Presentation on theme: "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."— Presentation transcript:
What is a Protist? One or many celled eukaryotic organism that lives in moist or wet surroundings. Remember, a eukaryotic cell does have membrane bound organelles and nucleus. Belong to the kingdom, Protista.
How do Protists Reproduce? Asexual Reproduction Requires only one parent. For single celled protists: Hereditary material is duplicated. Nucleus and cytoplasm divides. The two resulting cells are genetically identical. For multiple celled protists: Part of the parent organisms breaks off and grows into a new organism through cell division.
How do Protists Reproduce? Sexual Reproduction: Meiosis produces gametes. Gametes fuse to form genetically different offspring.
Classification of Protists Divided into three groups based on whether they share characteristics with plants, animals, or fungi.
Classification of Protists Plantlike Protists Contain chlorophyll. Make their own food through photosynthesis. Have cell walls. Do not have specialized ways to move from place to place. Include: Euglenoids, diatoms, dinoflagellates, green algae, red algae, brown algae.
Classification of Protists Animal-like protists: Have to capture other organisms for food. Do not have cell walls. Have specialized ways to move from place to place. Include: Amoebas, flagellates, ciliates, sporozoans
Classification of Protists Fungus like Protists Absorb food from their surroundings. Some have cell walls, some do not. Have specialized ways to move from place to place. Include: plasmoidial slime molds, cellular slime molds, water molds and downy mildew.