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Transcript
Plant Classification Bryophyta • Non-vascular plants – Do not have xylem and phloem (vascular transport tissue for moving water and sugars) – Lack true roots, stems and leaves – Small plants that must live in damp environments – Do not produce flowers or seeds • Reproduce by making microscopic spores – Mosses, hornworts, and liverworts Mosses Liverwort Hornwort Filicinophyta • Ferns • Vascular plants – have vascular tissue (xylem and phloem) to conduct water and sugars • Have true roots, stems and leaves • Do not produce flowers, pollen or seeds • Reproduce by producing spores that grow into tiny plants that produce eggs and sperm • Sperm swim to eggs and fertilize • Ferns usually grow in places with lots of water • Zygote grows into new fern Ferns frond fiddlehead Coniferophyta • Vascular plants that produce seeds on cones • Cone-bearing trees like pine trees • Usually evergreens with needle-like leaves • Produce male and female cones – Male cones produce pollen (contains sperm) – Wind often blows pollen to female cone – Eggs are fertilized in female cone and seeds are formed Conifers Angiospermophyta • Vascular Plants that produce flowers and seeds that are enclosed in a fruit • Predominant form of plant-life today • Produce flowers for sexual reproduction • After eggs are fertilized, flowers wither and seeds are enclosed in a fruit to help with seed dispersal – Two groups: • Monocotyledonae (Monocots) • Dicotyledonae (Dicots) Angiosperms – Flowering Plants
