NEET BIOLOGY

Detailed explanation-1: -Through photosynthesis, phytoplankton use sunlight, nutrients, carbon dioxide, and water to produce oxygen and nutrients for other organisms. With 71% of the Earth covered by the ocean, phytoplankton are responsible for producing up to 50% of the oxygen we breathe.

Detailed explanation-2: -Oxygen is produced by photosynthesizing organisms that live in the ocean, in fresh water, and on land. These organisms include bacteria, algae and plants. Photosynthesizing algae in the ocean produce around 70% of oxygen in the atmosphere.

Detailed explanation-3: -As autotrophic organisms, algae convert water and carbon dioxide to sugar through the process of photosynthesis. Photosynthesis also generates oxygen as a byproduct, contributing to the survival of fish and other aquatic organisms.

Detailed explanation-4: -Algae & Oxygen Production The most impressive algal species is Prochlorococcus. Despite Prochlorococcus being the smallest photosynthetic organism on Earth, it produces the most oxygen in the ocean.

Detailed explanation-5: -The primary source of oxygen for a pond is from microscopic algae (phytoplankton) or submerged plants. In the presence of sunlight, these produce oxygen through photosynthesis and release this oxygen into the pond water.