why are papaya and date palm plants are said to be dioecious whereas cucurbits and coconut palms monoecious inspite of - Biology -

Question

why are papaya and date palm plants are said to be dioecious
whereas cucurbits and coconut palms monoecious inspite of all of
them bearing unisexual flowers

G. Lakshmi · Accepted Answer

Papaya and date palm plants are said to be dioecious , because
these plants bears exclusively either male flowers or female
flowers

Cucurbits and coconut palms are said to be monoecious, because both
male and female flowers are borne on the same plant

why are papaya and date palm plants are said to be dioecious whereas cucurbits and coconut palms monoecious inspite of all of them bearing unisexual flowers