HORT 202 GENERAL HORTICULTURE LABORATORY Lab 2: Recognition of Plant Structures

INTRODUCTION ROOTS origin function   LEAF MORPHOLOGY simple leaf compound leaf leaf arrangement   LEAF TYPES  simple leaf compound leaf   MODIFIED LEAVES   STEM MORPHOLOGY    MODIFIED STEMS   TYPICAL FLOWERS   FRUIT PARTS   CLASSIFICATION OF FRUIT simple fruit aggregate fruit multiple fruit

FRUIT PARTS pericarp the fruit wall (derived from the ovary of the pistil) which is composed of the exocarp, mesocarp and endocarp (the three layers are not always recognizable, ex. dry fruit) endocarp the innermost layer of the pericarp (often hard, stony or papery)  mesocarp the middle layer of the pericarp (often fleshy)  exocarp the outermost layer of the pericarp (often like a skin or peel). (peach) Peach   rind tough, leathery covering on many fruits either composed of the exocarp (melon) or the exocarp and mesocarp (orange). Lemon accessory tissue fruit parts not directly derived from the ovary, for example, receptacle tissue of pomes (apple) and the husks of nuts (acorn, pecan). Apple

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