NEET BIOLOGY

Detailed explanation-1: -Prochlorococcus and other ocean phytoplankton are responsible for 70 percent of Earth’s oxygen production.

Detailed explanation-2: -Plankton that are plants, known as phytoplankton, grow and get their own energy through photosynthesis and are responsible for producing an estimated 80% of the world’s oxygen.

Detailed explanation-3: -Larger phytoplankton are single-celled algae also known as protists-tiny organisms that also contain chloroplasts. Many photosynthetic protists are capable of movement and some also hunt and eat other single-celled organisms.

Detailed explanation-4: -Scientists estimate that roughly half of the oxygen production on Earth comes from the ocean. The majority of this production is from oceanic plankton-drifting plants, algae, and some bacteria that can photosynthesize. One particular species, Prochlorococcus, is the smallest photosynthetic organism on Earth.

Detailed explanation-5: -Prochlorococcus bacteria are so small about 20, 000 of them fit in a single drop of seawater. They live in a wide swath of the world’s oceans. There are somewhere around 3 billion billion billion Prochlorococcus cells in all. Together, they produce 5 to 10 percent of the oxygen we breathe.