Why is Moss a bryophyte?
Then, why are mosses called bryophytes?
Mosses and liverworts are lumped together as bryophytes, plants lacking true vascular tissues, and sharing a number of other primitive traits. They also lack true stems, roots, or leaves, though they have cells that perform these general functions. Remember that these gametophytes are always haploid (1N) plants.
Similarly, you may ask, what is the role of Moss in an ecosystem?
For insects and other invertebrates, mosses can provide a great habitat and source of food. At a larger scale, mosses perform a number of functions that help ecosystems perform effectively such as filtering and retaining water, stabilizing the ground and removing CO2‚ from the atmosphere.
A moss is a flowerless, spore-producing plant - with the spores produced in small capsules. The spore capsule, often with a supporting stalk (called a seta), is the sporophyte and this grows from the gametophyte stage. You will commonly see the statement that a moss gametophyte consists of leaves on stems.