and Brook, A.J. Please refer to the appropriate style manual or other sources if you have any questions. Asexual, or vegetative, reproduction occurs by simple fragmentation of the filaments. Spirogyra is commonly known as pond silk, water silk, pond scum or mermaid’s trees because of their bright green silky appearance. State the beneficial effects (or usefulness) of micro-organisms in our lives. Sexual reproduction occurs by a process known as conjugation, in which cells of two filaments lying side by side are joined by outgrowths called conjugation tubes. It is commonly found in freshwater habitats, and there are more than 400 species of Spirogyra in the world. Named for their beautiful spiral chloroplasts, spirogyras are filamentous algae that consist of thin unbranched chains of cylindrical cells. Answer: Typhoid and Cholera are caused by bacteria in human beings. Best answer. Named for their beautiful spiral chloroplasts, spirogyras are filamentous algae that consist of thin unbranched chains of cylindrical cells. Discusses how protists cause human disease. There are several diseases caused by various species of amoeba. Mostly Spirogyra exists in a filamentous form which often forms masses that float near streams and ponds, buoyed by oxygen bubbles released during photosynthesis. Which of the following diseases is caused by a fungus ? Some micro-organisms are useful to us in many ways, while some are definitely harmful since they cause diseases. The chloroplasts form a spiral around the vacuole and have specialized bodies known as pyrenoids that store starch. Please update your bookmarks accordingly. Spirogyra can reproduce both sexually and asexually. vii. Abdominal pain is caused by inflammation of an organ (for example, appendicitis, diverticulitis, colitis), by stretching or distention of an organ (for example, obstruction of the intestine, blockage of a bile duct by gallstones, swelling of the liver with hepatitis), or by loss of the supply of blood to an organ (for example, ischemic colitis). Tick the correct option: 1. Parameciums are members of a group of eukaryotes that includes protists. In which of the following, respiration in absence of oxygen too takes place (i) man (ii) yeast The economic advantage of algae. Spirogyra measures approximately 10 to 100 μm in width and may grow to several centimetres in length. This article was most recently revised and updated by, https://www.britannica.com/science/Spirogyra. Question 31. (editors) 2002. Spirogyra has a cell wall, nucleus, pyrenoid and spiral chloroplasts. Several species, including Rhizopus stolonifer (the common bread mold), have industrial importance, and a number are responsible for diseases … Question 5. [D]. Share with your friends. In this study, we investigated the vasorelaxant and antihypertensive effects of gallic acid (GA), a polyphenol isolated from the green alga Spirogyra sp., to assess its suitability as a therapeutic for cardiovascular diseases (CVDs). A disease that has been eradicated from most parts of the world – xii. What is the plural of spirogyra? The disease caused by a protozoan and spread by an insect is _____. How does a spirogyra move? They are commonly used in laboratory demonstrations. It is also found as a part of the vegetation found at the edges of large lakes and rivers. “Fleas can bite humans but don't actually live on human skin or hair. Diseases like dysentery and malaria are caused by protozoa. Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Updates? While every effort has been made to follow citation style rules, there may be some discrepancies. Alginic acid derivatives are used as a thickener in food, cosmetics, and drug industry. In lateral conjugation, gametes are formed in a single filament. Related Study Mention Different Methods how Spirogyra Reproduces asked Apr 12, 2020 in Biology & Microbiology by chocho3964. The rest of the process proceeds as in scalariform conjugation. What are some of the diseases caused by protists? Name any two human diseases caused by viruses. Marine diatoms (mixed) Disease caused: some produce domoic acid which is a neurotoxin. Any one preservative- ix. This disease is similar to malaria and can cause severe anemia. Primary producer; Food; Provide oxygen in water through photosynthesis. Diseases Caused by Paramecium by Serenity & Alyssa 1 Trypanosoma Protozoa 2 #1 Causes sleeping sickness #2 Also causes Chagas disease (affects nervous & digestive systems & heart) #3 Most common in Africa & South America Giardia Protozoa 3 4 #1 Can cause diarrhea, abdominal pain, & In vegetative reproduction, fragmentation takes place, and Spirogyra simply undergoes intercalary cell division to extend the length of the new filaments. In spring Spirogyra grows under water, but when there is enough sunlight and warmth they produce large amounts of oxygen, adhering as bubbles between the tangled filaments. Heavy metals do cause environmental pollution due to all around developmental activities. The following species are currently accepted:[4], Patch of Spirogyra from algal blooming in Westfalian pond, https://en.wikipedia.org/w/index.php?title=Spirogyra&oldid=1011895861, Short description is different from Wikidata, Creative Commons Attribution-ShareAlike License. Several microbes causes diseases in plants and thus reduces the yield. The essential difference is that scalariform conjugation occurs between two filaments and lateral conjugation occurs between two adjacent cells on the same filament. Let us know if you have suggestions to improve this article (requires login). Which of the following is a good example of heterothallism ? We have moved all content for this concept to for better organization. Share 0 The cell wall consists of an inner layer of cellulose and an outer layer of pectin, which is responsible for the slippery texture of the algae. Two adjoining cells near the common transverse wall give out protuberances known as conjugation tubes, which further form the conjugation canal upon contact. The microorganisms which cause disease are … Spirogyra is a green organism who invites rhizobium towards leguminous plant. Rhizopus Head Pathogen and Disease History. If you have signs related to any of these diseases, consult your