Which one of the following plants is monoecious?
Pinus
Cycas
Papaya
Marchantia
A monoecious plant bears both male and female flowers, whereas a dioecious plant does the exact reverse. An organism that has separate male and female reproductive systems is said to be dioecious. Both plants produce flowers, but only one of them contains the male reproductive organs, while the other has the female reproductive parts. Pinus is monoecious. The correct option is a.