Plant evolutionPlant evolution

Plant ClassificationPlant ClassificationBased on:Based on:

1.1. Vascular systemVascular system Tubes that carry water & nutrients Tubes that carry water & nutrients

throughout plantsthroughout plants

2.2. Reproductive structuresReproductive structures

I.I. SporesSpores – single cell – single cell

II.II. SeedsSeeds – have many cells & food for the – have many cells & food for the embryo plantembryo plant

a.a. GymnospermsGymnosperms – put seed in cones – put seed in cones

b.b. AngiospermsAngiosperms – put seed in flower – put seed in flower ovaryovary

Plant Classification FlowchartPlant Classification Flowchart

Bryophyte life cycleBryophyte life cycle The gametophyte is the dominant The gametophyte is the dominant

generationgeneration

Diversity of bryophytesDiversity of bryophytes

MOSSES

LIVERWORTS

HORNWORTS

Bryophyte DrawingsBryophyte Drawings

Draw the two different bryophytes Draw the two different bryophytes (mosses and liverworts)(mosses and liverworts)

Label the different structures (look at Label the different structures (look at pictures in book, p. 425)pictures in book, p. 425)

Write a short paragraph explaining the Write a short paragraph explaining the differences between mosses and differences between mosses and liverworts liverworts

The sporophyte is the dominant The sporophyte is the dominant generation in the pteridophytes’ life cyclegeneration in the pteridophytes’ life cycle

Ferns Ferns HorsetailsHorsetails Club Club mossesmosses

SWORD

BRACKEN

LADY

LICORICE

FERNS

http://www.dolphinplace.com/ferns.htm

Pteridophyte DrawingsPteridophyte Drawings

Draw the four different ferns and the Draw the four different ferns and the horsetailhorsetail

Label the different structures (look at Label the different structures (look at pictures in book, p. 428, and slides)pictures in book, p. 428, and slides)

Write a short paragraph explaining some Write a short paragraph explaining some differences between two of the ferns you differences between two of the ferns you drew drew

In gymnosperms the sporophyte In gymnosperms the sporophyte generation is dominantgeneration is dominant

Gymnosperm diversityGymnosperm diversity

Ginkgo

Cycads

Gnetophytes

Conifers