What we do is we put a monarch in a big cage, a medicinal plant on one side, a non-medicinal plant on the other side, and then we measure the number of eggs that the monarchs lay on each plant.
Umisťujeme monarchy do velké klece, léčivé rostliny na jednu stranu,  neléčivé na druhou a pak počítáme kolik vajíček monarchové  nakladli na každou z rostlin.