Fertilization occurs when sperm swim to an egg inside an archegonium.
Water is needed to transport flagellated sperm to archegonium.
Fertilization requires water.
what requires water?

[1] Power plants
[2] peachleaf willow
[3] animal transport
[4] engines
[5] Most plants
[6] mouth of rivers
[7] an organism's body
[8] fertilization