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Introduction to Plants

Science, Grade 6

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Seedless Nonvascular Plants Plants are placed in two major groups – nonvascular plants and vascular plants. Nonvascular plants lack roots and a system of tubes for transporting water and nutrients. They absorb water and nutrients directly from their environment. Vascular plants have a well-developed system of tubes for transporting materials throughout the plant’s body. Liverworts, mosses and hornworts grow in moist areas where they can absorb water and nutrients directly from their surroundings. Seed Plants Seed plants are vascular and use pollen and seeds to reproduce. There are two main groups of seed plants – gymnosperms and angiosperms. Angiosperms An angiosperm is a ﬂ owering plant that produces seeds enclosed in fruit. There are two major groups of angiosperms– monocots and dicots. Types of Angiosperms Ferns, club mosses and horsetails have vascular tissue and reproduce by releasing spores. Plants without Seeds Seedless Vascular Plants moss on a tree liverworts hornworts club mosses ferns horsetail Seed Structure Types of Gymnosperms A gymnosperm plant produces naked seeds which are not covered by a protective fruit. Cycads - palm tree Ginkgoes - Ginkgo biloba leaves corn Gymnosperms lily rice bean plant apple tree dandelions Seed Leaf Stem Flower Plant part Monocots Dicots One cotyledon Parallel veins Bundles of scattered vascular tissue Flower in three parts Two cotyledons Branching veins Bundles of vascular tissue arranged in a ring Flower in four or five parts Comparing Monocots & Dicots corn bean pine seed coat embryo embryo seed coat seed coat stored food embryo stored food Gnetophyte - Welwitschia stored food Photos courtesy of USDA, NOAA & USFWS. Conifers - pine tree Introduction to Plants © C opyright NewPath Learning. All Rights Reserved. 94-4604 www.newpathlearning.com

\|xiBAHBDy01750pzY Seedless Nonvascular Plants ________________, ________________ and ________________ grow in moist areas where they can absorb water and nutrients directly from their surroundings. Seed Plants The two main groups of seed plants are ___________________ and ___________________. Angiosperms An ___________________ is a ﬂ owering plant that produces seeds enclosed in fruit. There are two major groups of angiosperms – ___________________ and ___________________. Types of Angiosperms ________________, ________________ and ________________ have vascular tissue and reproduce by releasing spores. Plants without Seeds Seedless Vascular Plants A ___________________ plant produces naked seeds which are not covered by a protective fruit. Cycads - palm tree Ginkgoes - Ginkgo biloba leaves Gymnosperms Monocots s t o c i D t r a p t n a l P Seed Leaf Stem Flower _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ _______________ Comparing Monocots & Dicots Gnetophyte - Welwitschia Conifers - pine tree Introduction to Plants © C opyright NewPath Learning. All Rights Reserved. 94-4604 www.newpathlearning.com Key Vocabulary Terms • angiosperms • monocot • dicot • nonvascular • embryo • roots • ﬂ ower • seed coat • fruit • spores • gymnosperms • stem • leaf • vascular Describe the following: Nonvascular plants __________________________________________________ __________________________________________________ Vascular plants __________________________________________________ __________________________________________________ Seed Structure stored food stored food stored food Types of Gymnosperms

Introduction to Plants

Science, Grade 6

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