Google prodeuses female onaphaleses9/26/2023 Spirogyra and Chlamydomonas are some examples of algae.Ħ. They are also known as precursors of plants. They are the only microorganisms that are multicellular and have photosynthetic pigments. HIV virus in humans and TMV virus in plants are examples of viruses. It can affect plants as well as animals or humans. Viruses are disease-causing microorganisms that can only divide inside a host organism/cell. They are harmful to humans as well as other organisms. Protozoa can either be unicellular or multicellular.Īmoeba and Plasmodium are examples of protozoa. The moulds formed on bread are a type of fungi. It causes diseases like cholera and tuberculosis.įungi are mostly multicellular organisms that cause several diseases. They can be spiral, rod-shaped, spherical-shaped, comma-shaped. What are the major groups of microorganisms?Īns: There are five major groups of microorganisms. But microorganisms can be seen through a microscope.ĥ. Can microorganisms be seen with the naked eye? If not, how can they be seen?Īns: No, microorganisms cannot be seen with the naked eye as they are minute organisms. ![]() The yeast cells are microorganisms that grow, respire and release carbon dioxide, which is responsible for raising and baking bread.Ī protozoan is a microorganism carried by female anopheles mosquitoes which causes malaria.Ĥ. Lactobacillus produces lactic acid by converting sugar that coagulates and partially digest the milk protein and giving rise to curd. ![]() Rhizobium is a bacteria that is useful in the fixation of atmospheric nitrogen in the soil. Match the organisms in column I with their action in column II.īacteria is a microorganism that causes a disease called cholera. The fermentation process involves the conversion of sugar into alcohol.ģ. The process of conversion of sugar into alcohol is called The yeast cells are microorganisms that grow, respire, and release carbon dioxide, which is responsible for raising the bread or idli dough.į. The most common carrier of communicable diseases isĪnt, dragonflies, and spiders do not carry any diseases.Į. The carrier of Malaria-causing protozoan isįemale Anopheles mosquito carries Malaria-causing protozoan which causes Malaria in humans.ĭ. Streptomycin is an antibiotic, sodium bicarbonate is an antacid, alcohol is a drug, and yeast is a fungus.Ĭ. Yeast is used in the production of alcohol, which converts sugar into ethanol and carbon dioxide.ī. Blue-Green Algae fix _ directly from the air to enhance the fertility of the soil.Ĭ. Microorganisms can be seen with the help of a _.ī. The microbes residing in such legumes are involved in nitrogen fixation.Ī. Leguminous plants' root nodules are home to a variety of microorganisms. Some microbes can cause diseases that are called pathogens.ĭysentery and malaria are two devastating diseases caused by protozoa.Ī vaccination is a biological preparation that delivers disease-specific active acquired immunity. Some microbes clean up the environment by decomposing organic waste and dead plants and animals into simple compounds. Some microbes can be used to make medications and alcohol commercially. Microbes are both harmful and helpful depending on their type. Viruses are acellular creatures that possess nucleic acid but cannot replicate without a host cell. Protozoa, bacteria, fungi, and algae are the classification of microbes. Microbes are tiny creatures that cannot be seen with naked eyes. Let us look at some important points that are discussed in the chapter. Key Points of Microorganisms Friend and Foe at a Glance The disease-causing microorganisms in animals The disease-causing microorganisms in plants The disease-causing microorganisms in humans ![]() Microbes' role in increasing soil fertility Introduction to different types of microbes ![]() The following are the important topics that are discussed in Chapter 2 of the Class 8 Biology syllabus. Topics Covered in NCERT Solutions Class 8 Science Chapter 2 These solutions are specifically aimed to help students develop a better understanding of the topic.ĭownload the NCERT Solutions for Class 8 Science Chapter 2 and ace your upcoming examinations! Also, the solutions are curated by expert educators with step-wise solutions. The NCERT Solutions pdf provided by Vedantu consists of all the key topics mentioned above. Viruses and vaccinations are also discussed in the chapter. Protozoa, Bacteria, Fungi, and Algae dominate Chapter 2 of Class 8 Science. Vedantu is a publicly available NCERT solution pdf created by professionals that covers all of the chapters' important concepts, NCERT questions, and activities. Vedantu goes over the NCERT answers for Class 8 Science Chapter 2 in depth.
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