Which combination of the following statements is correct for cyanobacteria?
P. They can perform oxygenic photosynthesis.
Q. Usually filamentous forms are involved in nitrogen fixation.
R. Nitrogen fixation occurs in heterocyst.
S. They cannot grow in a mineral medium exposed to light and air.
A. P, Q and R
B. P, S and R
C. Q, R and S
D. P, Q and S
Answer: Option A
This Question Belongs to Biotechnology Engineering >> Microbiology In Biotechnology
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