BISC 101 Lecture Notes - Lecture 8: Stoma, The Leaves, Phloem
15 Dec 2017
School
Department
Course
Professor
Document Summary
For each cell or tissue, describe its general structure (e. g. , size of the cell, living vs. dead, thickened cell walls, etc. ), and function (i. e. , how these cells contribute to photosynthesis, gas exchange and transpirational pull). Cells form a single layer, are tightly packed on the upper and lower surface of the leaf, are living, have thin cell walls (i. e. , are parenchyma) Protection from the environment, secrete a waxy cuticle to prevent water loss via evaporation. Living cells surrounding the stoma with uneven thickness. Open or close to allow co2 to enter for gas exchange of cell walls. Elongated, living cells in the phloem phloem with perforation. Allows the flow of nutrients and sugars within the plant. A layer of cells in the interior of the leaves that consists of. Functions in gas exchange and photosynthesis plates living, loosely arranged, irregular shaped cells that have chloroplasts. Functions in supporting and containing lignin. protection of the plant.
