The perianth term used when

Androecium and gynoecium are similar

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Calyx and corolla are similar

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Androecium and calyx are similar

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Corolla and gynoecium are similar

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Solution

The correct option is B Calyx and corolla are similar
The perianth term used when calyx and corolla are similar. The perianth is the non-reproductive part of the flower and structure that forms an envelope surrounding the sexual organs, consisting of the calyx (sepals) and the corolla (petals).
Therefore, the correct answer is option B.

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