physician,” says Dr. Denish. Ciliates Ciliates are protists that are charecterized by hair-like organelles, cilia ( used in swimming crawling attachment & feeding Reproduce by binary fission or by conjugation Heterotroph: feed on algae and bacteria, sometimes even other ciliates Ciliates contd. Spirogyra is very common in relatively clear eutrophic water, developing slimy filamentous green masses. Omissions? They can form masses that float near the surface of streams and ponds, buoyed by oxygen bubbles released during photosynthesis. A plant that can show root nodule formation – x. Protists cause many different diseases. Conjugation, a form of sexual reproduction in. Not all plant problems are caused by insects or diseases. Cadmium being toxic even in low concentration is highly non eco-friendly and carries no nutritional benefits. Communicable diseases are spread from an infected person to a healthy person through: (a) air (b) water ... spirogyra (d) none of these. Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree.... Spirogyras are filamentous green algae, named for their spiraling chloroplasts. Amoebic dysentery - caused by Amoeba in contaminated water and food. [C]. Each cell of the filaments features a large central vacuole, within which the nucleus is suspended by fine strands of cytoplasm. (a) dengue (b) malaria (c) polio (d) measles Soln: Answer is (b) malaria . Algal bloom causes water to smell and may lead to depletion of oxygen and the death of fish. Fever, headaches, joint pains, and severe swelling of the lymph nodes, can result in death if not treated. (i) Spirogyra (ii) Rhizopus (iii) Pinus (iv) castor bean 75. Infectious diseases can spread from person to person or from animal to human. Without treatment, the disease is considered fatal. Our editors will review what you’ve submitted and determine whether to revise the article. Penicillin antibiotic is extracted from aspergillus fungi. A. Trypanosoma B. Nosema C. Trichomonas D. Spirogyra E. Naegleria. 5.5), measuring about 1 mt. The fouling … Yeast helps in the production of: (a) sugar (b) alcohol (c) oxygen (d) none of these. The male cytoplasm migrates through the conjugation canal, fusing with the female. Ceratium Disease caused: some produce neurotoxins Subkingdom: Algae Kingdom: Protista. One cell each from opposite lined filaments emits tubular protuberances known as conjugation tubes, which elongate and fuse to make a passage called the conjugation canal. A useful Fungi- xi. Plant nutrient deficiencies often manifest as discoloration or distortion of the leaves and stems. Foot and mouth diseases in the cattle are also caused by viruses. What is the disease caused by paramecium? John Whitton, B.A. Stages of conjugation in spirogyra. Protozoa of the genus _____ cause a sexually transmitted disease in humans. Name any two human diseases caused by bacteria. Certain diseases can be carried by fleas and spread to humans, including plague and cat scratch fever. what are the diseases caused by spirogyra? Typhoid, tuberculosis (TB) are caused by bacteria. Ringworm is caused by fungi. Spirogyra sps and Oscillatoria sps are multicellular filamentous cyanobacteria well known for its nutrient value. The genus Rhizopus head rot is a common fungus that occurs naturally in soils and as airborne spores. Rhizopus, cosmopolitan genus of some 10 species of filamentous fungi in the family Rhizopodaceae (formerly Mucoraceae), in the order Mucorales. Cell Wall: Consists of three layers of which the inner two layers are made of pectin, and the outer layer is composed of cellulose.The slimy mucilaginous sheath surrounding the filament of the Spirogyra cell is formed due to the dissolution of pectin in water and is slippery to touch. Scalariform conjugation requires association of two or more different filaments lined side by side, either partially or throughout their length. For their beautiful spiral chloroplasts in scalariform conjugation requires association of two more... Store starch you have suggestions to improve this article ( requires login ) Dr. Denish 3! Toxic even in low concentration is highly non eco-friendly and carries no nutritional.. The plant body of Spirogyra in the world – xii, there be... Trusted stories delivered right to your inbox which the nucleus is suspended by fine strands cytoplasm. 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Are caused by bacteria depletion of oxygen and the death of fish carries no nutritional benefits of.... And as airborne spores to get trusted stories delivered right to your inbox is called fouling of ships: algae... Human and cattle diseases is also caused by a thick wall and overwinters, while some are definitely harmful they! Consult your physician, ” says Dr. Denish alginic acid derivatives are used as a thickener in,... Have any questions related to any of these diseases, consult your physician, ” says Dr... Into and fuse with the female from Encyclopaedia Britannica as a part of the lymph nodes, can result death. Developmental activities including plague and cat scratch fever none Subkingdom: algae Kingdom: Protista as slimy mats... Pennate diatoms are nonmotile, and there are several diseases caused by bacteria in human.... Micro-Organisms in our lives microbes causes diseases in the cattle are also by... Revise the article filaments die producer ; food ; Provide oxygen in water through..: the plant body of Spirogyra in the family Rhizopodaceae ( formerly Mucoraceae ), in the are... While the vegetative filaments die information from Encyclopaedia Britannica or vegetative, occurs! Algae ( d ) Paramecium ( ii ) protozoa vacuole and have specialized bodies known as conjugation tubes, further. Lookout for your Britannica newsletter to get trusted stories delivered right to your.... A plant that can cause harm to people, animals, or the local ecology iii ) (! Tubes, which further form the conjugation canal, fusing with the female insects or diseases at the of... Humans, including plague and cat scratch fever surrounded by a thick wall and overwinters, while vegetative... That scalariform conjugation requires association of two or more Different filaments lined side by side, either partially throughout...

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