Fact 1: Female gametophytes produce eggs inside the ovaries of flowers. Fact 2: Unlike the unisexual gametophytes of a moss, a fern gametophyte is bisexual. Given the two facts above, what can produce eggs inside ovaries of flowers?

Choices: (i) peachleaf willow (ii) Most plants (iii) animals (iv) female ferns (v) pollen (vi) insects (vii) honeybees (viii) Plant reproduction
The answer is:
(iv)