The structure of Flowering Plants

The structure of Flowering Plants

1. the external

   • Roots
     • Roots are found below Ground
     • Function
       • to anchor
       • absorbs water
       • stores food
     • Types
       • TAP ROOTS
         • The primary roots
           • lateral or secondary roots emerge from tap root
             • tiny root hairs grow from lateral roots
               • example- carrot
       • FIBROUS
         • roots form a mass of equally sized branched roots
         • grows more shallow
         • "hairy"
         • example: grasses
       • ADVENTITIOUS
         • Roots that emerge from other parts of the plant
     • Longitudinal Section of a root
       • Protection: Root Cap
         • proteccts root tip as it emerges from soil
       • cell production: Meristem
         • mitosis
         • Apical Meristems located root and shoot tips
       • elongation: plant growth regulators
       • differentiation: Root hairs form. identical cells change to form new tissues
     • Transverse Section of Root
       • the new cells formed by meristems form 3 types of tissues
         • 1. Dermal tissue: protective layer
         • 2. Vascular Tissue: transport
           • xylem carries water and minerals
           • phloem carries food
         • 3. Ground tissue

2. objectives

   • the external structure of a flowering plant
   • Classification of flowering plants

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