-
Precamerbain Time.
photosynthetic forms start to form.
add oxygen to the atmosphere.
Eukaryotes
examlpe >> Algae -
Period: to
Plant evolution
-
Paleozoic Era
periods:
1. Ordavovician and silurian period
2. Devonian period
3. Carboniferuos and Permain period -
Ordavivian and silurian period
First land plant evolved from aquatic ancesetors.
* Simple
* Grew close to the ground in damp areas -
Devonian Period
Some plants like ferns evovled.
adapted to dry places -
Carboniferous and Permain Period
Giant Ferns and other plants formed vast swampy forests. -
Mesozoic Era
periods>>
Triassic
Cretaceous -
Triassic PEriod
Cone-bearing Plants called Cycads -
Cretaceous Period
Leafy trees
Shrubs
Small Flowing Plants -
Cenozoic Era
-
Tertiary Period
Grass and flowering plants evloved -
Quaternary Period
After Ie age period
water level is high and ther is more algae then any other plants through all the periods.
most l=plants are still there that survived the ice age.
