Tuesday, May 21, 2013

Biology notes on the "Phyla of Protists." This Phyla includes algea, protists, sponges, etc.

Phyla of Protists * spark drug convolute pseudopodia *Have prongy shells do of silica *photosynthetic protists; flock be multicellular *Move using flagella *Move using cilia *Fungus like protists * frame resistant spores An interesting class of protists consists of amoebas and forams. These protists ar distinguished by their unique form of locomotion, in which they use extensions of cytoplasm. Amoebas and forams argon unicellular heterotrophs. Amoebas, members of the phylum Rhizopoda, argon protists that live in neat and salt amnionic fluid and are especially rife in soil. Because there is no cell wall or flagella, it is passing flexible. It moves through its environment using extensions of cytoplasm called pseudopodia, from the Grecian oral communication pseudo, significance false, and podium, meaning foot. Meiosis and cozy breeding do not occur in amoebas. They reproduce by fission, alone dividing into twain new cells. Forams, members of the phylum Foraminifera, are marine protists that live in moxie or attached to former(a) organisms or rocks. Forams are characterized by their porous shells, called tests. Tests usually give way many house lay out in a roll shape resembling a slender snail and consisting of organic material that contains grains of calcium carbonate. Long, slim projections of cytoplasm extend through the pores in the tests to aid in move and in capturing prey.
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Diatoms, members of the phylum Baccillariophyta, are photosynthetic, unicellular protists with unique double shells do of silica. Their shells are like downcast boxes with lids, one half(a) fitting inner the other. Abundant in oceans and lakes, diatoms are grand food producers. Diatoms can have one of two types of residual: radial (like a wheel) or bilateral (two-sided). internal reproduction in diatoms is rare. The solid ground Protista also contains both(prenominal) of the fast-breaking growing and around photosynthetically productive organisms-the algae. The three kinds of algae are green algae, rubor algae, and... If you want to get a generous essay, order it on our website: Ordercustompaper.com

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