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(7 Important Characteristics of) Plants
1. Sporic Meiosis 2.Multicellular 3.Dominant Diploid Sporophyte(except Bryophyte) 4.Photosynthetic 5.Heteromorphic Alternation of Generations 6.Cell Walls=Cellulose 7.Store Excess Carbohydrates as Starch
4 Characteristics of Bryophytes
1. Vascular System Not Well Developed 2.Dominant Haploid Generation 3.Need H20 for Sperm Cells to Swim 4.Sporophyte Generation Metabolically Dependent on Gametophyte Generation
Bryophyte Phyla and Descriptions
-produce gametes thru mitosis and differentiation
--multicellular haploid phase
(characteristics and examples?)
-need H20 for sperm to swim
-true leafs and true roots
-well-developed but primitive vasculature
-ex: Club Mosses, ground pines, quillworks
(characteristics, phylum, examples)
-need H20 for sperm to swim
-well-developed vascular system
-no true roots or leaves--> photoseynthetic stem
-gametangia located on underside
-Phyla: Psilotum=psilophytes, Equisetum=horsetails&scouring rushes
-Ex: whisk ferns, scouring rushes, true ferns
-Ex: Ephedra, Welwitzchia, Gnetum
-most closely related to angiosperms b/c of similarities in vascular system and female gametophyte
-most abundant gymnosperms
-Ex: pines, firs, spruces, larch, cypress, jupiter
-nutricionally dependenet on sporophyte generation
Floral organization in which the sepals, petals, and stamens are attached to the receptacle at the base of the ovary, which is superior (that is, free from the calyx).
Floral organization in which the sepals, petals, and stamens apparently grow from the top of the ovary, which is inferior. (that is, completely or partially attached to the calyx).
(2 Developmental Achievements of) Seed Plants
1. free water is no longer necessary for sexual repro to occur
2. the embryonic plant has been provided with some stored food reserves and packaged in a protective coat(seed coat)
-flower=multiples of 3
-vascular bundles in stem scattered
-one embryonic leaf
-flower=multiples of 4 or 5
-vascular bundles arranged in a circle
Plants are said to have evolved from an ancestral ______ _____ -- a member of the Phylum Chlorophyta.
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