Pterophytes or fern are the most diverse phylum of seedless plants, containing approximately 11000 species (in at least 17 families), about three quarters of which are found in the tropics.
Leaves are diverse in size and shape; size varying from just 1cm to up to 5m in some tree ferns. The fronds are coiled and unfurl as the plant grows.
Sporangia are often on the underside of leaves.
They are vascular, and seedless plants that live in tropical, or at times temperate climates.
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The study of inherited characteristics is genetics.
Pterophytes typically grow along stream beds or in damp forests.
cryptogams r divided into three plants.thallaphytes, bryophytes and pterophytes . thallaphytes and bryophytes show the absense of true leaves,seeds and stems. pterophytes r the most complex cryptogams which show the presese of true leaves,stems and seeds but they dont have flowers.all types of ferns are pterophytes.
375 Million years ago
1.5 billion years ago (bya)
The first fossils of pterophytes, also known as ferns, are known from the early Carboniferous, around 350 million years ago. The first modern families of ferns are known to have appeared during the Triassic.
400 Million years ago hope this helps :D
you have to do this as a science project for bio
It's because pterophytes are vascular plants that contains vascular tissues which support growth. Bryophytes are nonvascular plants, they don't have vascular tissues that's why it doesn't grow too large. ! Vanessa =D
Horsetails are not a seed plant because they are a seedless vascular plant and fall into the catergory pterophytes. According to the diversity of plants Seed Plants evolved in about 360 mya after Pterophytes (about 420 mya) . So in order for a plant to be a seed plant it should fall into the plant group of either Gymnosperm or Angiosperm.
The four main phyla of the plant kingdom are: 1) Bryophyta (mosses), 2) Pteridophyta (ferns), 3) Coniferophyta (conifers), and 4) Angiospermophyta (flowering plants). Each phylum represents a distinct group of plants with unique characteristics and reproductive structures.
The four groups of vascular plants are Lycophytes, Pterophytes, Gymnosperms, and Angiosperms.Plants in the following groups are:Lycophytes: Club mosses, Spike Mosses, QuilwortsPterophytes: Ferns, Horsetails, Whisk FernsGymnosperms: Ginko tree, ConiferAngiosperms: Flowers
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