Androecium: Definition & Concept

Androecium: Definition & Concept
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  • 0:01 What is the Androecium?
  • 0:56 Parts of the Androecium
  • 2:23 Lesson Summary
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Lesson Transcript
Instructor: Angela Lynn Swafford

Lynn has a BS and MS in biology and has taught many college biology courses.

You have probably heard of pollen before; you might even be allergic to it. But do you know what part of a flower makes pollen? Learn more about the structure of an androecium in this lesson.

What is the Androecium?

Flowers are made up of both reproductive and non-reproductive structures arranged in four whorls. These include the calyx, the corolla, the gynoecium, and the androecium.

  1. Calyx: outermost whorl made up of usually green, leaf-like structures called sepals
  2. Corolla: whorl that contains often brightly colored petals
  3. Androecium: third whorl that contains male reproductive structures called stamens
  4. Gynoecium: innermost whorl made up of female reproductive structures called carpels

Both the calyx and corolla are the non-reproductive structures of a flower, while the androecium and gynoecium are the reproductive structures. The gynoecium produces egg cells, and the androecium produces sperm cells. In this lesson, we will focus on the structure of the androecium.

The Parts of the Androecium

Let's take a look at the different parts of the androecium.

A stamen is the unit of an androecium. The plural of stamen is either stamina or just stamens. An androecium is usually made up of multiple stamina; each is composed of two parts, the filament and the anther.

  1. Filament: the long, thin stalk of a stamen
  2. Anther: the top of a stamen that produces pollen grains

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