Answer: Option B Question No. Decomposers themselves are organisms (often fungi, earthworms, or bacteria) that breakdown organic materials to gain nutrients and energy. Multiple-Choice Questions (multiple answers are possible: a & c or a, c, and d) or Fill-in the Blank, and Short Answers 1. “Decomposition is the process by which the complex organic substances breakdown into simpler substances by the action of microorganisms.” What is Decomposition? Carbon has a unique property of catenation due to which it forms C-C covalent bond leading to long carbon straight-chain and branched-chain compounds. Answer: (c) minerals, organic matter, air and water Q2(MCQ): The water holding capacity is the highest in (a) Sandy soil (b) clayey soil (c) loamy soil ... Humus is the organic matter present in the soil formed by the decomposition of dead plant and animal remains. A. Imhoff tanks. ... How poor nitrogen content causes slow rate of decomposition? SURVEY . Organic manure contains a few nutrients. Multiple Choice Questions for Energy Resources - Chapter 21 Each chapter will include a few questions designed to test your knowledge of material covered in the chapter and in the Internet-based resources. Your email address will not be published. Question 4. C. Algae Determining the taxonomy of bacteria is challenged by a number of factors. MULTIPLE CHOICE QUESTIONS ON CHEMISTRY PRACTICALS 1. It enhances the water holding capacity of soil. This makes more water available to plants. Students can solve NCERT Class 12 Biology Ecosystem MCQs Pdf with Answers to know their preparation level. Free PDF Download of CBSE Biology Multiple Choice Questions for Class 12 with Answers Chapter 14 Ecosystem. Organic matter also decomposes faster when soil is well aerated (higher oxygen levels) and much slower on saturated wet soils (refer to soil respiration guide Figure 2 for more information). PLEASE COMMENT BELOW WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION. As the decomposition precedes, the C: N ratio of the organic materials decreases with the loss of carbon and conservation of nitrogen. 30 seconds . a)Process of decomposition of organic matter to ammonia b)Process of decomposition of organic matter to nitriles c)Process of decomposition of inorganic matter to ammonia d)All of the above. Soil Science Soil Science Mcqs for Preparation of FPSC, KPPSC, PPSC , SPSC, BPSC, NTS OTS ETEA and other tests. A. Actinomycetes Contents: Sources of Soil Organic Matter Composition of Organic Residues Decomposition of Organic Compounds in Soil Factors Affecting the Rate of Decomposition Role of Organic […] Those marked by a "+" are particularly challenging and may require you to understand and integrate concepts and information from several parts of the textbook. It is only a question of time until their percentage rate of disappearance from the soil … Major useful product obtained from microbes (A) Vitamin (B) Single cell protein (C) Antibiotic (D) All […] We have provided Environmental Chemistry Class 11 Chemistry MCQs Questions with Answers to help students understand the concept very well. B. Decomposition 4. Required fields are marked *. The sewage treatment units in which anaerobic decomposition of organic matter is used, are called. Students can solve these Crop Production and Management Class 8 MCQs Questions with Answers and assess their … Submitted by: Shafiq Rehman. Students are advised to practice the NCERT MCQ Questions for Class 8 Science Chapter 1 Crop Production and Management with Answers Pdf free download is available here. MCQ Questions for Class 8 Science: Ch 18 Pollution of Air and Water. D. None of these. Maintenance. Fungi C. Algae D. None of the above. 10. It has high organic matter content and helps return to the soil many properties that are lost over time and with use. autolysis. Which one is not an organic waste? MCQ Questions for Class 12 Biology: Ch 14 Ecosystem. Role 6. It typically corresponds to the disintegration or rupture of complex organic matter into a simpler inorganic matter. Decomposers act on dead bodies converting complex organic constituents into simple soluble form. 10. Try the following. C. Fungi MCQ Questions for Class 8 Science with Answers are prepared as per the Latest Exam Pattern. During decomposition of organic matter, inititial decomposition is dominated by:_____? For each question, choose the one best answer. 7 Pick up the correct statement from the following: (A) In treated sewage, 4 ppm of D.O. "A Level … They also boost the decomposition of active soil, the portion of soil that is still in the process of decomposing. Tags: Question 8 . Composition of Organic Residues 3. B. 6. A. Actinomycetes B. ADVERTISEMENTS: In this article we will discuss about:- 1. PLEASE COMMENT BELOW WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION. During decomposition of organic matter, inititial decomposition is dominated by:_____? MCQ Questions for Class 11 Chemistry with Answers were prepared based on the latest exam pattern. death. PLEASE COMMENT BELOW WITH CORRECT ANSWER AND ITS DETAIL EXPLANATION. It has a balance of all plant nutrients. As the decay process proceeds, both carbon and nitrogen are now subject to loss as CO 2 and nitrates respectively. Your email address will not be published. Organic matter decomposes faster in climates that are warm and humid and slower in cool, dry climates. Sources of Soil Organic Matter 2. putrefaction. A Level Chemistry Multiple Choice Questions and Answers (MCQs): Quizzes & Practice Tests with Answer Key (A Level Chemistry Quick Study Guide & Course Review) contains course review tests for competitive exams to solve 1750 MCQs. 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