the protozoans l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
The Protozoans PowerPoint Presentation
Download Presentation
The Protozoans

Loading in 2 Seconds...

play fullscreen
1 / 26

The Protozoans - PowerPoint PPT Presentation


  • 448 Views
  • Uploaded on

The Protozoans. Ciliates Amoeboid Protozoans Flagellated Protozoans. Kingdom Protozoa. Defining Characteristics All are unicellular eukaryotes What is a prokaryote ? Many species are both heterotrophic and autotrophic simultaneously or at different stages of the lifecycle .

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'The Protozoans' - Lucy


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
the protozoans

The Protozoans

Ciliates

Amoeboid Protozoans

Flagellated Protozoans

Kingdom Protozoa

kingdom protozoa
Kingdom Protozoa
  • Defining Characteristics
    • All are unicellular eukaryotes
    • What is a prokaryote?
    • Many species are both heterotrophic and autotrophic simultaneously or at different stages of the lifecycle

Kingdom Protozoa

adaptability
Adaptability
  • Protozoans are ecologically important primary producers, consumers and as vital links in the food chain
  • Humans are greatly effected by parasitic protozoans either directly or indirectly
    • Effects range from irritating - fatal
      • Malaria (Plasmodium spp.) worldwide epidemic

Kingdom Protozoa

reproduction
Reproduction
  • Asexual reproduction
    • Replication of chromosomes and the splitting of the parent into two or more parts
    • Binary fission
    • Multiple fission
    • Budding
  • Protozoans are problematic in their associations as colonial forms

Kingdom Protozoa

asexual reproduction
Asexual Reproduction

Amoeba

Flagellate

Ciliate

Kingdom Protozoa

classification
Classification

Kingdom Protozoa

Phylum Ciliophora (Ciliates)

The Sarcodinids (Amoeboid Protozoans)

Phylum Foraminifera

Phylum Radiozoa

The Flagellated Protozoans

Phytoflagellated protozoans

Zooflagellated protozoans

Kingdom Protozoa

phylum ciliophora

Paramecium feces

Phylum Ciliophora
  • Defining characteristics
    • Body externally ciliated in at least some lifecycle stages
  • Have the highest degree of subcellular specialization and are considered advanced protozoans

Kingdom Protozoa

cilia
Cilia
  • Cilia
    • Hair-like structures by which the organism moves, collects food and senses their surroundings
  • Fastest of all the protozoans

Cilia structure

Kingdom Protozoa

ciliate biology
Ciliate Biology
  • Oral groove
  • Cytostome
  • Cytoproct
  • Contractile vacuole

Paramecium

ciliate lifestyles
Ciliate Lifestyles
  • 65% of all ciliate species are free-living and mobile
  • Some ciliates form colonial aggregations and have sessile habits
  • Other ciliates have symbiotic relationships in invertebrates and vertebrates

Vorticella

Kingdom Protozoa

the sarcodinids amoeboid protozoans
Contains 4 phyla: Foraminifera, Radiozoa, Amoebozoa, and Heliozoa

Most reproduce asexually through binary fission

Characterized by pseudopodia

Food is usually captured by phagocytosis

Body types range from free flowing to rigid with skeletal supports

The Sarcodinids (Amoeboid Protozoans)

Kingdom Protozoa

phagocytosis
Phagocytosis

Kingdom Protozoa

amebas and humans
Amebas and Humans

Kingdom Protozoa

phylum foraminifera
Phylum Foraminifera
  • Defining characteristics
    • Individuals secrete multi-chambered tests, generally made of calcium carbonate (CaCo3)

Foram. tests

Kingdom Protozoa

foraminiferans
Foraminiferans
  • Extremely abundant, most are benthic and marine
  • Feed on diatoms and algae, very slow movers
  • Organisms are extremely common and form ooze
    • White cliffs of Dover are foraminiferan tests

Kingdom Protozoa

phylum radiozoa
Phylum Radiozoa
  • Defining characteristics
    • Body is divided into distinct zones separated by a perforated membrane or capsule
  • Have pseudopodia supported with thin microtubules that give a spiny rayed appearance

Kingdom Protozoa

radiolarians
Radiolarians
  • Have shells made of silicon dioxide that can be very intricate
  • Feed on diatoms and other phytoplankton
  • Benthic individuals move by use of pseudopodia
    • Can occur in large concentrations that form ooze as well

Kingdom Protozoa

the flagellated protozoans
The Flagellated Protozoans
  • Characterized by the possession of a definite body shape and the possession of one or more flagella
  • Most species are free-living and mobile

Noctiluca

Kingdom Protozoa

phytoflagellated protozoans
Phytoflagellated Protozoans
  • Have chlorophyll and obtain energy directly from the sunlight
  • Some are strictly autotrophic or heterotrophic
    • Some are a combination of both
  • Both the Euglena and the dinoflagellates are examples of phytoflagellated protozoans

Kingdom Protozoa

dinoflagellates
Dinoflagellates
  • Know for bioluminescence and highly toxic red tides
    • Dense aggregations produce saxitoxin killing fish and crustaceans
  • Also contaminates shellfish causing diarrheic shellfish poisoning
  • Some benthic dinoflagellates produce a neurotoxin that accumulates in tropical fish called Ciguatera

Kingdom Protozoa

phytoflagellated protozoans23
Phytoflagellated Protozoans

Euglena

Chlamydomonas

Noctiluca

Ceratium

Kingdom Protozoa

zooflagellated protozoans
Zooflagellated Protozoans
  • Free-living forms
    • Most individuals are sessile and have a single flagellum that beats to obtain food and nutrients
  • Parasitic forms
    • 25% of zooflagellate spp. are parasitic in humans, invertebrates, and other vertebrates
    • Usually have complex lifecycles with intermediate hosts
    • Malaria is caused by the genus Plasmodium technically a member of the phylum Sporozoa

Kingdom Protozoa

zooflagellated protozoans25
Zooflagellated Protozoans

Choanoflagellates

Kingdom Protozoa