Structure of a Flowering Plant

Shoot System

This part of plant is above the ground.

Made up of stem, leaves, and structures for reproduction (angiosperms- flowers)

Stem

  • Generally above the ground
  • Support plant
  • Separate the leaves
  • Trees- trunk and all the branches
  • Vines of grapes and ivy
  • Leaf-bearing stalks of herbs and grasses

A Stem has Nodes and Internodes

  • Nodes- Points where leaves are attached
  • Internodes- Regions between nodes

Leaves- color green

Main photosynthetic organs in most plants
  1. Blade- thin, flattened; largest portion of leaf
  2. Petiole- stalk joins the leaf to a node of the stem

Lateral Bud


  • Point just above where a leaf attaches to the stem.
  • It is a young, inactive shoot and will eventually grow into a new leaf-bearing branch.

Shoot Apex

  • At tip of stem where growth will occur

Flower

  • Sexual reproduction organ in angiosperms

Fruit

  • Mature ovary that acts as a vessel, housing and protecting seeds and helps disperse them from the parent plant.

Root System

This part of below the ground

  • Anchors the plant in the soil
  • Absorbs and transports water and minerals from soil
  • Stores carbohydrates

Primary root

  • Can be a fibrous root or a taproot

Lateral Roots

  • Branch out to the sides
  • Anchors and absorbs until a tangled mass of roots results