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Found Plankton 10 times.

Displaying results 1 to 10.

1. Class Bacillariophyceaea (diatoms)
There are about 10,000 species of diatoms; these organisms make up a major portion of ocean plankton and are also a major source of food for many small marine animals. Unlike other members of the division, diatoms sometimes reproduce sexually via a process called syngamy . Diatoms are encased in double shells which are made of silicon and fit together like two halves of a pillbox; some of these microscopic boxes are quite beautiful. These organisms are sometimes able to move around on their own by secreting cilia -like fibrils along a special groove called the raphe. Diatom shells are used as abrasives in silver polish and toothpaste, as filters, and in highway reflectors.

2. Division Pyrrophyta (fire algae)
This division is composed of marine organisms known as "fire" algae , so named because most of them are red in color. Fire algae are an important component of ocean plankton . The major class within this division is Class Dinophyceae, the dinoflagellate s. There are over 1100 species in this division. Members of Pyrrophyta are single-celled, photosynthetic organisms that move via two flagella . They store their food as starch , and their cell walls are made of cellulose . They usually reproduce asexually .

3. Foraminiferan
A type of protozoan which has a calcareous shell (shell made of calcium carbonate), often large enough to be seen by the naked eye. There are both bottom-dwelling and plankton ic species. Foraminifera are important index fossil s.

4. Index fossils
Fossils (or groups of fossils) which are used by geologists and paleontologist s to help correlate different events or processes in different parts of the world which happened at the same time. Species which make good index fossils are able to tolerate a wide range of ecological conditions, are geographically widespread, common, easy to find, and evolutionarily short-lived (that is, they speciated and then quickly became extinct). In general, they are also plankton ic and very small.

5. Phytoplankton
Small (often microscopic) aquatic plants suspended in water.

6. Phytoplankton
A floating layer of photosynthetic organisms, including algae, that are an important source of atmospheric oxygen and form the base of the aquatic food chain .

7. Plankton
Small (often microscopic) plants and animals floating, drifting or weakly swimming in bodies of fresh or salt water.

8. Planktonic organisms
"Floaters"; one of the two main types of organisms in the pelagic zone of the marine biome .

9. Zooplankton
A community of floating, aquatic, minute animals and nonphotosynthetic protist s.

10. Zooplankton
Small (often microscopic) aquatic animals suspended or weakly swimming in water.

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