Plants Reproduction

• Structure of an Idealized Flower

  A) Petal

  B) Sepal

  C) Anther

  D) Filament

  E) Stigma

  F) Style

  G) Ovary

  
• Flowers

  • reproductive shoots of the angiosperm sporophyte, are typically composed of four whorls of highly modified leaves called floral organs, which are separated by very short internodes.
• Stamen (Male Reproductive System)

  • consists of a stalk called the filament and a terminal structure called the anther; within the anther are chambers called pollen sacs, in which pollen is produced.
• Carpel/Pistils (Female Reproductive System)

  • has an ovary at its base and a long, slender neck called the style. At the top of the style is the sticky structure called the stigma that serves as a landing platform for pollen.
• Sepals

  • enclose and protect the floral bud before it opens, are usually green and more leaflike in appearance than the other floral organs.
• Petals

  • more brightly colored than sepals and attract the flower to insects and other pollinators.
• Two Types of Flowers based on the presence of Whorls

  1. Complete
  2. Incomplete
• Complete Flower

  • flower that is built with four parts which include the sepals, petals, pistils, and stamens.
• Incomplete Flower

  • If any of the sepals, petals, pistils, and stamens, which are integral in forming a flower, is missing, a flower is called an incomplete flower.
• Two Types of Flower based on the presence of reproductive whorls:

  1. Perfect/Bisexual
  2. Imperfect/Unisexual
• Perfect Flower

  • one in which both male and female reproductive structures are present.
• Imperfect Flower

  • flower that does not have both male and female structures.