Transcript Plant Classification

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