NEET BIOLOGY

Detailed explanation-1: -Phytoplankton are mostly microscopic, single-celled photosynthetic organisms that live suspended in water. Like land plants, they take up carbon dioxide, make carbohydrates using light energy, and release oxygen.

Detailed explanation-2: -Prochlorococcus and other ocean phytoplankton are responsible for 70 percent of Earth’s oxygen production.

Detailed explanation-3: -The oceans cover 71% of the Earth’s surface, providing over half of the world’s oxygen. While aquatic plants produce some oxygen, it is, in fact, single-celled organisms called algae that produce the majority of our atmospheric oxygen.

Detailed explanation-4: -Algae are called living organisms. They possess chlorophyll that helps in photosynthesis. They are considered plant-like protists. They are simple organisms that lack complex plant organs such as roots, stems, and leaves.

Detailed explanation-5: -Also, according to the National Geographic website, students have calculated that 70% of the Earth’s oxygen is produced by phytoplankton (Prochlorococcus) as well as other aquatic plants while the forest and other inland plant and trees produce only 28% of the oxygen we breathe!