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ISC Class XII Board Exam 2019 : Biology Paper 1 (Theory)

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ISC 12th
Indian School Certificate Examination (ISC), New Delhi

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BIOLOGY PAPER 1 (THEORY) (Maximum Marks: 70) (Time allowed: Three hours) (Candidates are allowed additional 15 minutes for only reading the paper. They must NOT start writing during this time.) --------------------------------------------------------------------------------------------------------------------This paper comprises TWO PARTS Part I and Part II. Answer all questions. Part I consists of one question of 20 marks having five subparts. Part II consists of Sections A, B and C. Section A consists of seven questions of two marks each. Section B consists of seven questions of three marks each, and Section C consists of three questions of five marks each. Internal choices have been provided in two questions in Section A, two questions in Section B and in all three questions of Section C. The intended marks for questions or parts of questions are given in brackets [ ]. --------------------------------------------------------------------------------------------------------------------PART I (20 Marks) Answer all questions. Question 1 (a) Answer the following questions briefly and to the point: (i) Name the antibody which is most effective in allergies. (ii) What is the function of GEAC ? (iii) What is a clone? (iv) What do detritus food chains begin with? (v) Give the full form of EFB. (vi) How many chromosomes are present in meiocytes of a fruit fly? (vii) Name the common ancestor of apes and man. (viii) Give the scientific term used for the preservation of germplasm at a very low temperature. ------------------------------------------------------------------------------------------------------------------This Paper consists of 5 printed pages and 1 blank page. 1219-863A Copyright reserved. Turn over [8 1]

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