Non-Vascular & Vascular-Seedless Plants Flashcards
Invasion of land by plants
475 mya
Vascular System
425 mya
Seeds
360 mya
Non-Vascular Plants
gametophyte dominant
Phylum Bryophyta (moss) and Phylum Hepatophyta (liverworts)
Reproduction
sperm swims to egg through water
Size
small since no vascular system, can’t harvest water from soil
Vascular-Seedless Plants
sporophyte dominant, still uses water for reproduction
Phylum Monilophyta (ferns, horsetails) and Phylum Lycophyta (heterosporous)
Xylem
water and nutrients, “up”
Phloem
sugars, “down”
True Roots
anchors and harvest water and nutrients
Microphylls
singular vein vascular tissue, small leaves
Megaphylls
branching vascular tissue, large leaves with multiple veins
Sporophylls
specialized leaf that holds a sporangium
Strobillus
cluster
Ex: pine cones
Homosporous
single-spore type -> gametophyte
Antheridia
sperm
Archegonia
egg
Heterosporous
microspore -> male gametophyte -> sperm
megaspore -> female gametophyte -> egg