Protista Slides PDF

Protista slides Lab 7 Objectives: * Identify the kingdom of protista. * Identify the sections of the kingdom of protista. * Study some organisms of kingdom protista. Brief: protista are eukaryotes that are not members of the plant, animal or fungi kingdoms, members of this kingdom are grouped toge...

Protista slides Lab 7 Objectives: * Identify the kingdom of protista. * Identify the sections of the kingdom of protista. * Study some organisms of kingdom protista. Brief: protista are eukaryotes that are not members of the plant, animal or fungi kingdoms, members of this kingdom are grouped together because they do not fit into other kingdom, most of the protista organisms are unicellular except algae is multicellular. Kingdom protista classified into three main groups: 1- Plant _ like protists (Algae). 2- Animal _ like protists (Protozoa). 3- Fungus _ like protists. General Biology BIO 101 Protista slides Lab 7 1- Plant _ like protists (Algae). Contain chlorophyll and carry out photosynthesis, outotrophs. Commonly called algae. They may be unicelluler or multicellular. The main phyla of plant like protists: euglenophytes, chrysophytes, diatoms, dinoflagellates, Chlorophyta, Rhodophyta, phaeophyta. Accessory pigments help absorb light, give algae a variety of colors. There are three main types of algae: red, brown, and green. Euglenophytes Euglena: live in water and it is a unicelluler, have flagella for movement use. also, they contain chloroplasts for photosynthesis, but can turn into heterotrophs if they are kept in the dark. Eyespot used for sensing light and dark. Pellicle like a cell wall helps maintain their shapes. These organisms reproduce asexually. Left: Euglena structure. Right: Euglena under a microscope. General Biology BIO 101 Protista slides Lab 7 2- Animal _ like protists (Protozoa). Animal-like protists known as Protozoa. Protozoa are single-celled eukaryotes that share some traits with animals. Protozoa can move by flagella, cilia, or pseudopodia or they may not move at all. There are many different types of animal-like protists. They are different because they move in different ways. They are heterotrophs or parasites. The Protozoa divided into four phyla: Amoebalike protists, flagellates, ciliates, and spore-forming protists. Flagellates have long flagella, or tails. Flagella rotate in a propellerlike fashion, pushing the protist through its environment. An example of a flagellate is Trypanosoma. Other protists have what are called transient pseudopodia, which are like temporary feet. The cell surface extends out to form feet-like structures that propel the cell forward. An example of a protist with pseudopodia is the amoeba. The ciliates are protists that move by using cilia. Cilia are thin, very small tail-like projections that extend outward from the cell body. Cilia beat back and forth, moving the protist along. Paramecium has cilia that propel it. The sporozoans are protists that produce spores, such as the toxoplasma. These protists do not move at all. The spores develop into new protists. Left: amoeba under a microscope. Right: amoeba structure. General Biology BIO 101 Protista slides Lab 7 Left: Paramecium structure. Right: Paramecium under a microscope. 3- Fungus _ like protists. Fungus-like protists share many features with fungi. Like fungi, they are heterotrophs, They also have cell walls and reproduce by forming spores. Two major types of fungus-like protists are slime molds and water molds. Get their energy and nutrition like a fungus does, by releasing a digestive enzyme into the environment to break down large organic molecules into pieces small enough to absorb. Slime molde General Biology BIO 101