General Characteristics of Algae

General Characteristics of Algae - General Characteristics...

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General Characteristics of Algae Algae  are eukaryotic organisms that have no roots, stems, or leaves but do have chlorophyll and  other pigments for carrying out photosynthesis. Algae can be multicellular or unicellular.  Unicellular algae  occur most frequently in water, especially in plankton.  Phytoplankton  is the  population of free-floating microorganisms composed primarily of unicellular algae. In addition, algae  may occur in moist soil or on the surface of moist rocks and wood. Algae live with fungi in  lichens.   According to the Whittaker scheme, algae are classified in seven divisions, of which five are  considered to be in the Protista kingdom and two in the Plantae kingdom. The cell of an alga has  eukaryotic properties, and some species have flagella with the “9-plus-2” pattern of microtubules. A  nucleus is present, and multiple chromosomes are observed in mitosis. The chlorophyll and other 
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This note was uploaded on 11/11/2011 for the course BIO 101 taught by Professor Pesthy during the Fall '07 term at Texas State.

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