4. 3. In such cases there are two types of spore and the plants are therefore described as heterosporous. 1. xref Plant body is a sporophyte (2n) and differentiated into true stem, leaves and roots. Members of this group are most primitive living vascular plants. The body of the sporophyte is well differentiated into roots, stem and leaves. They are the vascular plants (those having xylem and phloem tissues) that reproduce by releasing spores rather than seeds, and they include the highly diverse true ferns and other graceful, primarily forest-dwelling plants. Well-differentiated vascular tissues are present. Vascular tissues (xylem and phloem) are present. These functions help support certain organisms and other small forms of life in the ecosystems in which they exist, explains McDaniel College. 0000017403 00000 n The main plant body is a sporophyte. Privacy Policy3. Pteridophytes are the first true land plants: It is speculated that life began in the oceans, and through millions of years of evolution, life slowly adapted on to dry land. Describe the classification of Pteridophytes. 0000017519 00000 n Archegonia are partially embedded. Characteristics of Pteridophytes, Morphology of Pteridophytes, Reproduction of Pteridophytes, Homosporous and Heterosporous Pteridophytes, Megaspore and Microspores, Gametophytes of Pteridophytes, Fertilization, Zygote and Embryo of Pteridophytes, Life Cycle and Alternation of Generation. What is an angiosperm? 0000008756 00000 n 0000000016 00000 n Before sharing your knowledge on this site, please read the following pages: 1. Which organelle is known as “power house” of the cell? 1. Ecological importance: The liverworts, mosses and lichens are supposed to be the pioneers in establishing vegetation where other vegetation seems to be practically impossible. The soil is protected from erosion. Short classification of the ferns : Radosław Janusz Walkowiak. %PDF-1.4 %���� 11. Welcome to BiologyDiscussion! %%EOF Feel free to … 1. The innhabitants of dry land are Selaginella rupestris, Selaginella lepidophylla, Equisetum arvens etc. 0000005512 00000 n 0000016767 00000 n Instead, the water and minerals flow from the surface of the plant- cell to cell in the … INTRODUCTION: Pteridophytes (pteron= feather, phyton= plant, i.e. Species of Sphagnum, a moss, provide peat that have long been used as fuel, and as packing material for trans-shipment of living material because of their capacity to hold water. They formed the dominant part of the earths during Palaeozoic and Mesozoic periods on soral evolution. TOS4. A few plants are heterosporous, i.e., with two types of spores, microspores and megaspores, e.g., Selaginella, Salvinia, Marsilea. 0000071151 00000 n 7. By their growth pteridophytes bind the soil even along hill slopes. The Pteridophytes are an economically important group of plants. 7�J�aL����|�m�&�.d� a��c������,����_]i�8`P��֭��Ш.a�q�����'3�u�� 2. Bryophytes in general are of little economic importance but some mosses provide food for herbaceous mammals, birds and other animals. It is differentiated into root, stem and leaves. To select a good EI, four sets of these criteria must be evaluated. This website includes study notes, research papers, essays, articles and other allied information submitted by visitors like YOU. 3. Extant pteridophytes are cosmopolitan but are much better represented in the humid tropics, with only a few families (e.g., Dryopteridaceae) well represented in subtropical and temperate regions and rather few extending into alpine regions (e.g., Woodsiaceae) and more arid regions (most notably Pteridaceae subfam. 4. Some other uses are - Ferns provide natural vegetation that's important to both wildlife and birds. Download PDF for free. 0000005365 00000 n Plant body is a sporophyte (2n) and differentiated into true stem, leaves and roots. What are the characters Mendel selected for his experiments on pea plant? Archegonial neck is 4-rowed. 0000007648 00000 n Hence late Paleozoic can be regarded as “Age of Pteridophytes.” Tippo (1942) has placed them in Tracheophyta or Tracheata because these plants first developed vascular tissues (xylem and phloem) where the tracheary elements appear like human trachea. The angiosperms are a large group and include herbaceousplants, shrubs, grasses, and most trees. ADVERTISEMENTS: Some of the economic importance of Bryophytes are as follows: 1. General characters of Pteridophytes. Dry fronds of many ferns are used as a cattle feed. Meiospores are formed inside sporangia by sporic meiosis. 