BioG 1105-1106 at Cornell University
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Unit 6: Demos

Objetive 3:

Water potential

Objective 4:

Ranunculus microscope slide - available in Study Center
Casparian strip

Objective 5:

Pits (optional)

Objective 6

Is root pressure as a major element causing sap movement? (6a)
Adhesion and capillarity - also see demo in Study Center
Transport in the xylem (6d)
Researchers simulate transpiration in synthetic trees!(optional)

Objective 7:

Gas exchange in plants

Obective 8:

Sieve tube structure and companion cells
Phloem self-quiz
Phloem transport

Objectives 10-13:

Plant hormones
Synthetic auxin = weed killer
Plant defense hormones
Article: Giberellin receptor found!(optional)
Article: New plant hormone discovered! (optional)

Objective 14:

Biological clocks (14c)
Plant growth due to light

Optional Supplementary Material:

Maple syrup
Plant Vampire!
The Chemistry of Autumn Colors
Tree Rings Provide 200 Years of Hurricane Information
Plant image slideshow/Slide descriptions - Optional images to help visualize concepts learned
Plant - More slides to test yourself
Introduction to Plant Tissues - More images and info

Microscopy of a Monocot Root

Some typical attributes of a monocot root are visible in this low magnification (40X) view. The cortical tissues between the epidermis and endodermis are mostly large parenchyma cells as are those of the pith in the innermost part of the root. The
endodermis with its Casparian strip is just outside a circular ring of vascular tissues. The large open red-stained circular cells are vessels of the primary xylem. In this slide the red-stained Casparian strips can be seen between the cells and around certain of the endodermal cells (arrows). Note: To magnify this image, move your mouse to the right and let it rest on the text for each desired magnification.

200x | 400x | 800x | 1000x

© BIOG 1105-1106