plants Flashcards
1
Q
- Bryophytes (Paleozoic 500 million yrs ago)
A
first land plants
CHARACTERISTICS: non-vascular/have no vascular system: lack true roots, stems, leaves-> absorbed water and nutrients from their surfaces : mosses
reproduce: spores
2
Q
- Pteridophytes(ferns) (mid paleozoic era 440 million yrs ago)
A
first plant fully adapted to land
CHARACTERISTICS: roots, simple vascular (transporting) tissues
reproduce: spores
3
Q
Seed plants-Spermatophytes: GYMNOSPERMS
A
300 million yrs ago
vascular: reproduce via seeds but no flowers-> exposed seed and evergreen : e.g pines
4
Q
Spermatophytes:
ANGIOSPERMS
A
vascular:flowering plant: seed within fruit : better protection and dispersal-sexual reproduction