Plants-Multicellular Eukaryotes that photosynthesize.

-Cell walls made of cellulose

Types of plants—Non vascular

1. Bryophytes—Mosses, liverworts, hornworts.

--Reproduction only in water

--No vascular tissue

--draw water only by osmosisVascular tissue

2. Seedless Vascular plants—ferns and their relatives

--Reproduce using spores

--Have vascular tissue to transport food and water

--Xylem-moves water through the plant--Phloem-moves food through the plant

spores

Xylem and phloem

Microscope break…• At this point, you will use the microscopes

to look at a cross section of a fern leaf, which includes the sorus, which is the spore producing part of a fern leaf.

• You will then look at a fern gametophyte (prothallium).

• Sketch each on low power and we will label when done.

Vascular plants

3. Gymnosperms– conifers, cykads, ginkgoes, gnetophytes

--reproduce by seeds—have no protective coat (naked seed).

.--includes pine, spruce, fir trees

--sperm from pollen fertilizes egg

Gymnosperms continued!

Pinecones (female) contain the seeds.----

Male cones contain the pollen----

Where are the different types of cones located on the tree?

4. Angiosperms—Flowering plants

--Have flowers which attract insects and birds for more efficient pollination.--have ovary—covers seed (fruit)

--animals may carry fruit to new locations—other dispersalmechanisms?

Diversity of Angiosperms

Two classes:

Comparison of monocotsand dicots.

Monocots—corn, lilly, grass, orchids, palms, etc.

Dicots—roses, clover, tomatoes,

daisies, etc.

Dicotyledonae (dicots)Monocotyledonae (monocots)

(Pg. 570)