protists. the protist kingdom is very diverse. however, all protists are eukaryotes,or organisms...
TRANSCRIPT
Protists
The protist kingdom is very diverse.
However, all protists are eukaryotes,or organisms that have cells with nuclei.
Protists
All live in moist surroundings. Most are unicellular, but some are
multicellular. Some are heterotrophs, some are autotrophs, and some are both.
Animal-Like Protists- Protozoa Heterotrophs. Most can move from place to
place to get food. Many protozoans that live in fresh
water have contractile vacuoles. A contractile vacuole is a structure that expels water that has entered a cell through its cell membrane.
Sarcodines ( Amoeboid)
Move and feed by using pseudopods. Pseudopods are temporary bulges of the cell membrane that fill with cytoplasm.
Ciliates Ciliates are
covered with hairlike projections called cilia. They use cilia to move, obtain food, and sense the environment.
Zooflagellates-Symbiosis
Often, zooflagellates live inside the bodies of other organisms in a state of symbiosis.
Symbiosis is a close relationship between two species where at least one of the species benefits.
Symbiosis- Mutualism
In other cases, their relationship is one of mutualism, in which both the host and the zooflagellate benefit.
Fungus-like Protists
Like fungi, fungus-like protists are heterotrophs, have cell walls, and use spores to reproduce.
Unlike fungi, however, all fungus-like protists are able to move at some point in their lives.
Fungus-like Protists
Water molds and downy mildews grow as tiny threads in water or moist places. Slime molds live in moist soil and on decaying plants.
Plant-like Protists- Algae
All algae are autotrophs. Algae can exist in a variety of
colors because they contain many types of pigments—chemicals that produce color.