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EUKARYA BACTERIA ARCHAEA Protists Plants Fungi Animals Protists more distinct from each other than plants, animals, and fungi are
Protists Mainly single celled eukaryotes (some are colonial, others multicellular) species in the genus Volvocales range from unicellular to colonial to multicellular.
Protists Often have a very complicated internal structure
Protists Forms –fungus-like –plant-like –animal-like –probably little to do with their evolutionary history
Fungus-like Protists Water molds and slime molds
Animal-like Protists classified according to how they move: –amoeba-like –ciliated – flagellated
Protists and Human Health and Welfare Many protists are responsible for human diseases, such as malaria.
–Giardia - causes diarrhea – Trypanosoma - causes sleeping sicknes
most single-celled, but some multicellular have chloroplasts include –Diatoms –Dinoflagellates (red tides) –Algae – green, red, brown Plant-like Protists
Figure 28.17x Diatom shell
Figure Diatoms: Diatom diversity (left), Pinnularia (left)
Dinoflagellates Importance: parasites on fish cause “red tides” contain toxins cause mass mortalities of aquatic organisms
Algae Classified as: –green (mostly freshwater) –red (marine) –brown (marine “kelps”)
Green Algae The green algae are the ancestors of plants.
Ulva – “sea lettuce”
Codium © D. Stengel
Brown Algae “kelp”
Why are algae important? Production of Oxygen Production of biomass: -the leading primary producers in oceans and basis for marine and freshwater food chains
Grazing protists Photosynthetic protists Protists and Human Health and Welfare
Also … algae serves as human food –Annual value is about US$6 billion
CALIFORNIA California kelp forests considered most diverse in world
Kelp (Brown Algae) 1000 species, almost all marine most common in cold, temperate seas
Giant Kelps - largest of all algae Kelp Forests –one kelp can grow m in one season –can reach 45 m long –among most productive of all plant communities
Parts of a kelp –Gas-filled pneumatocysts –Rootlike holdfast to attach to substrate –Long hollow stem or stipe –Leaflike blades FUNCTION AND FORM
Kelp forests - Where do they occur? Cold, temperate water
The ecological role of kelp
Dampen wave action Reduce coastal erosion Support populations of fish and invertebrates Habitat for many species
Animals of the kelp forest
Sea urchins graze on kelp
Sea otters control urchin populations by eating them
Now in trouble - not so diverse
Kelp Harvesting Old methods –led to reduction of many small marine creatures including abalone –now restricted
Kelp Harvesting Now Currently >100 tons of kelp are removed off the California coast alone --- down from 170,000
Protists Protists are single celled eukaryotes. A few forms are multi-cellular. Protists often have a very complicated internal structure: a single cell.
Protists Part II Algae: Plant-like Protists. A. Euglenoids 1. Example: Euglena 2. Traits similar to plants: a. cell wall b. Chlorophyll 3. Traits similar.
Kingdom Protista. If you look at a drop of pond water under a microscope, all the "little creatures" you see swimming around are protists. If you look.
Algae – The Plant-like Protists. Plant-like Protists Contain chlorophyll located in chloroplasts. Most make their own food through photosynthesis. Many.
Protists The world of Protists: Animal-like Protists Plant-like Protists Fungus-like Protists.
1 Living organisms are classified into 3 Domains 1.Bacteria 2.Archaea 3.Eukarya 4 Kingdoms in this Domain.
Protists Diversity of Protists Protozoans Slime Molds Algae Ecological Role & Disease.
Ch 19: Diversity of Protists. Kingdom Protista G Eukaryotes that are not animals, plants or fungi. They share some but not all of the features of plants,
KINGDOM PROTISTA “The Junk Drawer” of Classification.
Protists. PROTISTS We have already learned about Bacteria and Viruses Now its time to study Protists MICROBES: 1.Viruses 2.Bacteria 3.Protists 4.?
Bacteria How Discovered? Draw and label. Describe cell structure and how moves. How obtains food and energy? Explain types of bacteria reproduction. List.
Kingdom PROTISTA: What are protists? Domain Eukarya Eukaryotes have a Nucleus and many organelles! Defined by exclusion – Cannot be classified as.
Copyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings PowerPoint ® Lecture Presentations for Biology Eighth Edition Neil Campbell.
Phytoplankton are the plant-like organisms of the sea that carry out photosynthesis and float in the upper areas of the worlds oceans.
Kingdom Protista the very first any organism that is not a plant, animal, fungus, or prokaryote (bacteria) any organism that is not a plant, animal, fungus,
By Tae Sung Huh TSW 8. What is protist? Protists are eukaryotics. kingdom Protista, mostly classified by how they move –Protists –fungus-like –plant-like.
CHAPTER 19 PROTISTA. Protists All Eukaryotes (Domain Eukarya) Most unicellular, some multicellular, some colonial (volvox) Autotroph or heterotroph Some.
Analogy: Kitchen junk drawer Animal-like Plant-like In General Mostly aquatic life Usually unicellular – Eukaryotic Reproduction: – Some asexual, some.
Seaweeds or Macroalgae are the large primary producers of the sea. Though more complex than the unicellular algae, seaweeds still lack the complex structures.
SC.912.L.15.6 Classification. You need to know: 1. The distinguishing characteristics of the domains ( Bacteria, Archae, and Eukarya) and kingdoms of.
Protists Chapter 8, Section 1. What is a Protist? One or many celled eukaryotic organism that lives in moist or wet surroundings. Remember, a eukaryotic.
Kingdom Protista The Catch-all Kingdom Protista The protist kingdom is broken down into three main groups. The protist kingdom is broken down into three.
6 Kingdoms Archaebacteria Eubacteria Protista Fungi Plantae Animalia These four kingdoms are believed to have evolved from the Archaebacteria. Formerly.
Kingdoms and Domains Parade Through the Kingdoms Presentation Dr. Senegar-Mitchell.
PROTISTS The Hodge Podge Kingdom. Protists are Divided into 3 Catagories The animal-like protists The plant-like protists The fungi-like protists.
1. All living things are made of cells A cell is the smallest living unit that can carry out life processes Living things can be 1 celled (unicellular)
Life Science Chapter 27 Diversity of Life on Earth Diversity of Life on Earth.
Classification of organisms Kingdoms: Eubacteria, Archaebacteria, Protist and Fungi.
Protists- The Simplest Eukaryotes AP Biology Spring 2011.
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