the protists. animal-like protists aka protozoa heterotrophic consume/ingest/eat material from...
DESCRIPTION
Type of Protozoans Classified according to locomotion 1.Sarcodina (pseudopod) 2.Mastigophora (flagellated) 3.Ciliophora (ciliated) 4.Sporozoa (parasitic) Peranema Amoeba Paramecium PlasmodiumTRANSCRIPT
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The Protists
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Animal-Like Protists
• AKA Protozoa• Heterotrophic• Consume/ingest/eat material from their
surroundings
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Type of Protozoans
• Classified according to locomotion
1. Sarcodina (pseudopod)
2. Mastigophora (flagellated)
3. Ciliophora (ciliated)
4. Sporozoa (parasitic)
PeranemaAmoeba
Paramecium
Plasmodium
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Sarcodina: Amoeba
• Single celled with no set body shape• Creates temporary projections of cytoplasm
called pseudopods to move and feed• Feed by endocytosis engulfing organisms with
their pseudopods
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Mastigophora: Peranema
• Found at the bottom of freshwater bodies• Morphologically similar to Euglena, without
the chloroplasts and eyespot• Captures and consume
live prey with the help of a rigid feeding apparatus called a “rod-organ”
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Ciliophora
• Covered with hair like projections called cilia• All these organisms are aquatic• They are the most advanced of the
protozoans, living in both fresh and saltwater
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Sporozoa
• Parasitic protozoans• Lack means of independent locomotion• Movements depend entirely on the host’s body fluids• Possess fewer organelles and specialized structures• Able to multiply asexually in animal tissues by
forming haploid reproductive cells, called spores• Spores mature into individuals without fertilization
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Sporozoa: Plasmodium
• Causes malaria in humans
• Complex life cycle involves two hosts: humans and mosquitoes• Insects that transmits
sporozoans from one host to the next are called insect vectors
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Fungilike Protists• Slime moulds• Prefer cool, shady, and moist places• During some stage of their life cycle, they may
resemble protozoans• At other time, they produce spores like fungi
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Fungilike Protist
• Some species converge into a large, slimy plasmodial mass and act like a single organism
• Role in the environment– Like Fungus, slime moulds consume dead organic
matter– Also consume bacteria and fungi
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Homework
• Text page 133– Questions: 4, 6, 9, 13