Monoecious Angiosperms : Plants bear both male and female unisexual flowers on the same plant. e.g., Cucurbits/coconut/maize.
Dioecious**Angiosperms :**Plants bear either male or female unisexual flowers on different plants. e.g., Papaya/date palms.
Detailed Answer :
The plants are said to be monoecious if both male and female unisexual flowers are present on the same plant and if the unisexual male and female flowers are present on separate plants then they are called as dioecious.
