plants

• a typical flower has four main parts
• Flower


  Has four main parts or whorls: calyx, corolla, androecium, and gynoecium
• Calyx


  • Outermost whorl of the flower, has green, leafy structures known as sepals, helps to protect the unopened bud
• Corolla


  • Second whorl, comprised of petals, usually brightly colored
• Perianth


  Collective term for the calyx and corolla
• Androecium


  • Third whorl, contains the male reproductive structures, has stamens with anthers that contain the microsporangia
• Gynoecium


  • Innermost group of structures, the female reproductive component(s), has carpels with stigma, style, and ovary
• Complete flower


  Has all four whorls present
• Incomplete flower


  Missing any of the four parts
• Perfect, androgynous, or hermaphrodite flower


  Contains both an androecium and a gynoecium
• Staminate flower


  Contains only an androecium
• Carpellate flower


  Has only a gynoecium
• The number of sepals and petals varies depending on whether the plant is a monocot or dicot
• the carpel is the individual unit of the gynoecium and has a stigma, style, and ovary
• The reproductive system of an organism, also known as the genital system, is the biological system made up of all the anatomical organs involved in sexual reproduction.