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VIBGYOR HIGH Second Preliminary Examination 2020-2021 BIOLOGY SCIENCE Paper - 3 Grade: X Max. Marks : 80 Date : 15/01/2021 Time Allowed: 2 hours INSTRUCTIONS: 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 [ ]. This Paper consists of 10 Printed pages. SECTION I (40 marks) Attempt all questions from this Section. Question 1 (a) Name the following: [5] (i) The part of the brain that carries impulses from one hemisphere of cerebellum to the other hemisphere. (ii) The antiseptic substance present in tears. (iii) A chemical substance used to test the presence of starch in a leaf. (iv) The compound formed when haemoglobin combines with carbon dioxide in the blood. (v) The openings on the stem through which transpiration occurs. (b) Expand the following biological abbreviations: (i) ATP (ii) TSH 1 [5]
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