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ICSE Class X Prelims 2021 : Biology (K. E. Carmel School, Amtala)

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16 Koustav Singh
K. E. Carmel School, Amtala

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10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS K.E.CARMEL C.M.I GROUP OF SCHOOLS Subject: Biology Full Marks: 40 Time: 1 hour koustavsinghofficial2006@gmail.com Switch accounts Draft saved *Required Email * koustavsinghofficial2006@gmail.com Name of the student * Koustav Singh Class * X Roll Number * 16 Section I (15 marks) https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 1/18 10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS Question 1 Name the following by choosing the correct option:- [5] i) An indicator of moisture during transpiration is Iodine Cobalt chloride Soda lime Methylated spirit Clear selection ii) Free movement of molecules from higher to lower concentration when in direct contact is called Imbibition Osmosis Active transport Diffusion Clear selection https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 2/18 10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS iii) The hydrostatic pressure developed in the root is called Wall pressure Root pressure Osmotic pressure Plasmolysis Clear selection iv) Stage of photosynthesis which is biosynthetic in nature Light independent stage Photolysis light reaction Photophosphorylation Clear selection v) The histone core with DNA wrapped around it is called a Centrosome Nucleotide Chromosome Nucleosome Clear selection https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 3/18 10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS Question 2 Complete the following statements by choosing the appropriate option for each blank : [5] i) When a plasmolysed cell is placed in water it ___________. Enlarges Shrinks Remains unchanged Bursts Clear selection ii) The process of splitting of water by sunlight during light reaction of photosynthesis is called _______. Phosphorylation Photolysis dark phase Transpiration Clear selection https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 4/18 10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS iii) Sunken stomata are found in _______________. Croton Nerium Banyan Tomato Clear selection iv)_________________reduces the rate of transpiration. High temperature High wind velocity High Humidity Bright sunlight Clear selection v) During Meoisis the chromosome number in the daughter cells becomes ________________. Doubled Halved Same Tripled Clear selection https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 5/18 10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS Question 3 Choose the correct answer from the following options given below : [5] i) The PHENOTYPIC ratio in the f2 generation of dihybrid cross is 3:1 1:2:1 9:3:3:1 No ratio,all have same phenotype Clear selection ii) Chlorophyll occurs in the Stroma Grana Stoma Frets Clear selection https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 6/18 10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS iii) Relative concentrations of two solutions that determines direction of diffusion is called Osmotic pressure Turgidity Flaccidity Tonicity Clear selection iv) Who among the following is termed as the father of Genetics. Darwin Mendel Watson and Crick Lamarck Clear selection v) A sudden change in a gene or a chromosome is called Chiasma formation Variation Crossing over Mutation Clear selection https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 7/18 10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS Section II (15 marks) Question 4 Explain the following terms : [5] i) Bleeding is Loss of water from injured plant part Loss of water from margin of leaves Loss of water from stomata Loss of plant sap from injured part Clear selection ii) Photophosphorylation is Splitting of water molecules using light Formation of ATP using energy from sunlight Breakdown of ATP to release energy Conversion of NADP to NADPH Clear selection https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 8/18 10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS iii) Plasmolysis is The shrinkage of the cell contents due to hypotonic solution outside Shrinkage of cell contents due to hypertonic solution outside Swelling of cell contents due to hypotonic solution outside Shrinkage of the vacuole due to hypotonic solution outside Clear selection iv) Anaphase is a stage where Sister chromatids move to the opposite poles Chromatids thin out as chromatin fibres Chromosomes become distinct Chromosomes arrange on equatorial plane Option 5 Clear selection v) The law of independent assortment applies to Monohybrid cross Sex linked inheritance Dihybrid cross Mutations and variations Clear selection https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 9/18 10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS Question 5 State the exact location of the following : [5] i) Triple hydrogen bond is found between A and G T and G T and A G and C Clear selection ii) Chiasma occurs between Non sister chromatids of homologous chromosomes Sister chromatids of homologous chromosomes Two paternal chromosomes Two maternal chromosomes Clear selection https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 10/18 10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS iii) Root hairs are extensions of Epithelial cells Endodermal cells Epidermal cells Cortical cells Clear selection iv) Active transport of mineral salts occurs between Cortex to xylem Cytoplasm to vacuole Root hairs to soil water Soil water to root hairs Clear selection v) Hydathodes are found on Old woody stems Under surface of leaf Margins of leaf Epidermis of root Clear selection https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 11/18 10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS Question 6 State the function of the following :- [5] i) Ganongs potometer measures Unequal rates of transpiration from two leaf surfaces Rate of water output Suction force due to transpiration Rate of water intake which is almost equal to water lost by transpiration Clear selection ii) Iodine is used to test Presence of glucose Presence of starch Presence of water vapour Presence of impurities Clear selection https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 12/18 10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS iii) Allosomes determine General body features External characteristics Gender of an organism Variations Clear selection iv) Mitosis helps in Gamete formation Repair of tissues Variations in off springs Reproduction in higher organisms Clear selection v) Imbibition helps in Movement of leaves of mimosa Germination of seeds Killing bacteria Turgor movement Clear selection Section III (10 marks) https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 13/18 10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS Question 7 Given below is the diagram of a cell as seen under the microscope after having been placed in a certain solution. Answer the questions that follow : [5] i) The state of the cell is Turgid cell Plasmolysed cell Deplasmolysed cell Neutral cell Clear selection https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 14/18 10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS ii) What was the tonicity of the solution in which the cell was placed before it reached this state ? Hypotonic solution Isotonic solution Hypertonic solution Neutral solution Clear selection iii) The process that has taken place is Endosmosis Exosmosis Diffusion Active transport Clear selection iv) The parts numbered 1 to 4 in the diagram is Nucleus, plastid, vacuole, hypotonic solution Nucleolus , golgi complex , ribosome , isotonic solution Peroxisome , cytoplasm, vacuole, neutral solution Nucleus , chloroplast, vacuole, hypertonic solution Clear selection https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 15/18 10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS v) Cell sap is The cytoplasm of a cell The fluid in the vacuole The fluid that leaks out during exosmosis The fluid in the xylem vessels Clear selection Question 8 The diagram given below represents a stage during cell division. Study the same and answer the questions that follow : [5] https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 16/18 10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS i) Identify the type of cell Plant cell Animal cell Bacterial cell Protozoan cell Clear selection ii) Name the stage depicted in the figure Prophase Metaphase Anaphase Telophase Clear selection iii) A cell has five pairs of chromosomes. After mitotic division , the number of chromosomes in the daughter cells will be Forty Twenty Ten Five Clear selection https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 17/18 10/27/21, 9:43 AM K.E.CARMEL C.M.I GROUP OF SCHOOLS iv) Which of the following is present in animal cells only Mitochondria Chromosomes Cell membrane Centrosome Clear selection v) Cell plate grows from Centre to wall One wall to another Wall to centre Wall to spindle Clear selection Submit Clear form Never submit passwords through Google Forms. This content is neither created nor endorsed by Google. Report Abuse - Terms of Service - Privacy Policy Forms https://docs.google.com/forms/d/e/1FAIpQLScoE-cwk8LX6sBRWWwpuvOLguIPy6nKfOHwo8pAzLIadzczxQ/viewform 18/18

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