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Which four whorls are present in a complete flower?
ACalyx, corolla, androecium and gynoecium
BCalyx, corolla, receptacle and gynoecium
CSepal, petal, receptacle and androecium
DSepal, petal, perianth and the gynoecium
Answer & Solution
Correct answer: A. Calyx, corolla, androecium and gynoecium
1. A complete flower contains four whorls.
2. Those whorls are the calyx, the corolla, the androecium and the gynoecium.
3. The receptacle is the stalk bearing the flower rather than a whorl of it.
4. The perianth is not a fifth whorl either, since it is simply the calyx and corolla taken together.
_Source: OpenStax Biology (1st ed., CC BY 4.0), Ch 32 "Plant Reproduction", section 32.1 Reproductive Development and Structure_
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