Quiz on nitrogen cycle 1.What is the most common way that nitrogen fixation occurs? A. Lightning B. Nitrogen fixation bacteria C. Fossil fuel combustion D. forest fire
Answers
Explanation:
it occurs naturally in the air by N0x production by lightining ...
Answer:
B. Nitrogen fixation bacteria
Explanation:
Nitrogen-solving micro organism, microorganisms able to reworking atmospheric nitrogen into constant nitrogen (inorganic compounds usable with the aid of using plants). More than ninety percentage of all nitrogen fixation is effected with the aid of using those organisms, which therefore play an vital function withinside the nitrogen cycle. Two types of nitrogen-solving micro organism are recognized. The first type, the free-living (nonsymbiotic) micro organism, consists of the cyanobacteria (or blue-inexperienced algae) Anabaena and Nostoc and genera which include Azotobacter, Beijerinckia, and Clostridium. The 2d type accommodates the mutualistic (symbiotic) micro organism; examples consist of Rhizobium, related to leguminous plants (e.g., numerous contributors of the pea family); Frankia, related to positive dicotyledonous species (actinorhizal plants); and positive Azospirillum species, related to cereal grasses.
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