United sepals are called ...$A$... Free sepals are called ...$B$....
Here, $A$ and $B$ refers to
$A-polysepalous; B-gamosepalous$
$A-gamosepalous; B-polysepalous$
$A-gamopetalous; B-polypetalous$
$A-polypetalouos; B-gamopetalus$
Reproductive parts of an angiospermic plant are
...... is the enlarged basal part of the gynoecium.
Male reproductive organ (flower) consists of
$A$ : In head inflorescence florets are arranged centrifugally.
$R$ : There always occurs two types of florets in a head.
Differentiate between
Apocarpous and syncarpous ovary