AP BIOLOGY

Detailed explanation-1: -Unless there is a mechanism to prevent it, both hermaphrodite and monoecious species have the potential for self-pollination and self-fertilization. Eighty percent of flowering plants are hermaphroditic, which means they have both sexes in the same flower, whereas only 5% are monoecious.

Detailed explanation-2: -Both hermaphrodite and monoecious species have the potential for self-pollination leading to self-fertilization unless there is a mechanism to avoid it.

Detailed explanation-3: -Self-pollination – Self-pollination can only take place in monoecious species, where there are both male and female plant parts on the same plant. However, although a species may be monoecious, that does not mean that the plants will be self-pollinated. Walnuts are a great example of this.

Detailed explanation-4: -Many, but not all, crops are self-pollinating. This includes: beans), broccoli, cabbage, carrots, cauliflower, corn, kohlrabi, onions, and peppers. Fruit trees also self-pollinate including apples, cherries, peaches, and pears.

Detailed explanation-5: -The reproductive capacities of dioecious plant species may be limited by severe pollen limitation and narrow seed shadows for the two reasons. First, they are unable to self‐pollinate, and seed production occurs only with pollinator movement from males to females.