Microbiology of Soils
A heterocyst is

the progenitor of cyanobacterial vegetative cells
a terminally differentiated cell that fixes nitrogen
a type of spore
a cell that carries out oxygenic photosynthesis

ANSWER DOWNLOAD EXAMIANS APP

Microbiology of Soils
Denitrification is

reduction of nitrate (NO3-) to nitrogen gas
reduction of nitrate to organic nitrogen compounds
both (a) and (b)
changing of atmospheric nitrogen (N2) to nitrogen compounds

ANSWER DOWNLOAD EXAMIANS APP

Microbiology of Soils
Syntrophism involves

exchange of nutrients among species
no exchange of nutrients between two species
exchange of nutrients between two species
no exchange of nutrients among species

ANSWER DOWNLOAD EXAMIANS APP