Which of the following is an example of a zygomorphic flower?

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Question

Which of the following is an example of a zygomorphic flower?

Accepted Answer

Correct Answer: D — PeaStep-by-step Solution:Flower symmetry refers to how a flower can be divided into equal halves:Actinomorphic (radially symmetric): Can be divided into two equal halves by more than one vertical plane. Symbol: ⊕ or *Zygomorphic (bilaterally symmetric): Can be divided into two equal halves by only ONE vertical plane. Symbol: %Evaluating options:Chilli (Capsicum): Family Solanaceae — actinomorphic (radially symmetric) flowers with 5 equal petals.Petunia: Family Solanaceae — actinomorphic (star-shaped, tubular corolla with equal petals).Datura: Family Solanaceae — actinomorphic (funnel-shaped, regular flower).Pea (Pisum sativum): Family Fabaceae (Leguminosae) — zygomorphic (papilionaceous or butterfly-shaped) corolla consisting of: 1 large posterior standard/vexillum petal + 2 lateral wing/ala petals + 2 anterior keel/carina petals that are fused. This asymmetric arrangement allows only one plane to divide it into equal halves.Extended Explanation:Other examples of zygomorphic flowers: Bean, gram, groundnut, gulmohar (Fabaceae family); Cassia (but some species are actinomorphic); Orchids; Snapdragon (Antirrhinum); Salvia. Other examples of actinomorphic flowers: Rose, Mustard, Hibiscus, Lemon, Sunflower florets, Brassica. In floral formulas and diagrams, flower symmetry is an important diagnostic feature for plant family identification. The family Fabaceae/Papilionaceae is specifically characterized by its distinctive papilionaceous (zygomorphic) corolla with 10 stamens (diadelphous — 9 fused + 1 free).Key Concepts: Flower symmetry, actinomorphic vs zygomorphic, papilionaceous corolla, Fabaceae, Solanaceae, floral morphology.

Which of the following is an example of a zygomorphic flower?

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Which of the following is an example of a zygomorphic flower?

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