Question

In oxygen cycle which group of organism replenishes a large portion of atmospheric oxygen supply

Answer 1

Answer:

Phytoplankton absorb both across their cell walls. In the process of photosynthesis, phytoplankton release oxygen into the water. Half of the world's oxygen is produced via phytoplankton photosynthesis

Answer 2

Answer: Phototrophs

Explanation:

The phototrophs including the plants and marine planktons are responsible for replenishment of oxygen in the atmosphere. As these organisms take up the carbon dioxide from the atmosphere along with water in the presence of sunlight produces fresh oxygen gas which replenishes the atmosphere. The entire process is called as photosynthesis.