1. Biology 11
Plantae Review

2. Objectives
REVIEW REVIEW REVIEW!!

3. Typical Bryophyta Life Cycle

4. Typical Pteridophyta Life Cycle

5. Typical Gymnosperm Life Cycle

6. Typcial Angiosperm Life Cycle
Polar
nuclei
Pollen grains
male gametophyte in pollen (haploid)
Egg
cell
fertilization
female gametophyte in ovary (haploid)
sporophyte in seed (diploid)

7. Sporophyte most dominant

8. First land plants Bryophytes: mosses & liverworts non-vascular
no water transport system
no true roots
swimming sperm
flagellated sperm
lifecycle dominated by haploid gametophyte stage
fuzzy moss plant you are familiar with is haploid
spores for reproduction
haploid cells which sprout to form gametophyte
haploid
diploid
Where must mosses live?

9. First vascular plants Pteridophytes: the ferns vascular swimming sperm
diploid
Pteridophytes: the ferns
vascular
water transport system
xylem, phloem, roots, leaves
swimming sperm
flagellated sperm
life cycle dominated by sporophyte stage
leafy fern plant you are familiar with is diploid
fragile gametophyte
spores for reproduction
haploid cells which sprout to form gametophyte
haploid
Where must ferns live?

10. Seeded Vascular Plants
Gymnosperm: conifers
vascular
heterospory
male vs. female gametophytes
seeds
naked seeds (no fruit)
pollen
contain male gametophyte
life cycle dominated by sporophyte stage
coniferous trees you are familiar with are diploid
reduced (microscopic) gametophyte
reduction of gametophyte protects delicate egg & embryo in protective sporophyte
protected from drought & UV radiation

11. Angiosperm Body Plan Overview

12. Body Plan The Angiosperms have four principle organ systems:
1. Leaves:
2. Stems:
3. Roots:
4. Flowers:

13. Flower Function to attract a pollinator
Modified shoot with 4 rings of modified leaves
sepals
petals
stamens
male
carpel
female
Anther
Filament
Stamen
Stigma
Style
Ovary
Carpel
Sepal
Petal
Ovule
sepals
petals
stamens
carpel