docSeed Plant Characteristics
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Seed Plant Characteristics
Seed Plant Characteristics Seed Plants Gymnosperms Conifers Cycads Gnetophytes Ginkgo Angiosperms Dicots Monocots Seed Plant Characteristics - Ovules Seed Plant Characteristics - Seed Integument Megaspore Mother Cell Ovule & seed Heterospory Gametophytes endosporic Pollen & pollen tube Secondary growth Gymnosperm Seed Structure Embryo Nucellus = Megasporangium Megagametophyte Seed Coat Seed Plant Characteristics - Heterospory Microspores Seed Plant Characteristics – Endosporic Development Megaspore Male gametophytes form inside pollen grain wall megaspore Female gametophytes form inside megaspore wall Meiosis Ovule 2n Megaspore Mother Cell Haploid Microspores Integument megaspore Nucellus Megagametphyte Pollen Integument 1 Seed Plant Characteristics – Pollen Tube Seed Plant Characteristics: Secondary Growth Pollen tubes form from pollen grains Pollen Grain Groups of Living Plants Gymnosperm Characteristics Mosses Liverworts Hornworts 9 Naked Seeds Nonvascular Plants 9 Reduced male gametophyte 9 Multicellular Female Gametophyte Many archegonia 9 Embryo nutrition from female gametophyte 9 Xylem entirely of tracheids Vascular Plants Gymnosperms Club mosses Whisk ferns Horsetails Ferns Conifers Cycads Gnetophytes Ginkgo Seedbearing Vascular Plants Angiosperms Gymnosperm Characteristics Gymnosperms Seedless Vascular Plants Flowering Plants Gymnosperm Evolution Angiosperms Ovary Seed Ovuliferous Scale 2 Gymnosperms 9Cycadophyta 100 species 9Gnetophyta 70 species 9Gingkophyta 1 species 9Coniferophyta 500 species Phylum: Cycadophyta Phylum: Gnetophyta Genus: Ephedra Phylum: Gnetophyta Genus: Welwitchia Phylum Coniferophyta Phylum: Ginkgophyta Genus: Ginkgo Most common Gymnosperms Redwoods and Giant Sequoia Trees height of a 3030-story building: Sequoiadendron giganteum Tallest Living Redwood, Sequoia sempervirens Woody Plants, and most have Needle or ScaleScale-like Leaves Wood, Paper, Turpentine, Resin, Ornamental Plants, and Christmas Trees. 3 Pinus Life cycle Male cones Female cones END Gymnosperms 4
