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- Algae - Encyclopedia. com
Algae (singular: alga) are photosynthetic, eukaryotic organisms that do not develop multicellular sex organs Algae can be unicellular, or they may be large, multicellular organisms Algae can occur in salt or fresh waters, or on the surfaces of moist soil or rocks The multicellular algae develop specialized tissues, but they lack the true
- Green Algae - Encyclopedia. com
Chlorophyta (green algae) Division of algae which are typically green in colour In common with higher land plants, green algae include chlorophylls a and b among their principal pigments, have cellulose as the main constituent of cell walls, and form food reserves of starch Consequently it is believed that the ancestors of land plants must
- Blue-green Algae - Encyclopedia. com
Blue-green algae [1] Blue-green algae [2] are actually a type of bacteria that is known as cyanobacteria In their aquatic habitat, cyanobacteria are equipped to use the sun's energy to manufacture their own food through photosynthesis
- Protista - Encyclopedia. com
The golden algae (Chrysophyta) and brown algae (Phaeophyta) include many familiar seaweeds easily found on rocky coasts Kelp is a gigantic marine brown alga ( Macrocystus ) that grows up to 30 meters (100 feet) long and forms dense "forests" in some coastal waters
- Pyrrophyta - Encyclopedia. com
Cryptomonads themselves are the evolutionary result of endosymbiosis, and are chimeric species that evolved from ancestral red algae and a non-photosynthetic host that retained the red alga nucleus under the form of a bead-like nucleomorph chromosome The highly condensed chromosome of this Pyrrophyta consists of three different bead-like
- Dinoflagellata - Encyclopedia. com
dinoflagellates A division (Dinoflagellata) of protists that are heterotrophs but closely allied to brown algae and diatoms (they are sometimes classified as algae) Many have brown or yellow chromoplasts containing xanthophyll and chlorophylls a and c; others are colourless Typically, dinoflagellates have two flagella, one propelling water to
- Diatoms - Encyclopedia. com
Ecologically vital, algae account for roughly half of photosynthetic production of organic material on Earth in both freshwater and marine environments Algae exist either as single cells or as multicellular organizations Diatoms are microscopic, single-celled algae that have intricate glass-like outer cell walls partially composed of silicon
- Protozoa - Encyclopedia. com
The amoeba, for example, is capable of detecting chemicals given off by potential food particles such as diatoms, algae, bacteria, or other protozoa As the cell wall has no definite shape, the cytoplasm can extrude to form pseudopodia (Greek: pseudes , false; pous , foot) in various sizes and at any point of the cell surface
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