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An in-depth review of various plant types, including mosses and liverworts (bryophyta), ferns and related plants (pterophyta), gymnosperms, and angiosperms. Learn about their classification, characteristics, dominant generations, parts, sex organs, and alternation of generations. Additionally, explore the functions and structures of roots, stems, and leaves.
Typology: Lab Reports
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MOSSES and LIVERWORTS -classification of mosses and liverworts into the division Bryophyta -characteristics of the division (non-vascular, so they don't have true roots, stems, or leaves; require water for reproduction - have swimming sperm) -dominant generation of their life cycle/alternation of generations (gametophyte generation) -parts of a moss (rhizoids, gametophyte portion, sporophyte portion, stalk, capsule, sporangium, spores) -difference between a male and a female moss -alternation of generations (gametophyte generation is the haploid, sexual generation that produces male and female gametes; sporophyte generation is the diploid, asexual generation that produces spores) -sex organs of mosses (antheridia are the male organs - contain sperm; archegonia are the female organs - contain eggs) - found on the tip of the gametophyte portion of the moss -immature gametophyte is called a protonema
FERNS and RELATED PLANTS -classification of ferns into the division Pterophyta -characteristics of the division (vascular, so they do have true roots, stems, and leaves; require water for reproduction - have swimming sperm) -dominant generation of their life cycle/alternation of generations (sporophyte generation) -parts of a fern (frond, sori, sporangium, spores, rhizome, fiddlehead) -alternation of generations in ferns -sex organs of ferns (antheridia are the male organs - contain sperm; archegonia are the female organs - contain eggs) - both kinds of sex organs are found on the prothallus (the gametophyte of a fern) - the antheridia are near the bottom, and the archegonia are near the top
-characteristics of gymnosperms ("naked seed plants" because they produce seeds that are not enclosed within a fruit; vascular, so they have true roots, stems, leaves, and vascular tissues to transport materials) -divisions of gymnosperms (Coniferophyta includes conifers like pines, Ginkgophyta includes the Ginkgo) -dominant generation of their life cycle/alternation of generations (sporophyte generation) -parts of a pine (ovulate cone, staminate cone, leaves/needles, woody stem, microsporophyll, microspores, megasporophyll, megaspores, pollen grains, seeds with wings) -life cycle of pines
ANGIOSPERMS -characteristics of angiosperms (produce seeds enclosed in fruits, vascular) -classification of angiosperms into monocots and dicots - differences between the two -parts of a flower (pistil, stigma, style, ovary, ovule, stamen, anther, filament, pollen, petal, sepal, calyx, corolla, receptacle) -male sex organ of a flower is the stamen; female sex organ of a flower is the pistil -function of a flower is for reproduction -dominant generation of life cycle/alternation of generations (sporophyte generation) -ovary of a flower eventually becomes the fruit; ovule of a flower eventually becomes the seed -major types of fruits: pome, drupe, berry, nut, grain, legume, and samara -pollination is the transfer of pollen from the stamen (anther) of a flower to the pistil (stigma) - flowers can be pollinated by wind, water, insects, and other animals - self-pollination occurs within one flower - cross-pollination occurs between different flowers of a species -fertilization is the union of the sperm and egg to become a zygote