Fertilization occurs when sperm swim to an egg inside an archegonium, and water is needed to transport flagellated sperm to archegonium. Given these facts, what requires water among the following options:
- Power plants
 - peachleaf willow
 - animal transport
 - engines
 - Most plants
 - mouth of rivers
 - an organism's body
 - fertilization


 

        fertilization 