What do the moss life cycle and the fern life cycle have in common?

In both mosses and ferns, fertilization joins a haploid sperm and egg, producing a diploid zygote (2n). That zygote develops into the sporophyte, so the correct choice is “Fertilization produces a diploid cell.” Mosses and ferns do not produce fruits or undergo double fertilization, and the zygote begins the sporophyte phase, not the gametophyte phase.

AI-written and checked against the verified answer.