What Is a Corolla on a Plant?
On a plant, the corolla is the brightly colored group of petals that forms the flower. The corolla emerges from the green sepals, also called the calyx, that protect the bud before it opens. Does this Spark an idea?
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Function
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Flowers are the showiest parts of plants. The bright colors and sometimes intense fragrance of their corollas are designed to attract pollinating birds, such as hummingbirds, and insects, such as bees.
Features
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The corolla and calyx form the part of the plant called the perianth. Together, they form the entire bud that houses and protects all the plant's reproductive organs. The corolla sometimes produces nectar, a substance that is particularly attractive to butterflies, wasps and bees.
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Considerations
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The petals of the corolla may be separate, like daisies, or fused together to form a tube, like the flowers of the trumpet vine. Corollas whose sides are mirror images of each other are called actinomorphic, while asymmetrical flower petals are classified as zygomorphic.
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References
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