Plants…an Overview!
Importance of Plants:Agriculture Prevention of Soil Erosion
Medicines Mental Health
Clothing & Dyes Climate Control
Fuels Tourism
Decoration & Privacy Hobby
Classifying Plants:
-Aquatic or Terrestrial-Prevention of Water Loss-Spores or Seeds-Vascular or Nonvascular
Nonvascular Plants:-mostly terrestrial-produce spores-need water to reproduce-very small plants
Phyla:Bryophyta…mossesHepatophyta…liverwortsAnthocerophyta…hornworts
Vascular Seedless Plants:-have xylem and phloem-spores-can grow largerthan nonvascular plants
Phyla:Psilophyta…whisk fernsLycophyta…club mossesSphenophyta…horsetailsPteridophyta…ferns
Vascular Seed Plants:-Gymnosperm Angiosperm-have xylem and phloem-seeds (unprotected vs. protected)-nonflowering & flowering-can grow largerthan nonvascular plants
Phyla:Cycadophyta…Cycads (gymnosperm)Ginkgophyta…Gingkoes (gymnosperm)Coniferophyta…Conifers (gymnosperm)Gnetophyta…Cone-bearing, odd (gymnosperm)Anthophyta…Flowering (angiosperm)
Major Plant Structures:1. Roots
-Tap-Fibrous-Adventitious
-Root Hairs
2. Stems-woody-herbaceous
-stolons-tubers-fleshy
3. Leaves-guard cells-stomata
4. Flowers-pollination-fertilization-seeds and fruits