Protists Chapter 20 Objective: 11.0 Classify animals according to type of skeletal structure, method of fertilization and reproduction, body symmetry, body coverings, and locomotion. Examples: skeletal structure - vertebrates, invertebrates; fertilization- external, internal; reproduction -sexual, asexual; body symmetry- bilateral, radial, asymmetrical; body coverings- feathers, scales, fur; locomotion- cilia, flagella, pseudopodia
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Protists Chapter 20 Objective: 11.0 Classify animals according to type of skeletal structure, method of fertilization and reproduction, body symmetry,
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ProtistsChapter 20
Objective:11.0 Classify animals according to type of skeletal structure, method of fertilization and reproduction, body symmetry, body coverings, and locomotion.Examples: skeletal structure - �vertebrates, invertebrates;fertilization- external, internal;�reproduction -sexual, asexual;�body symmetry- bilateral, �radial, asymmetrical;body coverings- feathers, �scales, fur;locomotion- cilia, flagella, �pseudopodia
What is a Protist?Any eukaryote that is not an
animal, plant, or fungusMost are unicellular, but not
allCan be classified as animal-
like, plant-like, or fungus-like
Animal-like Protists (Section12-2)
Heterotrophs4 phyla, based on means of
movement: Zooflagellates – swim through their
aquatic environments using flagella Sarcodines – move via temporary
cytoplasmic projections called pseudopods Ciliates – use _________ for feeding and
movement Sporozoans – do not move on their own;
are parasites
ZooflagellatesCan generally absorb food
through their cell membranes Nutrients from decaying organic
matter in water From the bodies of other
organisms in which they liveReproduction can be asexual
by mitosis and cytokinesis, or sexual by meiosis.
SarcodinesPseudopods are used for feeding
and movement.EX: amoebasReproduce asexually by mitosis
Commonly called “algae”Seven major phyla, classified
according to a variety of cellular characteristics (types of chlorophyll or accessory pigments present): First 4 phyla are unicellular Last 3 contain many multicellular
organisms
1. EuglenophytesPlant-like, but have 2 flagella
(like ???) and no cell wallEyespot – cluster of reddish