Plant Groups

• Plants are multicellular eukaryotes with cellulose rich cell walls, chloroplast containing chlorophyll a and b and carotenoids and starch as their primary food reserves
• Features that have let plants colonize many type of environment are the presence of stomata and waxy cuticle.
• NON-VASCULAR PLANTS - Small compact green plants - With chlorophyll a and b, starch, cellulose cell walls and motile sperm cells - No true vascular system – water is absorbed by capillary action - Lifecycle with dominant gametophyte generation.
• Bryophytes - reproduce by way of spores - no true roots and leaves; extremely dependent in water for reproduction and survival. - In bryophytes, gamete develops within gametangia
• • Male gametangium: antheridium – produce flagellated sperm • Female gametangium: archegonium – produces egg • Egg is fertilized within archegonium, zygote develops in the protective tissue of the archegonium
• Gametophyte (haploid) – plant body containing gametangia (sexual generation) Sporophyte (diploid) – plant body containing sporangia.
• Division Bryophyta - Mosses
• Division Hepatophyta - Liverworts
• Division Anthocerophyta - Hornworts