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ICSE Class X Prelims 2021 : Biology (Progressive Education (II) School, Indore) : Pre-board

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Pyush Parmar
Progressive Education (II) School, Indore
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PROGRESSIVE EDUCATION SCHOOL th Grade 10 Biology Paper-III Marks 80 SECTION I (40 Marks) Attempt all questions from this Section Question 1 A. Name the following: [5] (i). The hormone that regulates the basal metabolic rate. (ii). The part of the internal ear related to the static balance of the body. (iii). The soluble protein in blood plasma responsible for blood clotting. (iv). A plant having sunken stomata. (v). The uptake of mineral ions against the concentration gradient. B. State whether the following statements are true or false. If false, rewrite the correct form of the statement by changing the first word only: [5] (i). Cones are photoreceptor cells that are sensitive to dim light. (ii) The Beta cells of the pancreas secrete insulin. (iii). Plasmolysis makes the cell turgid. (iv). Guttation is the loss of water in the form of water droplets from hydathodes. (v). Nephrons are the basic unit of the brain. C. The following paragraph is related to absorption of water from the soil. Complete the following [5] paragraph by selecting the correct word from those given below. You may use a term only once. Exostosis, Hypertonic, Osmosis, Isotonic, Hypotonic, Cortical, Endosmosis, Phloem. Water enters the root hair from the soil by the process of....................(i). This is because the solution in the soil is ............................. (ii) whereas the cell sap in the root hair cell is .................... (iii) The water then passes through the.............................(iv) cells by cell to cell ......................... (v) and reaches the xylem of the root.

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