BIOL 1902 Lecture Notes - Lecture 8: Hyperthermia, Hyoid Bone, Turkey Vulture
15 Aug 2018
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Skunk cabbage: produces heat that melts the snow, exposing buds to sun. Desiccation: water within plants can cause it is freeze, dry out and die. (calm, sunny days are the worst: size. Coniferous retain their needles means some water inside (cid:272)hlorophyll e(cid:374)a(cid:271)les tree to use su(cid:374)"s e(cid:374)ergy to (cid:272)reate heat to stop fro(cid:373) freezi(cid:374)g vs photosy(cid:374)thesis. Leaf surface are is small: close stomata (pore between two guard cells. Opening for gas exchange in skin of plant: thick cuticles. Leather leaf: hairs underneath leaf prevent water loss by break airflow and thus space between the leaf. Rock polypody/evergreen fern: large leaf sa so they curl up to reduce sa. Balsam fir: short branches with long needle - spire shape, spike triangle. In response > curl leaves to reduce sa > close to stoma (cannot shed leaves) Dragonfly: hot liquid shunted to long abdomen with greater sa to lose more heat.
