Biogeochemical Cycles

Front

In the nitrogen cycle, the bacteria that replenish the atmosphere with N2 are: Denitrifying bacteria, Nitrogen-fixing bacteria, Nitrifying bacteria, Ammonifying bacteria

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Denitrifying bacteria

Front

Carbon dioxide is returned to the atmosphere primarily by:
- consumption by animals
- combustion and cellular respiration by consumers
- elimination of waste by animals
- photosynthesis by producers

Back

combustion and cellular respiration by consumers

Front

Carbon cycles through the biosphere in all of the following processes EXCEPT: photosynthesis, transpiration, burning of fossil fuels, decomposition of plants and animals.

Back

transpiration

Front

Nitrogen fixation is carried out mainly by

Back

bacteria

Front

Which step of the water cycle requires living organisms? Options: Transpiration, Condensation, Evaporation, Precipitation

Back

Transpiration

Front

Multi-cellular eukaryotic autotrophs belong to which kingdom?

Back

Plantae

Front

Which adaptation do ferns, gymnosperms, and angiosperms have that mosses do not have?

Back

Vascular tissue