Me.
what occurs in the life cycle of a moss but not in the life cycle of a gymnosperm?
in moss, sperm and egg cells are produced after haploid spores are separated from the sporophyte plant.
in moss, sperm and egg cells grow in cones that are attached to the sporophyte plant.
in moss, sporophyte and gametophyte generations alternate.
in moss, when two haploid cells fuse, they form a diploid zygote that begins the sporophyte generation.

The correct answer is:

In moss, sperm and egg cells are produced after haploid spores are separated from the sporophyte plant.

Explanation:

The life cycle of most mosses starts with the discharge of spores from a capsule, which begins when a small, lidlike structure, called the operculum, degenerates. A single spore develops to form a branched, filamentous protonema, from which a leafy gametophyte forms.

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i think its both a and b