I put some peat in the container when I am potting or repotting plants.
Yes. Autotrophs produce their own food, usually by photosynthesis. Mosses are green plants that can produce their own food from sunlight by photosynthesis.
Mosses are nonvascular plants.
In some places it is, but it is usually covered with mosses and low plants that cover and hide rocks.
because they are plants
More primitive plants have no vascular tissues (or any tissues for that matter), so yes, there are non-vascular plants. Mosses and liverworts (Bryophytes) would be examples.
Ferns are seedless vascular plants while mosses are just seedless.
mosses...
no
There are 11 main phyla of non-flowering plants, including mosses and club mosses. Though some plants are called mosses (e.g. scotch moss), these flowering plants aren't true mosses.
mosses... nova.
Mosses, ferns, and liverworts have no plants.
Mosses, liverworts, and hornworts