A heterocyst is
A. a type of spore
B. a terminally differentiated cell that fixes nitrogen
C. the progenitor of cyanobacterial vegetative cells
D. a cell that carries out oxygenic photosynthesis
Answer:B
A heterocyst is
A. a type of spore B. a terminally differentiated cell that fixes nitrogen C. the progenitor of cyanobacterial vegetative cells D. a cell that carries out oxygenic photosynthesis