Question

Thallophyta, Bryophyta and Pteridophyta are called as
A. Phanerogams
B. Cryptogams
C. None of the above
D. All of the above

Answer 1

Hint:
> Thallophyta is one amongst the division of the Plantae. It includes primitive land plants like fungi, lichens and algae. These plants are simple and that they grow without roots, leaves and stems.
> Bryophyta may be a group of non-vascular plants. They grow densely during a sort of carpet. These plants lack a plant tissue system. they're dependent upon capillarity for the upright movement of water.
 > Pteridophytes are vascular plants. These disperses spores. Their reproductive structures are hidden. These plants don't produce leaves and stems.

Complete answer:
In order to answer this question we need to discuss Thallophyta, Bryophyta and Pteridophyta in detail.

Thallophyta:
Thallophyta is a phylum that has seedless plants and plant-like organisms. This consists of algae, fungi, lichens, and bacteria. Thus, Thallophyta may be a polyphyletic group of non-mobile organisms, whose plant body is described as a thallus.
All Thallophytes are autotrophic and produce their own food. The food is stored within the variety of starch.
Include unicellular to large algae, fungi, lichens.
The two subdivisions of Thallophyta are Euthallophyta and Myxo Thallophyta.

Bryophyta:
Bryophytes are a casual group consisting of three divisions of non-vascular land plants (embryophytes): the liverworts, hornworts and mosses.
They're characteristically limited in size and like moist habitats although they will survive in drier environments and reproduce via spores.
Their life cycles are dominated by the gametophyte stage
Their sporophytes are unbranched
They don't have a real plant tissue containing lignin (although some have specialized tissues for the transport of water)

Pteridophyta:
Pteridophytes (ferns and lycophytes) are free-sporing vascular plants that have a life cycle with alternating, free-living gametophyte and sporophyte phases that are independent at maturity.
The body of the sporophyte is well differentiated into roots, stem and leaves.
The stem is either underground or aerial. The leaves could also be microphylls or megaphylls.
Their other common characteristics include flora apomorphies (e.g., vascular tissue) and land plant plesiomorphies (e.g., spore dispersal and therefore the absence of seeds).

Note:

Thallophyta	Bryophyta	Pteridophyta
Plant body is thallus, not differentiated into root, stem and leaves.	Plant body does not have true roots, stems and leaves but shows root-like and leaf-like structures.	Plants have true roots, stems and leaves.
There is no vascular system (i.e., conducting tissue which can transport water, minerals and food.	True vascular system is absent.	True vascular system is present.
Sex organs are unicellular.	Sex organs are multicellular.	Sex organs are multicellular.
No embryo formation takes place after fertilization.	Embryo is formed after fertilization.	Embryo is formed after fertilization.
Example: Algae.	Example: Mosses.	Example: Ferns.