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Single-celled organisms they are found in both salt water and fresh water. As with all algae, diatoms get their energy from photosynthesis.

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Transcript of Diatoms

Diatoms Diatoms are single-celled orgainisms. They are found in both salt and fresh water. many diatoms are very unusual in shape and size.The cells are inclosed i na shell with two parts. piles of diatoms shells deposited over millions of years of fine, crumbly substance that is used in silver polish, toothpaste, filters, and insulation. the cell wall of a diatom contains silica, cellulose, and a ridgid glass like substance. diatoms get energy from photosynthesis. Dinoflagellates! single celled algae, that live primarily in salt water. Although SOME live in fresh water. Dinoflagellates have two whiplike strandes called flaglla. the beating of flaglla causes the cell to spin! they ALSO get energy from photosynthesis~! some of these dinoflagellates are red and poisenious. they multiply rapidly and turn water red, causing red tide- a poisen in the water that causes the water to be red and causes animals in the sea to get sick. Plantlike protists: Algae! Euglenoids! single celled protists that live primarily in fresh water. most have characteristics of both plants and animals. like plants, they ALSO use photosynthesis. they can become consumers when light is low, like animals. Flagella propel the orgainisms through the water. some DONT have chloroplasts for photosynthesis. these species either consume other small protists or absorb disolved nutrients.
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