Biology / Unit 10 Bio 2197 short lesson, about 20 seconds
Flower Structure
Captions available
The idea
A complete flower carries four organ types arranged in whorls: sepals, petals, pollen-bearing stamens, and ovule-containing carpels.
In practice
A stamen's anther produces pollen; a carpel's ovary at its base houses one or more ovules awaiting fertilization.
Where people slip
Not every flower carries all four organ types — an incomplete flower can lack sepals, petals, or a whorl and still function.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
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