Make your own free website on Tripod.com
KINGDOM PROTISTA
KINGDOM PROTISTA
Members of this kingdom are
made up of a complex eukaryotic cell,
some members make their own food,
and some take food in from an outside source.
General information:
   Much more complicated than monerans
   Cell is somewhat like the whole body of a plant or animal "stuffed" into a single cell
   Has many specialized parts that carry out specific functions of living
   Example: We have legs for walking that are made of many cells. Protists use special parts of its SINGLE cell as "legs"
   Cells are so complex that they are often thousands of times larger the one of our own cells in our body.
Phyla:

Diatoms
   Covered by two shells that fit together like a pill box
   Float on the surfaces of fresh and salt water
   Food is stored within their cells as small drops of "oil"
   Much of our petroleum may be the stored food of diatoms that lived millions of years ago

Dinoflagellates
   Have two whip-like tails for movement
   Make their own food
   Live on the surface of water
   Overpopulation can leave water smelling and tasting bad

Euglena
   Biologists used to think they where plants or animals
   They are protists because of their specialized structures within each cell
   Have green pigments to make their own food through photosynthesis
   Have a kind of an "eye"
   Swim to move about
   Appear to have a mouthlike structure
Protozoans
   Pursues, catches and swallows its food
   Grouped into classes according to the way they move about (only 4 classes are shown below)
Classes of Protozoans
1.Sarcodines
   Resemble small masses of cloudy gelatin
   Move by pushing out parts of their cell membranes
   Fluids in these parts of the cell flow in the direction they are moving
2.Ciliates
   Are covered by short hairlike structures called cilia
   The cilia contract in "waves" to push the organism along
   Cilia movement may "sweep" food into the mouthlike structures
3.Flagellates
   Move by using one or two whiplike tales called flagella
   Most live independently
   Some live inside other organisms
   Those that live inside other organisms may cause diseases such as African sleeping sickness
4.Sporozoans
   Live inside other organisms
   Most have no structures to move about
   Depend on their "host" for transportation
   Example: Malaria sporozoans are carried about in the human body by the bloodstream
Bitmap Image

Cilia & Flagella have the same basic structure , Cilia are shorter and much more numerous than flagella

eXTReMe Tracker