In noncyclic photophosphorylation, o2 is released from
a) co2.
b) h2o.
c) chlorophyll.
d) sunlight.
e) c6h12o6.

The correct answer is: B) H2O

Non-cyclic photophosphorylation is a light reaction and it occurs in the thylakoid membrane and it involves two different chlorophyll photosystem.

Non-cyclic photophosphorylation is a reaction where a water molecule is broken down into 2H+ + 1/2 O2 + 2e− . This process is called photolysis. The  2H+ and 1/2O2 from the water are left out for further use, while two electrons are kept in photosystem II.