Transcript Bryophytes
Bryophytes Making the transition from water to land Adapting to life on land… • • • • Some structures to prevent water loss Thin bodies absorb water Short bodies (transport water cell to cell) Leaf and root like structures Algae and Plants share… • • • • Chloroplast & get energy from the sun Cell-wall material (cellulose) Energy storage molecule (starch) Eukaryotic & multi-cellular Besides those traits, all plants… • Have alternation of generations – Haploid fuse sex cells to become diploid – Diploid undergo meiosis to become haploid • Haploid and diploid generations have very different shapes Bryophyte: Pseudo Roots (Liverwort) Bryophyte: Pseudo Roots Bryophyte: Pseudo Roots Bryophyte: Pseudo Leaves Bryophyte: Pseudo Leaves Bryophyte: Stomata (pores) Bryophyte: Cuticles Bryophyte Anatomy Gametophyte (main plant body, “leaves”), haploid Rhizoids, haploid Bryophyte Anatomy Gametophyte makes gametes (sperm and eggs), haploid Sperm have tails to swim in the moisture on the plant to another nearby plant in order to fertilize the egg. Bryophyte Anatomy Sperm Sperm being released Eggs for sperm to fertilize Bryophyte Anatomy Fertilized eggs (diploid) grow into a sporophyte The sporophyte (diploid) grows up from the top of the gametophyte (haploid) Bryophyte Anatomy The sporophyte (diploid) is made up of a stalk and capsule… The sporophyte (diploid) goes through meiosis and released spores (haploid) from the capsule. Bryophyte Anatomy The spore (haploid) grows into a gametophyte (haploid) Bryophyte Anatomy Capsule Sporophyte (Diploid) Gametophyte (Haploid) Stalk (Seta) Gametophyte (body with “leaves”) Rhizoid Bryophyte Life Cycle Bryophyte: Moss Species Bryophyte: Moss Species Bryophyte: Moss Species Bryophyte: Moss Species Bryophyte: Liverwort Species Bryophyte: Liverwort Species Bryophyte: Liverwort Species Bryophyte: Hornwort Species Bryophyte: Hornwort Species Bryophyte: Hornwort Species Bryophyte: Native Species (Dead! No winter rains!) Bryophyte: Native Species (Dead and not quite dead!) Bryophyte: Native Species (Still alive!) Bryophyte: Native Species (After pouring water on it…) Blurry footage of moss reviving: Part 1 Blurry footage of moss reviving: Part 2 I’m so happy it’s alive! Mushroom growing with liverworts and mosses. Super cute!