Review of Representative Plant Groups

Hawaiian Fern

A. Bryophytes

1. Three Phyla

Liverworts

Hornworts

Mosses

2. Life Cycle

Moss

3. Ecological and Economic Benefits

-ability to withstand drying cycles: Tortula ruralis

-peat bogs, Sphagnum

B. Pteridopytes (Seedless Vascular Plants)

1. Representative Groups

Lycophyta (Club Mosses)

Pterophyta (Whisk Ferns)

Pterophyta (Horsetails)

Pterophyta (Ferns)

2. Life Cycle

Fern

3. Ecological and Economic Benefits

- Carboniferous age the coal age

-the scouring rush

-wreath

C. Seed Plants (Vascular)

1. Introduction

What are the derived characters shared by all seed plants?

a) reduction in size of gamete

b) advent of seed

c) evolution of pollen:

pollination

-insect

-wind

-bat

-giraffe

types of pollen (winged, "sticky")

2. Two Major Groups of Seed Plants

a. Gymnosperms

Extant groups

Ginkgo fruit

Cycads

Gnetophyta: Welwitschia, Ephedra

Conifers: Pine, juniper, cypress

Life Cycle of Pine

b. Angiosperms (Flowering Plants)

Traditional Grouping

Monocots

Dicots

What is the main function of a flower?

What are the parts of a flower?

Angiosperm Life Cycle

Ecological and Economic Benefits

-Economic Botany

-agriculture and angiosperms

-medicine

Mimosa in flower