When all the stamens fuse forming a single bundle, it is called
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monadelphous
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diadelphous
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syngenesious
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epipetalous
A
Correct answer
Explanation
Monadelphous condition occurs when all stamens are united by their filaments into a single bundle (as in Malvaceae). Diadelphous means two bundles (nine + one in Fabaceae). Syngenesious means fused anthers with free filaments (Asteraceae). Epipetalous means stamens attached to petals.