Which class of microflora would you expect to be most active under following conditions. 
i ) In rice paddies requiring nitrogen - blue-green algae 
ii) In acid soils  -  soil fungi
iii ) In the  decomposition of the most resistant organic compounds - soil fungi and soil actinomycetes
iv)  In fixing atmospheric nitrogen - symbiotic and nonsymbiotic nitrogen fixing bacteria
v)  Where photosynthesis occurs - soil algae