BIOXI05: MORPHOLOGY OF FLOWERING PLANTS
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The perianth is the term used when
1 Androecium and gynoecium are similar
2 Androecium and calyx are similar
3 Corolla and gynoecium are similar
4 Calyx and corolla are together
Explanation:
Perianth is the collective name of the nonessential floral organs if there is no distinction between sepals and petals.