Description : Oxygen liberated during photosynthesis is coming from : (1) Carbon dioxide (2) Water (3) Bresk down of chlorophy II (4) Atmosphere
Last Answer : (2) Water Explanation: Oxygen liberated during photosynthesis is coming m6t.o create a stable, unstirred layer to support surface neutralization of acid and act as a protective physical barrier against luminal pepsin.
Last Answer : Water