The question is incomplete. The correct question is:
Match the following with what describes it best:
Monoecious plants Dioecious plants Angiosperms Gymnosperms
A. has megasporangiate and microsporangiate flowers on the same plant
B. has megasporangiate and microsporangiate flowers on different plants
C. produce flowers and fruits
D. produce seeds that are not protected by the ovary
Answer:
Monoecious plant - A
Dioecious plant - B
Angiosperms - C
Gymnosperms - D
Explanation:
Monoecious plants are referred to as bisexual plants, that is, they have both male and female reproductive organ in the same plant while dioecious plants are also called as unisexual plants, that is, each plants with have male reproductive part or female reproductive parts.
Angiosperms and Gymnosperms are two major groups of vascular seed plants.
Gymnosperms are plants which produce naked seeds. The seeds unenclosed or are not enclosed in the fruits. Gymnosperms are majorly perenial.
Angiosperms are flowering plants. They produce seeds enclosed within an ovary (majorly A fruit). Angiosperms are majorly non-perenial.