This document discusses the diversity of plant life and classifications. It outlines the four major groups of plants: Bryophytes, Pterophytes, Gymnosperms, and Angiosperms. Bryophytes are non-vascular and include mosses. Pterophytes are vascular and include ferns. Gymnosperms are also vascular but reproduce without water and include conifers and cycads. Angiosperms are flowering plants that bear fruits containing enclosed seeds, including both monocots and dicots. The document provides examples and characteristics of each group.

1. BIODIVERSITY OF LIVING
ORGANISMS
PLANT DIVERSITY
PRESENTED BY:AMELIA JAMBANE

2. PLANT CLASSIFICATION
PHYLOGENETIC TREE- It is a
tree like diagram that shows evolutionary
relationship between species based on
similarities and differences .

3. PHYLOGENETIC TREE
PHYLOGENETIC TREE

4. FOUR MAJOR GROUPS
OF PLANTS

5. Bryophtes
Example : Moss tree
 Non-vascular- do not contain vascular tissues xylem and phloem
 No true roots, leaves or stem
 Need water to reproduce
 Dominant gametophyte generation

6. LIFE CYCLE OF A MOSS
PLANT

7. PTEROPHYTES
Example: Fern plant
• Vascular plant-contains vascular tissues such as xylem and phloem.
• Has true roots, leaves and stem
• Rely on water for reproduction
• Dominant sporophyte generation

8. LIFE CYCLE OF A FERN
PLANT

9. GYMNOSPERMS
Example: Conifers , cycads
Vascular plant
Have true roots , leaves and stem
Do not need water to reproduce
Produce pollen grain and naked seeds

10. ANGIOSPERMS
Example: sunflower, apple etc.
• Angiosperms includes all flowering plants bearing fruits with enclosed
seeds
• flowers can be : monocotyledon or dicotyledonous.

11. FRUITS
• Fertilization takes place within the ovule
• Ovary matures and contains seeds
• The ovary wall protects the seeds

12. FLOWERS
Consist of modified leaves arranged in four whorls
• carlyx
• corolla
• stamen
• carpels
Carlyx and corolla are reffered to as perianth

13. Structure of a flower

14. ANY QUESTIONS???
THANK YOU . THAT’S
ALL

15. REFERENCES
Campbell,N.A.,&Reece,J.B.(2008). Biology.8th ed.san Francisco:Pearson Education,Inc
Goklani,D.(2019).Diversity in living organisms. Available from slideshare at
https://www.slideshare.net/MeetaMasand/diversity-in-living-organisms-146926694
(accessed 12 August 2021)
Jewett,J.(2010).Plant diversity Jewett. Available from slideshare at
https://www.slideshare.net/MrJewett/plant-diversity-jewett
(accessed 12 August 2021 )
Ferguson,S.(2012).Plant diversity and reproduction. Availablefrom slideshare at
https://www.slideshare.net/Sianfergs/plant-diversity-and-reproduction
(Accessed 12 August 2021)
Smp1470.(2015). Plant diversity collection available from sllideshare at
https://www.slideshare.net/smp1470/plant-diversity-collection
(Accessed august 2021)
Prasad ,M.(2021). Evolution of plant sexual diversity. Available from slideshare at
https://www.slideshare.net/MaruthiPrasad32/evoluton-of-plant-sexual-diversity
(accessed August 2021)