Which of the following floral formula is correct for Solanaceae family?
Correct answer: B — Actinomorphic, bisexual, K(5) C(5)A5 (epipetalous) G(2) — gamosepalous + gamopetalous
Solanaceae shows actinomorphic, bisexual, pentamerous flowers with gamosepalous calyx, gamopetalous corolla, epipetalous stamens, and bicarpellary syncarpous superior ovary — captured by the formula with the union of K, C and epipetalous condition.
Take one flower of the family Solanaceae and write its semi-technical description. Also draw their floral diagram.
NTA tests students on identifying and describing flowers from the Solanaceae family (tomato, potato, chili, brinjal) using semi-technical botanical language. The core concept involves recognizing the characteristic features: pentamerous flowers (5 sepals, 5 petals, 5 stamens), syngenesious anthers, and simple pistil. Students commonly mistake the floral formula or make errors in drawing the floral diagram, often forgetting the specific anther arrangement or misplacing stamens. To score correctly: memorize Solanaceae as having the formula ⊕ K(5) C(5) A(5) G(2), understand syngenesious means anthers joined in a tube around the style, and practice drawing the accurate floral diagram showing characteristic alternation and orientation.
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