BIOL 1202 Chapter : Chpt 35
Document Summary
Plants draw nutrients from 2 very different environments: above and below ground. Organized into root (contains roots-below ground) and shoot (contains stems and leaves above ground) systems. Root hairs increase the surface area of the root. Root hairs: laments that extend off of roots. Axillary buds: potential to form lateral shoot (i. e. branch) Terminal bud: located at shoot tip, causes elongation of a young shoot. The leaf is the main photosynthetic organ of most vascular plants. The petiole: joins the leaf to a node of the stem. Double compound leaf: each lea et is divided into smaller lea ets. Vascular: carries out transport of materials between roots and shoots. Xylem: conveys water and minerals up from roots. Phloem: transports organic nutrients from sources to sinks. Parenchyma: thin exible 1 degree cell walls; alive at maturity; carry out most metabolism within plant. Collenchyma: unevenly thickened, but exible one degree cell walls; alive at maturity; supports young growing stems.
