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ICSE Board Exam 2012 : Biology

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rohit_k
Sandeepani Vidyanikethan, Kuttumukku, Thrissur
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BIOLOGY SCIENCE Paper 3 (One hour and a half) 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 respiratory pigment found in erythrocytes. (ii) The organ that produces urea. (iii) The part of the chloroplast where the light reaction of photosynthesis takes place. (iv) (v) (b) A solution whose concentration is greater than that of the cell sap. The part of the ovary that produces progesterone. [5] State whether the following statements are true or false. If false, rewrite the correct form of the statement by changing the first word only: (i) Cones are photoreceptor cells that are sensitive to dim light. (ii) The Beta cells of the pancreas secrete insulin. (iii) Tubectomy is the surgical method of sterilization in man. (iv) Guttation is the loss of water in the form of water droplets from hydathodes. (v) (c) Nephrons are the basic unit of the brain. [5] Give technical terms for the following: (i) Plasma devoid of fibrinogen. 67 ICSE Specimen Question Paper www.examrace.com

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