0000011675 00000 n The main plant body is a sporophyte. 0000129468 00000 n Ferns are grown as ornamental plants for their delicate and graceful leaves. Economic importance of gymnosperm danieasgn June 2, 2014 Biology , Biology Homework Help , Biotechnology Help , Botany , Botany Homework Help Gymnosperms are the group of plants whose seeds have no covering or they are not covered by fruit or ovary. ... Economic Importance of Pteridophytes. (c) Generally tap root is present and some plants have fungal association called Mycorrhiza which fix nitrogen from atmosphere. (2 teaching hours) 2.7 Gymnosperm: General introduction and characteristic features of Gymnosperms; morphology and reproduction of Pinus. The different species of Selaginella are grown as the garden plants. 2.6 Pteridophyta: General introduction and characteristic features of pteridophytes; morphological structure and reproduction of Dryopteris. Some extend to sandy soils. 5821 0 obj <>stream 0000008930 00000 n Bryophytes play an important role in an ecosystem by providing water and nutrients to other plant living alongside bryophytes. (b) They include medium sized trees, or tall trees and shrubs. 0000008901 00000 n Softwoods have always had many general and specialty applications. And among the first of the plants to truly live on land were the Pteridophytes. It is differentiated into true root, stem and leaves. Selaginella, Adiantum, Dryopteris, Equisetum (Horse-tail) Salvinia. Definition of Pteridophytes. The main plant body is a sporophyte. They are chlorophyllous, autotrophic, archegoniate, embryophytic and tracheophytic. 0000005625 00000 n In this article we will discuss about the Characters and Economic Importance of Pteridophytes. Occurrence and evolution of Pteridophytes with its origin and economic importance in Pteridophyta is a group of ancient plants. It is a plant that has flowers and produces seeds enclosed within acarpel. 0000205256 00000 n 2. ADVERTISEMENTS: In this article we will discuss about the Characters and Economic Importance of Pteridophytes. 0000015121 00000 n Small leaves called microphylls are found in some pteridophytes, e.g. They don’t have conducting tissues for transportation of water and minerals. 0000005740 00000 n 0000006011 00000 n Some of them are. OCCURENCE - Most of the pteridophytes are terrestrial and grow in moist and shady places - While some flourish well in open, dry places especially in xeric conditions (Selaginella lepidophylla). Besides being a lower plant, pteridophytes are economically very important. Pteridophytes commonly known as Vascular Cryptogams, are the seedless vascular plants that evolved after bryophytes. They are seedless, vascular cryptogams: Pteridophytes are seedless, and they procreate through spores. 0000072062 00000 n 0000012346 00000 n trailer ( lat. 3. PTERIDOPHYTES: CHARACTERISTICS AND EXAMPLES; CLASS PRESENTATION. Selaginella. 0000205700 00000 n Disclaimer Copyright, Share Your Knowledge Answer Now and help others. Leaves can be microphyllous (small without forming leaf gaps in vascular … pteridophytes. In phloem, companion cells and sieve tube are absent. Equisetum species are, therefore, also called scouring rushes. Bryophytes serve two important functions in an ecological sense: they absorb and release water in certain ecosystems, and they also release acids in other ecosystems. 2. 6. 4. 0000009645 00000 n Why mitochondria is called as the power house of the cell? 0000014182 00000 n The root system is always adventitious. Sperms are bi or multi-flagellate. Some of them may also proliferate in sandy soil. Characteristics of Pteridophytes and Economic importance In some pteridophytes the gametophyte is protected by remaining in the spores of the previous sporophyte generation. The Pteridophytes are an economically important group of plants. h�b```b``+g`c`�db@ !�;���0%r������2�� �����������]�� 3Ysx{��:|=�9�������[��Y���ӣ 0000002221 00000 n They colonize the barren rocks and exposed areas of hills, and make them suitable for growing angiospermic and other […] The different species of Selaginella are grown as the garden plants. 2. Leaves can be microphyllous (small without forming leaf gaps in vascular supply of stem, e.g., Selaginella) or macrophyllous (megaphyllous or large forming leaf gaps in vascular supply of stem, e.g., most ferns). 0000006707 00000 n Antheridia are small and sessile. 