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ICSE Class X Prelims 2025 : Biology (Indian Education Society IES Orion, Mumbai)

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Shreyan Singh
Indian Education Society IES Orion, Mumbai

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INDIAN EDUCATION SOCIETY Orion (1CSE)Secondary IES (2024-25) VALUE ADDITION THROVON EDUCATION PRE-PRELIMINARY EXAMINATION Marks: 80 Date: 12/12/2024 Std: X Subject: BIOLOGY Time: 2 hours separately. the paper provided on written be must paper Answer tothis duringthe first 15 minutes. You will not be allowed to write the question paper. Thistime is to be spent in reading allowed for writing the answers time the is paper this of head The time given at the II. and anyfour questionsfrom PART []. brackets Attempt all questions from PARTIparts in of questions are given intended marks for questions or The This paper consists of 8 printed pages. PART I(40Marks) (Attempt allquestions) (Do the questions from the given options. Question 1 Select the correct answer to the correct answer only) () [15] not copy the question. Write attached to spindle fibres by their: At Metaphase, chromosomes are Centromeres b) Satellites c) Secondary constrictions d) Kinetochores (i) normal visioned man, their sons will be If a colorblind woman marries a a) All normal visioned b) One-half colourblind and one-half normal normal c) Three-fourths colourblind and one-fourth d Allcolourblind (ii) What occurs duringaeplasmolysis? 1) Water leaves the cellcausing shrinkage. 2) Water enters the cell causing it to swell. 3) The cell wall collapses. 4) The protoplasm detaches from the cell wall. a) Statements 1) and 2) correct b) 1), 2) and 3) correct e Only 2) correct d) Only 1) correct Page 1 of 8

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