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.