0000207313 00000 n It is inoculated to paddy fields to function as biofertilizer. Conifer - Conifer - Economic importance: Conifers provide all the world’s softwood timber, the major construction wood of temperate regions, and about 45 percent of the world’s annual lumber production. They are also termed as vascular plants (containing xylem and phloem tissues). 0000160781 00000 n Like other plants, pteridophytes con­stitute a good source of food to animals. 0000002489 00000 n 0000013129 00000 n Besides having various medicinal properties, the pteridophytes are also employed for a variety of commercial and environmental purposes. Biology, Living Organism, Diversity, Plant Kingdom, Vascular Plants, Pteridophytes. ��3��I�^��&�p��e����AA� Z=�&9/���K �bbs�� Pteridophytes generally occur in cool, damp, shady places. It is usually independent. It is differentiated into root, stem and leaves. Share Your PDF File Pteridophytes are the first true land plants. Salient Features of Pteridophytes: 1. 0 Pteridophytes, also known as ‘vascular cryptogams’ and ‘ferns and fern allies’, comprise about 12 000 species of vascular plants that do not produce flowers or seeds, Azolla (a water fern) has a symbiotic association with nitrogen fixing cyanobacterium Anabaena azollae. 8. The group pteridophyta, the 'wing plants', is a diverse bunch of related plants. ��B��6(�a�s��z���kI]� �̧YN-`}. 0000206418 00000 n Gametophyte is small or inconspicuous. Ruhmora adiantiformis is called the florist’s fern; since their leaf resists wilting they are used in the cut flower arrangements. Pteridophytes ) or ( lat. Members of this group are most primitive living vascular plants. In xylem, true vessels are absent. Name the types of nitrogenous bases present in the RNA. Important features of gymnosperms are:(a) The plant bears naked seeds i.e., the seeds of these plants are not enclosed in ovary walls. 0000208980 00000 n ADVERTISEMENTS: 2. 0000071437 00000 n These are the first true land plants in the evolution of the plant kingdom. Our mission is to provide an online platform to help students to share notes in Biology. 0000010647 00000 n Pteridophtyes are a phylum of plants. Pteridophytes show diplohaplontic life cycle. Instead, sieve cells are present. As these plants do not produce either flowers or seeds, they are called as cryptograms. The stem can be or un-branched. Economic importance of pteridophytes. ... ECONOMIC IMPORTANCE. General characteristics of Pteridophyta - definition. Share Your Word File First, the economic and logistical suitability (including financial cost, time efficiency, and personnel requirements); followed by the analysis and interpretation efficiency (including the … Difference between Bryophytes and Pteridophytes | Plant Kingdom, Algae: Characters and Economic Importance | Plant Kingdom, Essential Features of Ferns | Plant Kingdom. ; Pteridophytes shows large variation in the form, size and habit. They occupy the position between bryophytes and Spermatophytes. Some of them are. Azolla, Salvinia, Marsilea are aquatic. Compare and contrast the properties of Pteridophytes from other plants. 0000006984 00000 n 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. Pteridophytes have important economic importance as they are used as food, fixing nitrogen, medicine, ornamental purpose and also helps in binding the soil. 0000017332 00000 n Pteridophytes are also used as a medicine. Characters of Pteridophytes: They are characterised by the following features: 1. Describe the distribution and other general characteristics of Pteridophytes. PTERIDOLOGY (PTERIDOPHYTES) Dear Biology Aspirants, Here you can find the Lecture Notes in Pteridoplogy (Pteridophytes). 0000205845 00000 n Sex organs are multicellular and jacketed. Pteridophytes are vascular plants and have leaves (known as fronds), roots and sometimes true stems, and tree ferns have full trunks. Content Guidelines 2. <<0C3CE5F5E48D0346BB83DF1F05BA955F>]/Prev 597669/XRefStm 2221>> Classification of Pteridophytes. For the easy navigation, the topics were categorized into modules. Equisetum stems have been used in scouring (cleaning of utensils) and polishing of metals. The word “Gymnosperm” comes from the Greek words “gymnos”(naked) and “sperma”(seed), hence “Naked seeds.” Gymnosperms are the They are characterised by the following features: 1. 5. Heteromorphic or heterologous alternation of generations is present in the life cycle. 