20.2 Classification of Plants KEY CONCEPT Plants can

20.2 Classification of Plants KEY CONCEPT Plants can

20.2 Classification of Plants KEY CONCEPT Plants can be classified into nine phyla. 20.2 Classification of Plants Mosses and their relatives are seedless nonvascular plants. Nonvascular plants grow close to the ground to

absorb water and nutrients. Seedless plants rely on freestanding water for reproduction. Liverworts belong to phylum Hepatophyta. often grow on wet rocks or in greenhouses can be thallose or leafy

20.2 Classification of Plants Hornworts belong to phylum Anthocerophyta. found in tropical forests and along streams flat, lobed body with little green horns 20.2 Classification of Plants Mosses belong to phylum Bryophyta.

most common seedless nonvascular plants sphagnum moss commonly used by humans as peat 20.2 Classification of Plants Club mosses and ferns are seedless vascular plants. A vascular system allows club mosses and ferns to grow higher off the ground. Both need free-standing water for reproduction. Club mosses belong to phylum Lycophyta.

not true mosses oldest living group of vascular plants 20.2 Classification of Plants Ferns and their relatives belong to phylum Pterophyta. frond

fiddlehead whisk ferns and horsetails are close relatives of ferns ferns have large leaves called fronds 20.2 Classification of Plants Seed plants include cone-bearing plants and flowering plants. Seed plants have several advantages over their seedless

ancestors. can reproduce without free-standing water, via pollination pollination occurs when pollen meets female plant parts seeds nourish and

protect plant embryo seeds allow plants to disperse to new places 20.2 Classification of Plants Gymnosperms do not have seeds enclosed in fruit. most gymnosperms are cone-bearing and evergreen. the cone is reproductive structure of most gymnosperms.

pollen is produced in male cones. eggs are produced in female cones. seeds develop on scales of female cones. 20.2 Classification of Plants

Cycads are gymnosperms in phylum Cycadophyta. look like palm trees with large cones grow in tropical areas 20.2 Classification of Plants Ginkgos are gymnosperms in phylum Ginkgophyta. only one species alive today, Ginkgo biloba grown in gardens and used in urban landscaping

20.2 Classification of Plants Conifers are gymnosperms in phylum Coniferophyta. most common gymnosperms alive today includes pines, spruce, cedar, fir, and juniper 20.2 Classification of Plants

Angiosperms have seeds enclosed in some type of fruit. A flower is the reproductive structure of angiosperms. A fruit is a mature ovary of a flower. Angiosperms, or flowering plants, belong in phylum Anthophyta.

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