Task to be completed for week 3 : Futher research on chosen theme

Research on Structure of leaf...

The leaf structure is constructed by the veins that running through the leaf. Veins are made of Xylem and Pholem which bring food and water to leaf also dissolve sucrose. Xylem and Pholem are considered to be tubes that run across and all over the leaf.

Structurally, the leaf provides a high surface area to volume ratio. The internal layers of the leaf (from top to bottom) include the cuticle, the upper epidermis, the mesophyll, and the lower epidermis. Veins and bundle sheath cells are located in the mesophyll. Stomates, which regulate the flow of carbon dioxide and oxygen into and out of the leaf, are located in the lower epidermis. 

As we can see, in the section of the srecture. The "air bag" are formed and in each air bag has different funtion and role for the leaf. Giving the idea of "layer" and "story" into the structure.

On the leaf, there are multiple tubes that run accross and overlap each other on the leaf. These tubes carry food and nutrient to each cells on the leaf. Like a food supplier chain, these tube then form a network of vein accross the leaf.

The following video embed from youtube shows leaft structure in 3D model. This is to create an image of how leaf structure look like. It is almost like a building structure where it is consisted of base and also as other fabrication.





Reference : http://mdc.mo.gov/discover-nature/habitats/forests/structure-leafhttp://library.thinkquest.org/28751/review/plants/2.html
http://www.revitcity.com/gallery.php?action=view&gallery_id=9334
http://chestofbooks.com/flora-plants/Botany-Flora-USA-Canada/Structure-Of-Leaves.html
http://www.biotopics.co.uk/plants/leafst.html

Video from : http://www.youtube.com/watch?v=eelswM2YP_k