1. Plants Lifecycle

2. Evolutionary Past Cyanobacteria Blue- green algae Photosynthetic
Responsible for the marked increase in Oxygen 2000 million years ago

3. Cyanobacteria Evidence
DNA shows the first green plants evolved from prokaryotes between 2500 and 1000 million years ago.
Same chlorophyll in algae and land plants.
Endosymbiosis

4. Endosymbiosis
a symbiotic relationship between two organisms in which one of the two organisms (the endosymbiont) lives inside the body of the other one (the host).

5. Classification of Plants
Kingdom - Plantae
Division (-phyta)
Class (-opsida)
Subclass (-idae)
Order (-ales)
Family (-aceae)
Genus
Species (Genus + specific epithet)

6. Magnolia grandiflora Plantae--includes all plants
Magnoliophyta--flowering plants
Magnoliopsida--dicots
Magnoliidae--subclass for Magnolia-like plants
Magnoliales--order for Magnolia-like plants
Magnoliaceae--family for Magnolia-like plants
Magnolia--genus that includes all Magnolias
grandiflora--specific epithet

7. Circumscription of Features
A new condition is added at each step to set up a category that is MOST specific.
Example:
Things with wheels = buses, cars, bicycles, skates, airplanes, trains, etc.
And is ground transport = buses, cars, bicycles, trains
And can carry more than one person = buses, cars, trains
And runs on rails = trains

8. Four major lineages Nonvascular – lack xylem & phloem & seeds
Seedless vascular
– have xylem & phloem, lack seeds
Gymnosperms
- have seeds, but not enclosed
Angiosperms
- enclosed seeds

9. Examples Seedless Vascular Nonvascular Dicot Angiosperm Gymnosperm
Monocot

10. Nonvascular lifecycle

11. Seedless vascular lifecycle

12. Gymnosperm lifecycle

13. Angiosperm lifecycle

14. Classes of Angiosperms
Monocotyledonae (Monocots)
Very few are annuals
Lilies, grasses, cattails, palms, yuccas, orchids, irises
Dicotyledonae (Dicots)
More primative, 1/6 are annuals
Almost all kinds of trees and shrubs
Snapdragons, mints, peas, sunflowers

15. Monocot characteristics

16. Dicot characteristics

17. Parts of the flower PISTIL Stigma Style Ovary STAMEN Anther Filament
becomes the fruit
becomes the seed

18. Close up of stigma, style and anthers in a tulip
Reproductive Organs
Close up of stigma, style and anthers in a tulip