Final answer:
Monoecious plants have both male and female flowers on the same individual, while dioecious plants possess only male or female flowers on any given plant. The correct terminology for the two types of plant species is 'monoecious' for the former and 'dioecious' for the latter.
Step-by-step explanation:
The plant species with separate male and female flowers on the same individual are called monoecious, and plant species with only male or female flowers on an individual are called dioecious. As such, the correct answer is b. monoecious, dioecious.
Monoecious plants, such as corn and most species of squash, are referred to as "one house" because they house both sexes on a single plant. This means they have unisexual flowers, with male and female flowers occurring separately but on the same plant. On the other hand, dioecious plants like aspen and holly, meaning "two houses," have either male or female flowers, but not both, on any given individual plant. This promotes cross-pollination and increases the genetic diversity within a species, as male and female flowers must come from different individuals.
Perfect flowers are different in that each flower has both male (stamens) and female (carpels) reproductive structures, and while many angiosperms possess perfect flowers, they still largely depend on cross-pollination to promote genetic variation.