biology

• Flower


  A specialized shoot in which the leaves are modified into floral structures
• Flower


  • Usually the most beautiful and conspicuous part of a plant
  • Performs the function of reproduction in flowering plants
• Pedicel


  The stalk that supports the flower
• Thalamus


  The enlarged tip of the stalk that the floral parts are borne on
• Arrangement of floral parts

  1. First whorl: sepals (calyx)

  2. Second whorl: petals (corolla)

  3. Third whorl: stamens (androecium)

  4. Fourth whorl: carpels (gynoecium)
• Stamen


  The male part of the flower, consisting of a filament and an anther
• Carpel


  The female part of the flower, consisting of an ovary, style and stigma
• Complete (or perfect) flower


  Contains all four floral whorls
• Incomplete (or imperfect) flower


  Missing one or more sets of floral whorls
• Essential (reproductive) parts of a flower

  • Stamens (male parts)
  • Carpels (female parts)
• Non-essential (accessory) parts of a flower

  • Parts that protect the reproductive parts
  • Parts that make the flower attractive for pollination
• Proteins carry out most functions within cells.

  
• Chromosomes are made up of genes that contain instructions on how to make proteins.