Practice question
Question
Amborellaceae, Aristolochiaceae, Illiciaceae and Winteraceae are four angiosperm families that, according to the APG IV system of classification belong to the 'early diverging angiosperms ' . The presence (V+) or absence (V-) of vessels in the xylem and the fusion of the carpels within the gynoecimn are important angiospem1 characters. 'A' and ' S' indicate apocarpous (or n1onocarpellary) and syncarpous condition of ovaty, respectively. Which one of the following options correctly represents the characters found in the above families ?
Explanation
In amborellaceae, aristolochiaceae, illiciaceae and winteraceae are four, Amborellaceae: V-, A; Aristolochiaceae: V+, S; Illiciaceae: represents established outcome. functional assays confirms option B (Amborellaceae: V-, A; Aristolo) as correct, while alternatives misstate substrate or regulatory direction, contradicting textbook data.
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