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ICSE Prelims 2019 : Biology (Don Bosco Senior Secondary School, Vaduthala, Kochi, Ernakulam)

6 pages, 95 questions, 87 questions with responses, 100 total responses,    0    0
Tiara Elizabeth
Indian Certificate of Secondary Education (ICSE), New Delhi
10th
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BIOLOGY SCIENCE Paper 3 (Tow hours) Answers to this Paper must be written on the paper provided separately. You will not be allowed to write during the first 15 minutes. This time is to be spent in reading the Question Paper. The time given at the head of this Paper is the time allowed for writing the answers. Attempt all questions from Section I and any four questions from Section II. The intended marks for questions or parts of questions are given in brackets [ ]. SECTION I (40 Marks) Attempt all questions from this Section Question 1 (a) Name the following: (i) The stage when chromosomes arrange at the equator. (ii) Shrinking of protoplasm when a cell is kept in a hypertonic solution. (iii) The minute blood vessels that join arteries and veins. (iv) The type of gene, which in the presence of a contrasting allele is not expressed. (v) The excretory product formed by liver. (b) State whether the following statements are true or false. If false, rewrite the correct form of the statement by changing the first word or last word only: (i) (ii) (iii) (iv) (v) [5] Meiosis is the type of cell division occurring in the cells of injured parts of the body. Chromosomes other than the pair of sex chromosomes are called alleles. Pulmonary vein carries oxygenated blood. Raisins swell up when placed in a medium which is the hypertonic solution. Urea is formed in the kidney. (c) Choose the correct alternative from the choices given below each statement so as to complete its meaning: (i) G1, S and G2 are phases present in a) Prophase b) Interphase c) Metaphase d) Telophase (ii) [5] A plant cell may burst when: a) Turgor pressure equalise wall pressure 1 ICSE (Grade : X) | BIOLOGY (SCIENCE Paper-3) | Pre Board Exam-1 [5]

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