Eutrophication
Algal bloom
Decomposition
Burning of fossil fuels add
CO2, SO2, NO2, gases in air
C, SO2, N2, gases in air
CO, SO3, NO3, gases in air
CH4, CO2, NO2, gases in ai
Molecules of proteins contain
Carbon
Nitrogen
Oxygen
All of the above
(a) breeze is the movement of wind from land to sea.
All cellular process needs (a) to occur.
Washing away of soil particles and exposure of underneath rocks is known as (a)
Pseudomonas is an example of (a) bacteria.
(a) bacteria helps in nitrification process of the nitrogen cycle .
