Is Psilotum a gametophyte or sporophyte?
Sporophyte: The plant body of Psilotum is sporophytic branched rhizome system and dichotomously branched, slender, upright, green aerial systems (Fig. 7.11 A) that bears small appendages and synangia (singular: synangium).
Are Psilotum sporophyte dependent on gametophyte?
The resulting zygote develops into an embryo, which in turn develops into a young sporophyte. The young sporophyte stage is dependent on the gametophyte for support until it grows through the soil and begins photosynthesis.
What is the morphology of Psilotum?
Morphology: ADVERTISEMENTS: The plant body of Psilotum is differentiated into two parts viz., a horizontal underground rhizome and an erect aerial shoot. The rhizome is brownish in colour and dichotomously branched. There are no roots.
Is gametophyte of Psilotum is photosynthetic?
Spores are reniform and monolete. Gametophytes are non-photosynthetic, cylindrical, saprophytic, and mycorrhizal; sperm are multiflagellate. The Psilotaceae are distributed worldwide in tropical or warm temperate regions. The two genera are: Psilotum (2–3 spp., tropical and warm regions worldwide) and Tmesipteris (ca.
Does Psilotum have vascular tissue?
The genus Psilotum contains two species and one hybrid (P. complanatum, P. nudum, and P. x intermedium) of pantropical plants with whisklike green stems and scalelike appendages called “enations,” which may represent reduced leaves, but they contain no vascular tissue (veins).
What is the sub division of Psilotum?
Division. Tracheophyta – vascular plants, tracheophytes. Subdivision. Polypodiophytina.
What phylum is Psilotum?
| Psilotum | |
|---|---|
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Division: | Polypodiophyta |
| Class: | Polypodiopsida |
Does Psilotum have xylem and phloem?
The Psilotum Rhizome has the most simple kind of tissue organization with Xylem at the center, surrounded by Phloem, Endodermis, Ground Tissue and Epidermis.
How does the gametophyte of a true fern differ from that of a moss?
The gametophyte is prominent is mosses, but the sporophyte is prominent in ferns. The sporophyte of ferns is differentiated into true leaves, stem, and roots. In contrast, mosses lack true leaves, stem or roots. Ferns are vascular plants, but mosses are not.
Does Psilotum have xylem phloem?
Where is Psilotum found?
P. nudum is found in tropical Africa, Central America, tropical and subtropical North America, South America, tropical Asia, Australia, Hawaii, southern Japan, Lord Howe Island, New Zealand, with a few isolated populations in SW Europe (“Los Alcornocales”, Spain, Cádiz province).
What are the differences between moss and ferns?
Ferns have vascular tissues, whereas mosses do not have vascular tissues. Ferns have roots, stems and leaves on the other hand, mosses do not have roots, stems and leaves. Ferns belong to Pteridophyta and mosses belong to Bryophyta.