BIOL 110 Study Guide - Midterm Guide: Pollen Tube, Vascular Tissue, Heterozygote Advantage
Document Summary
Features of plants: chloroplasts, photoautotrophs chlorophyll b, store carbohydrates as starch, cell wall made of cellulose, sexual life cycle - alternation of generations, gametes, zygotes and embryos protected in parent tissues (gametangia) Evolution of land plants: gametangia, waxy cuticle, vascular tissue. Contributes to increase in size: pollen, seeds, flowers and fruits. Increase fertilization using other species as pollen carriers. Major groups of plants: non-vascular plants, vascular plants, vascular seedless, flowering plants. Non-vascular plants: bryophytes : not a monophyletic group, small size (low growing, live in moist habitats, no vascular tissue so no true leaves/roots. Nutrients difuse into cells: life cycle. Tutorial 23: plants ii, vascular seedless plants and. Gynmosperms: vascular tissue reduces the problem of desiccation and allows for larger growth, require water for reproduction (lagellated sperm, not a monophyletic group. Seedless vascular: seedless vascular plants sporophyte and gametophyte live independently, homosporous spores produce one type of gametophyte (gametophyte produces sperm and eggs) i. e. ferns, club mosses, horsetails.
