Monday, December 1, 2014

"A Complicated Network of Pathways"...

What may appear as an aerial view of salt ponds is actually the detail structure of an oak leaf as it turns from the vibrant fall colors. A leaf is an organ. Some leaf forms can modulate the amount of light they absorb to avoid or mitigate excessive heat and ultraviolet damage. Leaves can also store food and water, and are modified accordingly to meet these functions.

What you see here is the extensively vascularised network of xylem, which supplies water for photosynthesis, and phloem, which exports the sugars produced by photosynthesis.

Photo # KS6_5108.
Location: central Arkansas, 11/2014.
(c) Kelly Shipp Photography.

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