BIOL 244 Study Guide - Quiz Guide: Cell Nucleus, Gametophyte, Archegonium
Document Summary
Flower: an aggregation of specialized leaves arranged on a stem of determinate growth (cid:12254) Typical ower possess four whorls or rings of specialized leaves. All of the sepals are collectively called the calyx. Sepal: the outermost whorl of modi ed leaves and the part that encloses the other oral parts while the ower is still in the bud stage. Petal: inside of the sepal and often highly colored and conspicuous. Stamen: highly modi ed microsporophylls that consists of a lament and an anther. All of the petal are collectively called the corolla. Anther: pollen-producing part of the stamen and often made up of four fused microsporangia. All of the stamps are collectively called the androecium. Carpel: innermost whorl and the highly modi ed megasporophylls. All of the carpel are collectively called the gynoecium. Incomplete ower: missing one or more of the four whorls. Perfect ower: contains both the stamen and carpel (which are essential for the sexual cycle)
