Some algae are unicellular i.e. their bodies are composed of only one cell.
They can only be seen under a microscope.
The largest algae are giant seaweeds some of which grow to over 50 meters
long. They contain the green pigment chlorophyll and can produce, food by
photosynthesis.
Green algae are formed in the sea, in fresh water, and in damp places on
land. They occur as single cells, hollow bellow of cells, and fine threads.
 |
Green Alga |
Algae are of four types.
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Rad Alga |
01.
Green algae
02.
Brown algae
03.
Red algae
04.
Diatoms
Diatoms are microscopic, single celled algae whose cell walls are made of
silica.
Some examples for green algae are,
01.
Chlamydomonas
02.
Ulva
03.
Spirogyra
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Ulva |