Which of the following accurately describes the role of ammonification in the nitrogen cycle?
Conversion of atmospheric nitrogen into ammonia by nitrogen-fixing bacteria
Conversion of ammonia into nitrites by nitrifying bacteria
Conversion of organic nitrogen into ammonia by decomposers
Conversion of nitrates into atmospheric nitrogen by denitrifying bacteria
Related Questions
In the phosphorus cycle, weathering makes phosphate available first to
Decomposers
Consumers
Producers
All of these
Which one of the following is a gaseous cycle?
Nitrogen cycle
Phosphorus cycle
Sulfur cycle
Rock cycle
The exchange pool in the carbon cycle is
Fossil fuels
Sedimentary rock
Water
Atmosphere
The major source of sulfur in the ecosystem is:
Atmosphere
Ocean water
Rocks and minerals
Volcanic eruptions
What is true about the phosphorus cycle?
I. Rocks are the natural reservoirs of phosphorus
II. Weathering of sedimentary rocks makes phosphate available to the soil
III. Herbivores and carnivores obtain phosphorus from plant directly or indirectly
Choose the correct option
I and II
I and III
II and III
I, II and III
The process of converting atmospheric nitrogen into a usable form for plants is known as:
Nitrification
Denitrification
Ammonification
Nitrogen fixation
The reservoir for the sedimentary cycle exists in
Earth crust
Organic sediments
Calcareous sediments
Limestone
Reservoir for phosphorus cycle is
Troposphere
Lonosphere
Located in Earthโs crust
Stratosphere
Which of the following organisms play a crucial role in the ammonification step of the nitrogen cycle?
Nitrogen-fixing bacteria
Nitrifying bacteria
Denitrifying bacteria
Decomposers
The loss of water vapor from the stomata and other aerial parts of a plant is called:
Transpiration
Guttation
Respiration
Photosynthesis