BIOL 201 Study Guide - Midterm Guide: Palisade Cell, Abscission, Root Cap
30 Oct 2014
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Leaves: function to harvest solar energy and photosynthesize. * butterworts, etc. spines, sticky texture, poisons (modifications) Stems: support, display photosynthetic organs, storage, transport. Abscission zone usually contains more sclerenchyma and there for thin cells. Cells along abscission layer start to seperate. Purpose is to isolate the damaged leaf to protect the rest of the plant from infections. Connects the stomata and has many air spaces where air is stored. The stored air can be used to fix co2 after the stomates have closed. Leaves have meristematic tissue that faces the shoot and thickens the leaves. * after forming upper and lower leaf zones, marginal meristems will then form blade and petiole. Protects the rip of the root as it is pushed through the soil, while the cap itself loses cells constantly. Mucigel made by the cap helps lubricate as the root pushes into the ground and it absorbs water and nutrients.
