Protozoan - Protozoan - Ecological and industrial importance of protozoans: Protozoans play important roles in the fertility of soils. (c) Pteridophyta: characteristics; classification into classes: psilopsida (Psilotum), lycopsida (Selaginella, Lycopodium), sphenopsida (Equisetum) and pteropsida (Dryopteris, Pteris and Adiantum). chitra says: at 2:18 pm how we have to download. Have you seen SpongeBob Square Pants? Economical Importance of Sponges •At one time there was a market for sponges to be used in the bathroom and the kitchen because of their ability to absorb water, however synthetic sponges have replaced this industry Sea sponge Skeleton to be used in the bathroom for washing 10 . Top Answer. Ecological/Economical Importance . admin says: at 10:58 pm hi, you can download any post in pdf format using the link provided at the end of each post. g. How does the carbon cycle exist in the nature? Economic importance of Porifera- (7 hrs.) 3 Ratings, (9 Votes) weeds are unwanted plants in human controlled settings and as such have no value.however in the correct... solution.pdf. Porifera, Coelenterata (Cnidaria), Platyhelminthes, Aschelminthes (Nemathelminthes), Annelida, ... Write economic importance of fungi. The harmful molluscs are slugs and shipworms. economic importance of hydra Jun 30 2011 10:46 AM. Earth worms are particularly important in agrarian economics. Polymorphism. (12 hrs.) Related Questions. Read along to find more interesting bits of scientific information about Porifera. Sponges can also compete for food and space to the detriment of other sessile coral reef organisms. (a) Find out the effect of neem extract on mosquito larvae or on given pest. Introduction Porifera (po-rif -er-a) (L. porus, pore, fera, bearing) Most primitive of all animals Among the approximately 15,000 sponge species are mostly marine; a few exist in brackish water, and some 150 species live in freshwater Sessile; Draws food and water into its body Figure 1. Economic importance. Slugs are injurious in gardens and cultivations, they not only eat the leaves but also destroy plants by cutting up their roots and stems. (iii) Identify and describe the beak or feet. The economic is that they can absorb water and filter shit, Medicine. They house over 4,000 species of fish, 800 species of hard corals and hundreds of other species. SNAIL Rhabditis: This genus contains many species. Canal System in Sponges2. They play important functional roles in coral reef ecosystems and several species show commercial potential for use as biomaterials. 52-90 4 Phylum Coelentrata: General Characters, Classification up to order. Economic importance. The infamous tapeworm is another very specialized form of parasitic flatworm. Porifera has been derived from 2 Greek words. Economic importance of bryophytes. Que. Their tunnels act as water storage, which is important when rain is scarce. Protozoa includes acellular microscopic animals which have occupied almost all possible ecological habitats on the earth. 5 thoughts on “ What is economic importance of protozoa ” muddy says: at 5:12 pm it is good but it will be better if you can allow for we students to download free you material.thanks good day. Some growth habits and forms Do you need an answer to a question different from the above? Coelenterata: Aurelia with reference to structure, reproduction and development. Any fluke, including the human liver and lung flukes, is a type of flatworm. Ascaris Lumbericoides: It is an intestinal parasite of man. 1 Approved Answer . Distribution, types and formation of corals and coral reefs. Explain. Scientists estimate that there may be another 1 to 8 million undiscovered species of organisms living in and around reefs (Ocean Service Education) Coral also has a very big economical importance. Ecological role and potential economic value of sponges to the Torres Strait: Annual Report 2009 1 Summary Sponges are a key representative group throughout the coral reefs of Torres Strait. Flatworms have multiple parasitic forms that can be devastating for humans and other animals. Systema Porifera. 6 OR (a) Preparation of poisonous bait of rats. Animalia - non-chordates from Porifera to Echinodermata and Chordates - all five Classes. Earthworms in Agriculture: Earthworms make burrows and hence aerate the soil. These bacteria cause some very serious diseases in man and plants. e. By means of stamen character only, how will you differentiate the various families which are included in your syllabus. 6. Pest management. Economic importance of Coelenterates. Answer. Aurelia with special reference to structure, reproduction, development & Polymorphism. 11 Importance of Sponges. Corals have huge ecological importance. SPONGES 2. For example, they live in water, in moist surface of soil, in air and even as commensals and parasites in animals and plants. 5. Next Previous. Definition of homospory and heterospory with relevant examples. However, a few species of earthworms are harmful. Polymorphism. Animal Classification: Basis, Principles, Importance of Classification and Rules of Binomial Nomenclature Porifera : Characteristics and Classification Fish Fins: Types, Modification and Functions Coelenterata: Habit, habitat, structure, reproduction and development of Obelia. 2012-10-12 01:06:17 2012-10-12 01:06:17. Table of Content1. These are harvested by divers and can also be grown commercially. Keep reading. Economic importance of Porifera. The Red Indians were great oyster eaters. Flatworms have been an important part of biological communities since well before any animals emerged on land. (ii) Identify and give its economic importance. Wiki User Answered . 9 10 11. … Mollusca of Medical Importance [Snails] - Free download as Powerpoint Presentation (.ppt / .pptx), PDF File (.pdf), Text File (.txt) or view presentation slides online. Porifera (Sponges) Give the economic importance of sponges? They continually bring the lower soil … They are bleached and marketed; the spongin gives the sponge its softness. Distribution, types and formation of corals and coral reefs. Environmental Importance. ECONOMIC IMPORTANCE OF EARTHWORM. A brief account of Corals and Coral reefs. 3 Phylum Porifera: General Characters, Classification up to order.Sycon with Special reference to structure, Reproduction and development. They are found in soil, organic matter, water and feces of man and animals. They aerate the soil allow mositure to penetrate to plant roots. Economic Importance of Molluscs: Some Mollusca are indirectly harmful to man but most of them are beneficial.

economic importance of porifera pdf

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