Pulses belong to which family?

The alkaloid $Ajmalicine$ is obtained from which of the following plants?

The correct representation of the alkaloids obtained from Opium in terms of their relative abundance or typical classification is:

The medicinally most important part of $Rauwolfia \text{ } serpentina$ is:

Which drug is effective for whooping cough and jaundice?

What is $Hevea$ a source of?