BISC 101 Study Guide - Final Guide: Hypogeal Germination, Seed Dispersal, Epigeal Germination
19 Jul 2015
School
Department
Course
Professor
Document Summary
Leaves, flowers, fruits and seeds: leaves, covered by layer of epidermal cells on upper and lower surfaces. Palisade mesophyll in right angles to upper surface of leaf. Structure well adapted to its role in plant reproduction. Produce seeds and fruits for dispersal of the species. Loss of water by evaporation from leaf surface primarily by stomata: water loss can by reduced by closing stomata. = high rate of water loss from leaf. Net result = an increase in water demand by plants: effect is greater at lower humidity than at higher humidity conditions, transpiration rate decreases with high relative humidity. When air is humid perspiration can"t evaporate as fast: effect is greater at higher temp. Anatomical modification of leaves: important because leaves have largest s. a of plant for water to be lost and where photosynthesis occurs. Waxy cuticle that reduces evaporation of water from the leaf surface. Large thin walled cells in cortex that store water.
