All the plants like fern and mosses, which produce spores are grouped under

The correct option is cryptogams.

To understand why this is the correct classification, let us break down the division of the plant kingdom step-by-step:
1. Classification of the Plant Kingdom: The plant kingdom is broadly divided into two major groups based on their reproductive structures: Cryptogams (non-seed-bearing, spore-producing plants) and Phanerogams (seed-bearing, flowering plants).
2. What are Cryptogams? The term "Cryptogamae" is derived from the Greek words kryptos (meaning hidden) and gamos (meaning marriage or reproduction). These plants reproduce by producing spores instead of seeds or flowers. Because they do not have visible reproductive structures like flowers, their reproduction is considered "hidden."
3. Subdivisions of Cryptogams: The group Cryptogams is further classified into three distinct plant divisions:
- Thallophytes: Very simple plants (like algae) that lack true roots, stems, or leaves.
- Bryophytes: Non-vascular land plants (such as mosses and liverworts) that require water for sexual reproduction.
- Pteridophytes: Vascular plants (such as ferns and horsetails) that have specialized tissue for transporting water and nutrients.

Since both mosses (which are bryophytes) and ferns (which are pteridophytes) reproduce through spores and do not produce seeds or flowers, they are collectively grouped under the category of cryptogams.

Why other options are incorrect:
- bryophytes: While mosses belong to this group, ferns do not (ferns are pteridophytes). Therefore, this category is too narrow to group both together.
- thallophytes: This group includes primitive plants like algae that do not possess a differentiated body structure, excluding mosses and ferns.
- sporophytes: This is not a taxonomic plant group, but rather a term describing the diploid, spore-producing phase in the alternation of generations life cycle of a plant.