Carpels are fused in the flowers of
Lotus
Tomato
Rose
Both $(a)$ and $(c)$
Reproductive whorl of flower.
Ray florets have
Polyadelphous condition is related to
Freecentral placentation is found in
$\oint$ stands for $\ldots A \ldots$ $\oplus$ stands for ...$B$... $\%$ stands for ...$C$...
Here, $A$ to $C$ refers to