Chapter 12,part C The Eukaryotes:Fungi,Algae,Protozoa,and Helminths
Copyright © 2004 Pearson Education, Inc., publishing as Benjamin Cummings B.E Pruitt & Jane J. Stein Chapter 12, part C The Eukaryotes: Fungi, Algae, Protozoa, and Helminths
The Protozoa TABLE 12.1 Major Differences Among Eukaryotic Microorganisms: Fungi,Algae,Protozoa,and Helminths Fungi Algae Protozoa Helminths Kingdom Fungi Protist Protist Animalia Nutritional type Chemoheterotroph Photoautotroph Chemoheterotroph Chemoheterotroph Multicellularity All,except yeasts Some None All Cellular arrangement Unicellular,filamen- Unicellular,colonial, Unicellular Tissues and organs tous,fleshy (such filamentous; as mushrooms) tissues Food acquisition Absorptive Absorptive Absorptive;ingestive Ingestive (mouth); method (cytostome) absorptive Characteristic Sexual and asexual Pigments Motility;some Many have elaborate features spores form cysts life cycles,includ. ing egg,larva, and adult Embryo formation None None None All Table 12.1
The Protozoa Table 12.1
Protozoa 。Eukaryotic 。Unicellular 。Chemoheterotrophs 。Vegetative form is a Macronucleus trophozoite Micronucleus Asexual reproduction by fission,budding,or schizogony 。Sexual reproduction by conjugation 。Some produce cysts Figure 12.16
• Eukaryotic • Unicellular • Chemoheterotrophs • Vegetative form is a trophozoite • Asexual reproduction by fission, budding, or schizogony • Sexual reproduction by conjugation • Some produce cysts Protozoa Figure 12.16
Archaezoa 。No mitochondria Flagella 。Multiple flagella 。Giardia lamblia Trichomonas vaginalis Undulating membrane (no cyst stage) Axostyle (b)Trichomonas vaginalis (c)Giardi lamblla (d)Giardialamblia cyst Figure 12.17b-d
• No mitochondria • Multiple flagella • Giardia lamblia • Trichomonas vaginalis (no cyst stage) Archaezoa Figure 12.17b-d
Microspora ·No mitochondria 。Nonmotile Intracellular parasites 。Nosema
• No mitochondria • Nonmotile • Intracellular parasites • Nosema Microspora