AP BIOLOGY

Detailed explanation-1: -The oxygen released during photosynthesis is from the water. The plants will absorb water as well as carbon dioxide during photosynthesis. Later these water molecules are converted into oxygen and sugar. The oxygen is then released into the atmosphere whereas the sugar molecules are stored for energy.

Detailed explanation-2: -During the process of photosynthesis, water is split in a process called photolysis. Photolysis is a process where sunlight energy is used to split water into oxygen and hydrogen molecules. Oxygen is then exhaled through the stomata and into the atmosphere.

Detailed explanation-3: -Photolysis of water is a process that breaks the hydrogen and oxygen of water that remains in the plant. This process takes place with the help of sunlight and it occurs in the grana of the chloroplast.

Detailed explanation-4: -By using light energy, water is split to form oxygen, and hydrogen and electron are released. This is known as the photolysis of water. Water acts as a reducing agent that provides H+ ions and it converts NADP to NADPH. The different dissolved mineral is absorbed by the plants along with the water.

Detailed explanation-5: -The ocean produces oxygen through the plants (phytoplankton, kelp, and algal plankton) that live in it. These plants produce oxygen as a byproduct of photosynthesis, a process which converts carbon dioxide and sunlight into sugars the organism can use for energy.