Summary Plant Diversity Grade 11 Notes

Plant Diversity




Plant
Diversity




Plant diversity Page 1

,Basics

DID YOU KNOW?

Four main groups: It is thought that all modern plants
originated from algae
• Bryophytes -----------------------------------------------------------
• Pteridophytes
• Gymnosperms
• Angiosperms



Plants are divided
into these groups
according to: Note

When talking about plant diversity
1. The presence/absence of
we deal with the Kingdom Plantae.
• Vascular tissue
• True leaves, stems and
roots
• Spores or seeds
• Fruits
2. Their dependency on water




All plants are:
1. Multicellular
2. Eukaryotic – have membrane bound organelles and nucleus
containing their own DNA
3. Have a cellulose cell wall
4. Often contain chlorophyll


Plant diversity Page 2

, Classifying


Classifications of divisions in Kingdom Plantae


Plants

vascular system non-vascular


bryophytes


seedless seed producing
(spermatophytes)
pteridophytes
------------------------------------------------------




cone bearing flower/fruit bearing
(naked seeds) (covered seeds)


gymnosperms Angiosperms


Plant diversity Page 3