Thursday, July 22, 2010

Sam Sprouse part one

This image of a tree can represent a niche. The term niche is used to describe how an organism reacts and interacts with its enviorment. This tree for example allows animals to nest in it, and the tree also can provide food for other animals.









These flowers contain a flower ovary. The flower ovary is the female reproductive organ of flowers. The flower ovary is the part of the pistil located near the base of the petals.










This tree bark holds two different kinds of transport tisses. Xylem being located in the roots of the tree help transport water lost during photosyntesis and transpiration to other parts of the tree. The other transport tissue is the phleom which is found in the intermost part of the bark and the main function of the phleom is transport the organic materials made during photosyntesis other parts of the tree. The wood also contains lignin which is a chemical compound found within plant cells. Lignin is used as a sort of barrier between the cell wall. It is found between the cellulose, hemicellulose, and pectin. Lignin also also has a function where it helps stregthen the xylem

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