Question

Why are Bryophytes called Non vascular cryptogams?

Answer 1

The liverworts, hornworts, and mosses are three divisions of non-vascular terrestrial plants that make up the bryophytes. They are typically small and prefer damp surroundings, however they can thrive in drier ones as well. About 20,000 plant species make up the bryophytes.

Complete answer:
Flowers and seeds are not produced by bryophytes, which develop enclosed reproductive structures (gametangia and sporangia). They reproduce by dispersing spores. Although some studies have yielded contradictory results, bryophytes are commonly considered a paraphyletic group rather than a monophyletic group.
Bryophytes can be found in a wide range of environments. They grow in a variety of temperatures (cold arctic and hot deserts), elevations, and moisture levels.
Bryophytes can grow in places where vascularized plants cannot because they do not rely on roots to absorb nutrients from the soil. Bryophytes can live on rocks as well as bare soil.
Embryophytes include bryophytes (land plants). They are non-vascular plants that lack vascular tissues (xylem and phloem) for the transportation of food, water, and minerals, even if they are present in some. Because their reproductive systems are hidden and seeds aren't present, they're cryptograms.
The following are characteristics of bryophytes:
A multicellular gametophyte stage dominates their life cycles.
The sporophytes of these plants are unbranched.
They lack true vascular tissue that contains lignin (although some have specialised tissues for the transport of water)

Note:
Bryophytes, like all terrestrial plants (embryophytes), have life cycles that alternate generations. Each cycle, a haploid gametophyte, with a fixed number of unpaired chromosomes in each cell, alternates with a diploid sporophyte, with two sets of paired chromosomes in each cell.