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Protist Reproduction Methods

Learn about the reproduction methods in protists, comparing asexual and sexual processes. Explore the characteristics of Protista, including eukaryotic nature and the three main groups. Discover how mitosis and meiosis play roles in asexual and sexual reproduction in protists.

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Protist Reproduction Methods

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  1. Reproduction in Protists

  2. GPS and EQ • GPS.07.SC.C.S7L3.b. - Compare and contrast that organisms reproduce asexually and sexually (bacteria, protists, fungi, plants & animals). • E.Q.: How do protists reproduce?

  3. Characteristics of Protista • Eukaryotic (have a nucleus) • Usually Single Celled • Live in moist environments • Reproduce asexually or sexually

  4. Three Groups of Protists • Plant-like: Algae • Fungus-Like: Water Molds, Slime Molds • Animal-Like: Protozoa

  5. Asexual Asexual reproduction occurs by mitosis. Sexual Sexual Sexual reproduction involves the exchange of genetic material across a cytoplasmic bridge. Sexual reproduction involves the exchange of genetic material across a cytoplasmic bridge. Protist Reproduction

  6. Mitosis: Asexual Reproduction

  7. Sexual Conjugation • Protists can also transfer DNA BETWEEN 2 protist cells (called conjugation). • Protists can also transfer DNA BETWEEN 2 protist cells (called conjugation).

  8. What happens in meiosis? Meiosis: Sexual Reproduction • The events in meiosis are smooth and continuous: • Chromosomes double and thicken. • Nuclear membrane disappears. • Homologous chromosomes line up a the cell’s center. • Spindle fibers attach. • The nuclear membrane reforms. • Two cells form that are identical and diploid.

  9. What happens in meiosis? • In the second division, the chromosomes do not double. • Chromosomes thicken and line up at cell’s center. • Spindle fibers attach. • Chromosomes are pulled to opposite side of cell by spindle fibers. • Four new cells form when the nuclear membranes reform and cells separate. • The four new cells are unique and haploid so they have half the number of chromosomes compared to starting cells.

  10. Summary: Compare and Contrast Reproduction in Bacteria and Protists

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