Question

Oxygen gas is an important byproduct of photosynthesis for animals and other organisms. What is true about how oxygen gas is produced during photosynthesis?

A) Water is split apart during the Calvin cycle and results in oxygen gas.
B) Carbon dioxide is split apart during the Calvin cycle and results in oxygen gas.
C) Carbon dioxide is split apart during the Light reactions and results in oxygen gas.
D) Water is split apart during the Light reactions and results in oxygen gas.

Answer 1

Oxygen gas is produced during photosynthesis when water is split apart during the Light reactions.

Step-by-step explanation:

Oxygen gas is produced during photosynthesis when water is split apart during the Light reactions. The light reactions occur in the presence of sunlight and involve the absorption of energy from sunlight by chlorophyll. This energy is used to split water molecules, releasing oxygen as a byproduct.