what are the general characteristics of pteridophytes?
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['Pteridophytes are the first true land plants: ... ', 'They are seedless, vascular cryptogams: ... ', 'They show true alternation of generations: ... ', 'Sporophyte has true roots, stem and leaves: ... ', 'Spores developed in sporangia are homosporous or heterosporous: ... ', 'Sporangia are produced in groups on sporophylls:']
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['These organisms are multicellular, eukaryotic and without chlorophyll.', 'The cells possess no cell walls and plastids.', 'Central vacuoles are absent but small vacuoles may occur.', 'Most of them are free moving (except sponges and some coelentrates)', 'Nutrition is primarily ingestive.']
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['Rigidity and support.', 'Drainage.', 'Ease of penetration of roots.', 'Aeration.', 'Moisture storage capacity.', 'Retention of plant nutrients.']
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Bryophytes are embryophytes that are non-vascular i.e., they have no xylem and phloem. Pteridophyte are vascular plants i.e., plants with xylem and phloem, that reproduce and disperse via spores. The dominant phase in bryophyte is gametophyte while the dominant phase in pteridophyte is sporophyte.
1399232
With their interesting foliage and textures, ferns are easy to grow and require little maintenance. Some species are evergreen, giving year-round interest, while others die back in autumn and produce new shoots (also known as croziers) in spring.
889464
List the characteristics that distinguish plants from other organisms in other kingdoms. They are eukaryotic, autotrophic (photosynthetic) organisms with true organs and tissues. Individual cells are surrounded by a cellulosic cell wall. Non-motile, having alternation of generations life cycle.
80639
['They are non-motile.', 'They usually reproduce sexually.', 'They follow the autotrophic mode of nutrition.', 'These are multicellular eukaryotes with cell wall and vacuoles.', 'These contain photosynthetic pigments called chlorophyll in the plastids.']
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['Division Bryophyta. These include mosses and liverworts.', 'Division Pteridophyta. These include the ferns and horsetails. They show a greater variety and a greater ability than bryophyte.']
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A fern is any one of a group of about 20,000 species of plants classified in the phylum or division Pteridophyta, also known as Filicophyta. The group is also referred to as polypodiophyta, or polypodiopsida when treated as a subdivision of tracheophyta (vascular plants).
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Bryophytes do not have a true vascular system and are unable to pull water and nutrients up from the ground at any significant distance. Lacking this specialized system distinguishes bryophytes from ferns and flowering plants. It is for this reason that they are considered to be rather primitive plants.
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Name the chief characteristics of a cactus. Areoles - Flowers, branches, spines sprout from these- no other plant has this feature. Spines - Perhaps the most familiar feature of cacti, spines can vary greatly in appearance, shape, size, and color. Spines are not thorns.
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['Rapid growth and maturity.', 'Prolific seed production.', 'Highly successful seed dispersal, germination and colonization.', 'Rampant vegetative spread.', 'Ability to out-compete native species.', 'High cost to remove or control.']
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['Fast growth.', 'Rapid reproduction.', 'High dispersal ability.', 'Phenotype plasticity (the ability to alter growth form to suit current conditions)', 'Tolerance of a wide range of environmental conditions (Ecological competence)']
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Pteridophytes are better known as the 'Vascular Cryptogams' because they possess vascular tissue for the conduction of water and food material. They occupy an intermediate position between Bryophytes and Phanerogams (seed plants). Bryophytes and Pteridophytes are evolutionarily related and they show many similarities.
1383253
Difference Between Bryophytes and Pteridophytes. Bryophytes are non-vascular plants, without xylem and phloem. ... On the contrary, pteridophytes are vascular plants with xylem and phloem. The dominant phase in pteridophyte is the sporophyte.
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Similar to flowering plants, ferns have roots, stems and leaves. However, unlike flowering plants, ferns do not have flowers or seeds; instead, they usually reproduce sexually by tiny spores or sometimes can reproduce vegetatively, as exemplified by the walking fern.
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Physical characteristics Monocot plants are marked by seeds with a single cotyledon, parallel-veined leaves, scattered vascular bundles in the stem, the absence of a typical cambium, and an adventitious root system.