BIO120H1 Lecture Notes - Lecture 17: Wet Season, Acer Saccharum, Pinus Resinosa
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BIO120H1 Full Course Notes
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Green stems > photosynthetic bark on trunk and branches. Can grow without incurring heat load and water loss through leaves. Air ow around the leaf > equilibrates with air temperature. Will not heat up as a result of the sun. Slow-growing plants as a result of low rate of photosynthesis. Grows to 15m, 200 + years, 5+ tonnes. Can absorb 800l of water from one storm. David grundman > killed while attempting to vandalize a saguaro. Episodic patterns of water availability in sonoran desert: Plants have to harvest water when its available (like the saguaro) Dropping leaves during dry or cold seasons can reduce water stress and tissue damage. Rosemary > makes ower and keeps it leaves year-round; evergreen angiosperm. Leaf shape in uences gas change through ow of uids over surfaces: Layer of uid that forms close to surface of object. More exchange between object and uid ideally, a plant would require more turbulent for cooling leaves (sun leaves)
