Links
American Society of Plant Biologists

Botanical Society of America

This site has it all! As you make "connections" between boldface terms and images in the lab manual for some outstanding images that are well labelled. 
Plant Structure I 
Plant Structure II.

You need to know about lenticels (unfortunately it's not in Mader's textbook/lab manual).
Lenticels are spongy areas on the stem and roots that allow interchange of gases between internal tissues and the atmosphere. Here's an image of a lenticel. 

And from Hawaii... great shots and descriptions of Ground Tissue. Make sure you gaze upon the image of the Casparian Strip.  
 
Images:
Great image of a vascular bundle. 
40x image of the lower epidermis of a leaf with stomata (they're in pink).

Transport in Angiosperms: Transpiration

What does TACT stand for?
Define each term

Those little openings he's talking about are called stomata.. Know them!

I like this whole lecture... I'm holding you responsible for it :-)

The Role of Xylem Tissue and Stomata

What are the "pits" in xylem cells for?

Know your stomatal anatomy! What do guard cells do?

Plant Transport: Absorption and Lateral Transport in Roots

Know the following:

• plasmodesmata
• root hairs
• mycorrhiza

See how root hairs and mycorrhiza increase surface area?

Follow the flow of water through and around cortex cells and then ALL of the water goes THROUGH the endodermal cells.

Phloem: The Movement of Sap

What's phloem?

Is it alive or dead?

What is moving through phloem?

What's bulk flow?

What's translocation?

Be able to identify the "source" and "sink" when sugar is being transported in a plant.