Que. (ii) Economic importance of Bacteria. Canal system, and affinities of Porifera. (12 lec.) Flatworms are … Porifera Life Cycle. Article Shared by. For example, they live in water, in moist surface of soil, in air and even as commensals and parasites in animals and plants. There are many sponge species in which each sponge is considered male and female. Distribution, types and formation of corals and coral reefs. 5) Ecological and economical importance of Porifera is that it is in all aquatic habitats, microbial sumbionts, and creates habitats for other organisms, sponge beds are also “hotspots” for diversity. Since Ctenophora reproduce quickly and are good predators, they can easily bring down an ecosystem where they have no predators. J. N. A. Hooper and R. W. M. van Soest (2002). Coral and dinoflagellate symbiosis and coral bleaching. (7 lec.) We cannot deny the fact that sponges are somewhat a threat to oyster industry because they grown on oyster shells covering its surface and thus preventing the oyster from getting food and as a result oyster dies. ECONOMIC IMPORTANCE OF EARTHWORM. Their tunnels act as water storage, which is important when rain is scarce. The economic is that they can absorb water and filter shit, Medicine. Ask your question! Economic importance of bryophytes. Earthworms are of great economic importance to man. The harmful molluscs are slugs and shipworms. fi iodeeeaoe or fl deeeaoe or ff eeeaoe fj eeeaoe ©FAO 2017 I7775EN/1/09.17 All photos courtesy of DFO, Canada One remarkable feature is the filtration capacity of sponges. Protozoan - Protozoan - Ecological and industrial importance of protozoans: Protozoans play important roles in the fertility of soils. 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. 4 (i) Identify and give its nature of damage. 52-90 4 Phylum Coelentrata: General Characters, Classification up to order. Coelenterata: Structure, reproduction and development of Obelia. "Class Demospongiae Sollas, 1885". These are harvested by divers and can also be grown commercially. 3 Phylum Porifera: General Characters, Classification up to order.Sycon with Special reference to structure, Reproduction and development. Wiki User Answered . Economic Importance of Phylum Molluscs. e. By means of stamen character only, how will you differentiate the various families which are included in your syllabus. Economic importance of Porifera. In this article we will discuss about various economic importance of protozoa. Mark B answered on January 03, 2012. The creator of the series was a marine biologist who was fascinated with the ocean and used many marine animals in his cartoon. The most economically important group of demospongians to human are the bath sponges. Ascaris Lumbericoides: It is an intestinal parasite of man. Slugs are injurious in gardens and cultivations, they not only eat the leaves but also destroy plants by cutting up their roots and stems. Aurelia with special reference to structure, reproduction, development & Polymorphism. Related Questions. Polymorphism. Coelenterata: Habit, habitat, structure, reproduction and development of Obelia. The Black Sea, located in the Middle East. Edible Molluscs: (i) Edible Oysters: From ancient times the Romans and Greeks used the oysters as a main dish in their meals. Flatworms have been an important part of biological communities since well before any animals emerged on land. Answer. Distribution, types and formation of corals and coral reefs. They play an important role in agriculture and are the best friends of farmers as they are continuously ploughing and manuring the soil. Do you need an answer to a question different from the above? SPONGES 2. 11 Importance of Sponges. This enhances the rates at which bacteria decompose dead organic matter. Canal system and affinities. They are sedentary and sessile except the free swimming, larval form. 2012-10-12 01:06:17 2012-10-12 01:06:17. Next Previous. Phylum porifera 1. 6. The Red Indians were great oyster eaters. Coral and dinoflagellate symbiosis and coral bleaching.
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