BSC 1005 Lecture Notes - Lecture 27: Dicotyledon, Cotyledon, Root System
Document Summary
Read textbook sections: 25. 1 - 25. 6 (up to primary growth) Sclerenchyma, xylem, phloem, axillary and apical buds, petiole, node, internode. Autotrophs reproduce by means of flowers seed producing plants annuals: plants that complete their lifecycle within one year: ex: wild flowers, beans biennials, ex: carrots, beets, lily perennials, ex: oak, lawn grasses. Variously used commercial products: wood, bark, paper, medicines, food, clothing, etc. Dicotyledonae: 2 cotyledons in the seed: ex: dandelion, magnolia, rose, leaves: netted venation, tap roots, vascular bundles in a ring, flowers parts in 4/5s, pollens: 3 pores, 2 ry growth present. Monocotyledonae: 1 cotyledon in the seed: grass, lily, leaves: parallel, roots fibrous, vascular bundles scattered, flowers parts in 3s, 1 pore, absent. The distribution of t. s. is different for stems and roots. Meristem: consists of cells capable of dividing repeatedly. Tissue is a group of cells performing a common function. P. m. is found at the tip of roots and shoots.
