what is plankton?

Answer 1

Plankton refers to any seabound organism that can't swim against the current, drifters.

Phytoplankton

Phytoplankton are minute (extremely small) plants that float on the surface or in the sunlight zone. They live up here because they use the sun to get energy. This proces known as photosynthesis, uses sunlight along with carbon and water to produce starches and release energy and oxygen. Phytoplankton support life on Earth via this function. Phytoplankton reproduce asexually: the organism splits in half and produces a new copy of itself. Phytoplankton are consumed by a wide range of sea animals, notably by zooplankton, after they die and float downward.

Zooplankton

Meaning 'animal', the prefix zoo denotes a group of animal plankton. Likewise, they cannot swim themselves. These animals are detrivores and omnivores. They eat each other, phytoplankton, and decaying matter.

Plankton consists of any drifting organism, such as animals, plants or bacteria. They inhabit the pelagic zone of oceans, seas, or any other bodies of fresh water.

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These are microscopic organisms, similar to phytoplankton, who consume other plankton and digest waste. Some look like microscopic shrimp and others may look like tiny floating insects, depending on the type.
Plankton are microscopic organisms that live in water. They consist of small crustaceans,protozoans and diatoms.

Answer 2

the microscopic organisms drifting or floating in the sea or freshwater, consisting chiefly of diatoms, protozoans, small crustaceans, and the eggs and larval stages of larger animals. Many animals are adapted to feed on plankton, especially by filtering the water: Compared with nekton.