A monoecious plant is a type of plant that has both male and female flowers on the same plant. The term "monoecious" comes from the Greek words for "one house," which signifies that the male and female flowers are in the same house. Monoecious plants are different from dioecious plants, which have separate male and female flowers on different plants. Some examples of monoecious plants include squash, hazelnuts, walnuts, birch, oak, and pine trees. Monoecious plants can be self-pollinating, as the male and female flowers are on the same plant. However, some monoecious plants, such as corn, have separate male and female flowers that develop at different parts of the plant.