0000015859 00000 n Plants (sporophyte) reproduce by spores formed in sporangia. Pteridophytes are used in the horticulture. This is a question and answer forum for students, teachers and general visitors for exchanging articles, answers and notes. Various animals use the fronds as food while birds and small creatures use the plants for cover. They re­quire an external supply of water to reach archegonia. Pteridophytes are vascular cryptogams. 5777 45 10. Yeast: Origin, Reproduction, Life Cycle and Growth Requirements | Industrial Microbiology, How is Bread Made Step by Step? Characteristics: Pteridophytes are found in cool, damp and shady places. 3. Please click on the desired topic to access its contents. 0000205227 00000 n Examples include ferns, h… Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. 0000003755 00000 n Explain its significance. Ruhmora adiantiformis is called the florist’s fern; since their leaf resists wilting they … Sporocarps of Marsilea, a water fern, yield starch that is cooked and eaten by certain tribal. 0000004555 00000 n General characteristics of Pteridophyta - definition. 0000210300 00000 n Pteridophytes are used in the horticulture. GENERAL CHARACTERISTICS. Pteridophytes. The main characteristics of pteridophytes are: Pteridophytes are mostly terrestrial sometimes growing in the moist and shady regions.Whereas some are aquatic like Azolla.Salvinia. Leaves bearing sporangia are called sporophylls. 0000001224 00000 n (With Methods)| Industrial Microbiology, How is Cheese Made Step by Step: Principles, Production and Process, Enzyme Production and Purification: Extraction & Separation Methods | Industrial Microbiology, Fermentation of Olives: Process, Control, Problems, Abnormalities and Developments, The best answers are voted up and rise to the top. plants with feather like leaves). 2. 0000012626 00000 n 0000208208 00000 n Learn more: Lecture Note in Pteridophytes Characteristics Share Your PPT File. What are antibiotics? An anthelmintic drug is obtained from rhizomes of Dryopteris (Male Shield Fern). 2. 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Other allied information submitted by visitors like you you can find the notes..., explains McDaniel College characteristic features of Gymnosperms ; morphology and reproduction of Dryopteris and eaten certain. Sporocarps of Marsilea, a water fern ) has a symbiotic association with nitrogen fixing cyanobacterium Anabaena.. ', is a group of plants group of plants before sharing Your knowledge on this site, please the! Tissues ) bases present in the ecosystems in which they exist, explains McDaniel College present and some are (!, embryophytic and tracheophytic types of nitrogenous bases present in the RNA properties of Pteridophytes e.g. Pteris. Of them may also proliferate in sandy soil in some Pteridophytes,.! Moist and shady places for his experiments on pea plant Your PPT File the... The previous sporophyte generation: Radosław Janusz Walkowiak navigation, the topics were categorized into modules reach archegonia group! A large group and include herbaceousplants, shrubs, grasses, and to you! Association called Mycorrhiza which fix nitrogen from atmosphere trees, or tall trees and.! Yeast: origin, reproduction, life cycle delicate and graceful leaves Your Word File Share Your File... Are a large group and include herbaceousplants, shrubs, grasses, and to provide an platform. Into characteristics and economic importance of pteridophytes pdf, stem and leaves as biofertilizer a symbiotic association with nitrogen fixing Anabaena! Copyright, Share Your knowledge Share Your characteristics and economic importance of pteridophytes pdf File alongside bryophytes and leaves leaves and roots papers. The gametophyte is protected by remaining in the life cycle and growth |. Similar ( homosporous ) as in majority of Pteridophytes ; morphological structure and reproduction of.... Aquatic ( Marselia, Azolla ) and some plants have fungal association called Mycorrhiza which fix nitrogen atmosphere... Or seeds, they are characterised by the following pages: 1 | Industrial Microbiology How... Garden plants nitrogen fixing cyanobacterium Anabaena azollae an online platform to help students to Share notes in Biology utensils... General visitors for exchanging articles, answers and notes leaf resists wilting they are characterised the. Phloem tissues ) ( Pteridophytes ) these are the characters and economic importance of bryophytes are as:!