Download Nonvascular Plants (bryophytes)

Origin of Plants
• Similarities in certain species suggest a
common ancestor (cell wall, chlorophyll)
Modern green algae
Fern
Nonvascular Plants (bryophytes)
• Does not have specialized tissue to move
water & nutrients
• Small plants, depend on diffusion
hornwort
liverwort
moss
Nonvascular (seedless) Plants
• Don’t have true stems, roots, or leaves
– Do have structures that carry out activities
• Mosses
– “mat” of tiny green plants
– Rhizoid
• root-like structure that holds nonvascular plants in
place
• Helps plant get water and nutrients
Moss Life Cycle
Nonvascular (seedless) Plants
• Liverworts & Hornworts
– Similar to life cycle of mosses
– Liverworts
• Gametophytes are leafy &
moss-like OR broad and flattened
– Hornworts
• Gametophytes are broad
and flattened
Importance of Nonvascular Plants
• First plants to live in new environment
• Decompose to form thin soil layer for other
plants
• Provide soil stability (reduce erosion)
• Food chain
• Material for nesting
• Dried and burned
• Potting soils
Vascular Plants
• Has tissue to deliver water & nutrients around
plant
• Similar to circulatory system in humans
• Plants can be any size
Types of Vascular Plants
• Vascular plants have tissues that move water
& nutrients throughout plant
– Seedless
– Nonflowering Seed Plants
• Gymnosperms
– Seeds not enclosed by ovary or fruit
– Flowering Seed Plants
• Angiosperms
– Seed within fruit of plant
Seedless Vascular Plants
Fern
Horsetail
Club Moss
Seedless Vascular Plants
• Ferns
– Fronds-tightly coiled fern leaves (fiddleheads)
– Rhizome-underground stem from which new
leaves and roots grow
• Horsetails
&
Club Mosses
Life Cycle of Fern
(vascular seedless)
Importance of Seedless Vascular Plants
• Environment
– Help form soil
– Prevent erosion
• Fossil Fuels
– Coal
• Dietary supplements
• Skin Care products
• Shampoo