Small photosynthetic organisms, mostly algae and bacteria, found inhabiting aquatic ecosystems. Also see plankton and zooplankton.

[Gk. phyton, plant + planktos, wandering] Aquatic, free-floating, microscopic, photosynthetic organisms.

A density of plant material

1897, from phyto- + plankton.

microscopic organism that lives in the ocean and can convert light energy to chemical energy through photosynthesis.

Tiny, free-floating, photosynthetic organisms in aquatic systems. They include diatoms, desmids, and dinoflagellates.

green microscopic plants, typically algae but including diatoms, desmids, and dinoflagellates. Upon their photosynthetic selves hang the food webs of the oceans.

a miniscule plant which grows and lives in the upper layers of the ocean and which forms the basis of the marine food chain or web.

noun Definition: very small plant life often found swimming in water Example Sentence: Phytoplankton is an important energy source in marshes.

small or microscopic photosynthetic organisms that float or drift in great numbers in fresh or salt water near the surface and are the base of the ocean food chain

Microscopic aquatic organisms that, like plants, use photosynthesis

the community of predominantly single cell plants inhabiting the water mass

Microscopic algae that are suspended in the water column.

biology - free-floating microscopic aquatic plants

Microscopic aquatic organisms that, like plants, use photosynthesis

Microscopic photosynthesising organisms that live in the upper, sunlit areas of bodies of water.

Free-floating, mostly microscopic aquatic plants.

planktic plants such as algae, diatoms and coccolithophorids that help regulate the concentration of carbon dioxide in the ocean and atmosphere

The plant forms of plankton. Phytoplankton are the dominant plants in the sea, and are the basis of the entire marine food web. These single-celled organisms are the principal agents of photosynthetic [..]

(n) photosynthetic or plant constituent of plankton; mainly unicellular algae

floating microscopic plants that obtain their energetic requirements through photosynthesis.

Tiny single-celled free-floating organisms collectively known as phytoplankton are comprised of chlorophyll. They are the photosynthesizing organisms of plankton, and influence ocean colour.

Minute, free-floating aquatic plants.

Microscopic, single-celled plants and other photosynthetic organisms that inhabit the upper, sunlit waters of the ocean.

Microscopic plants that live in salt and fresh water environments.

photosynthetic or plant constituent of plankton; mainly unicellular algae. (Compare to zooplankton.)

The photosynthesizing organisms residing in the plankton

That portion of the plankton community comprised of tiny plants (e.g., algae and diatoms).

Phytoplankton is a type of plankton that produces complex organic compounds from simple inorganic molecules. This can be achieved by using energy from light (by photosynthesis) or through inorganic ch [..]

The collective term for the photosynthetic members of plankton

The microscopic floating plant life of the oceans; the basic food source for most marine life.

The floating, usually tiny, plant life living in a body of water.

The collective term for the photosynthetic members of plankton

The component of plankton consisting of microscopic plants.

Microscopic plants that live in the ocean (http://earthobservatory.nasa.gov/Library/Phytoplankton/).

The single-cell component of plankton.

Planktonic marine plants. See the SAHFOS Marine Climate Change Encyclopaedia at www.sahfos.org/Climate Encyclopaedia/index2.html

Autotrophic component of the plankton that drift in the water column. Microscopic floating plants, mainly algae, that live suspended in bodies of water and that drift about because they cannot swim ef [..]

Small, usually microscopic plants (such as algae), found in lakes, reservoirs, and other bodies of water.

Microscopic algae suspended in the water column. They contains pigments known as chlorophylls and phaeophytons which make eutrophic waters look green or brown.

That portion of the plankton community comprised of tiny plants; e.g. algae, diatoms.

That portion of the plankton community comprised of tiny plants; e.g. algae, diatoms.

Free-floating minute organisms that are photosynthetic. The term is non-taxonomic and refers to a Lifestyle (energy utilization and motility), rather than a particular type of organism. Most, but not [..]

Free-floating minute organisms that are photosynthetic. The term is non-taxonomic and refers to a lifestyle (energy utilization and motility), rather than a particular type of organism. Most, but not [..]

Small or microscopic photosynthetic organims that live near the surface of the water where light is available to create energy. This group includes diatoms, cyanobacteria, and some types of algae.

Microscopic, plant-like marine organisms (mostly algae and diatoms), which are responsible for most of the photosynthetic activity in the oceans. Phytoplankton are the base of the ocean food web, and [..]

Planktonic plants that are mostly microscopic in size. They include microalgae. Planktonic organisms typic-ally have little or no power of self-locomotion, and thus drift with the water currents.

Tiny plants found in water.

Single-celled plant plankton. See zooplankton.

Small, usually microscopic plants (such as algae), found in lakes, reservoirs, and other bodies of water.

Very small plant organisms that drift with water currents and, like land plants, use carbon dioxide, release oxygen and convert minerals to a form animals can use.

Microscopic plants that drift in the water of an aquatic ecosystem.

Tiny, single-celled planktonic plants. Also called algae. Phytoplankton are the primary producers of food and oxygen in the Bay food web.

Small photosynthetic organisms, mostly algae and bacteria, found inhabiting aquatic ecosystems. Also see plankton and zooplankton.

free-floating, mostly microscopic aquatic plants.

microscopic plants that live in water bodies; since phytoplankton depend upon certain conditions for growth, they are a good indicator of change in their environment

Minute plants that use light to make food from carbon dioxide.

Microscopic plants that float or drift almost passively in oceans, lakes, or rivers.

the microscopic, photosynthetic organisms that float near the surface of marine or fresh water and that are the basic source of food in many aquatic ecosystems; examples include algae and cyanobacteri [..]

plant plankton cf. Plankton.

The floatingg and swimming algae and prokaryotic organisms of lakes and oceans.

The tiny plants of the plankton.

Microscopic, photosynthetic bacteria and algae that live suspended in the water of lakes and oceans.