BIOG 1105-1106 | Cornell Introductory Biology, Individualized Instruction

Unit 4: Demos

Objective 4:

Photophosphorylation slideshow
Photophosphoryaltion movie handout
Photophosphorylation Schematic (diagram used in slideshow)
Electron Transport Chains in Photosynthesis

Objective 5:

Where do all the H+ ions come from?
Photosynthetic Phosphorylation

Objective 6:

ATP Generation by Chemiosmosis

Objective 8:

C₃ v. C₄ Plants

Objective 9:

The Plant Body
Ligustrum slide - available in Study Center, click here to test yourself
What does a Ligustrum leaf look like anyway?
Zea microscope slide - available in Study Center, click here to test yourself
Kranz anatomy
Dicot v. monocot leaves
Poa slide - available in Study Center
Leaves: Minimizing Water Loss
Gas exchange in plants

Objective 10:

Functions and types of roots
Leaf demo - available in Study Center

Objective 11:

Primary growth of a root (11c)

Objective 12:

How old is that twig?
Lenticels
Twig Self Test
An example: Horse Chestnut Morphology

Objective 13:

Vascular cambium and rays (13a,b)
Xylem and phloem in trees
Tree growth rings (13c), more optional info
Cork (13c)

Optional Supplementary Material:

The Chemistry of Autumn Colors
Plant tissue slideshow

Leaf Venation

A leaf usually consists of a blade and petiole. Veins run from the petiole to the blade. The main veins may branch in succession off the midvein (pinnate venation); or they may all branch from the base of the blade (palmate venation); or they may be parallel. The blade may be simple, or compound - that is, divided into leaflets that may be pinnately or palmately arranged. Leaves with parallel venation are characteristic of monocots, while dicots tend to exhibit pinnate or palmate venation.