STEMS PDF

STEM Angelica B. Rin, RPh, MSPh  WHAT IS STEM? Angelica B. Rin, RPh, MSPh FUNCTIONS: ✢ Support leaves and reproductive structure ✢ Internal transport ✢ Produce new living tissue ✢ Asexual reproduction Angelica B. Rin, RPh, MSPh PARTS OF STEMS Bud – Under deve...

STEM Angelica B. Rin, RPh, MSPh  WHAT IS STEM? Angelica B. Rin, RPh, MSPh FUNCTIONS: ✢ Support leaves and reproductive structure ✢ Internal transport ✢ Produce new living tissue ✢ Asexual reproduction Angelica B. Rin, RPh, MSPh PARTS OF STEMS Bud – Under developed shoot that contains embryonic meristem; may be terminal or axillary Node- Area on a stem where each leaf is attached Angelica B. Rin, RPh, MSPh PARTS OF STEMS ✢ Internode – region of stem between two successive nodes. ✢ Leaf scar – where leaf attached to stem ✢ Lenticels – gas exchange Angelica B. Rin, RPh, MSPh HERBACEOUS EUDICOT STEM Angelica B. Rin, RPh, MSPh Angelica B. Rin, RPh, MSPh ASEXUAL REPRODUCTION ✢ RHIZOME - Horizontal underground stem that often serve as a storage organ Angelica B. Rin, RPh, MSPh ASEXUAL REPRODUCTION ✢ TUBERS - Thickened end of rhizome that is fleshy and enlarged for food storage Angelica B. Rin, RPh, MSPh ASEXUAL REPRODUCTION ✢ BULB - Modified underground bud in which fleshy storage leaves are attached to a short stem Angelica B. Rin, RPh, MSPh ASEXUAL REPRODUCTION ✢ Corm - Short, thickened underground stem specialized for food storage Angelica B. Rin, RPh, MSPh ASEXUAL REPRODUCTION ✢ STOLONS AND RUNNERS - Aerial horizontal stems with long internodes; often forms buds that develops into separate plants Angelica B. Rin, RPh, MSPh  REVIEW TIME!!! Angelica B. Rin, RPh, MSPh Angelica B. Rin, RPh, MSPh