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Class 12 ISC Prelims 2018 : Biology (Bishop Moore Vidyapith (BMVM), Mavelikara, Alappuzha)

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Abel Samuel
Bishop Moore Vidyapith (BMVM), Mavelikara, Alappuzha
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BISHOP MOORE VIDYAPITH, MAVELIKARA SECOND MODEL EXAMINATION 2017-18 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 of TWO PARTS Part I and Part II. Answer all questions. Part I contains twenty questions of one mark each. Part II consists of Section A, B & C. Section A contains seven questions of two marks each Section B contains seven questions of three marks each, and Section C contains 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. ---------------------------------------------------------------------------------------------------------------PART I (20 Marks) Answer all questions. Question 1 (a) Answer the following questions briefly and to the point: (i) Name the part of an angiosperm flower in which development of male gametophyte takes place. (ii) State the role of C-peptide in human insulin. (iii) Name the parts of the pistil which develops into fruits and seeds. (iv) Why are spores of Bacillus thuringiensis used as bio-insecticide? (v) When and how does implantation occur in human beings? (vi) Define population explosion. (vii) Name the source of erythromycin and gentamycin. (viii) Why is fertilization in flowering plants known as double fertilization? (b) Each of the following questions has four choices. Choose the best option in each case: (i) Which one is an edaphic factor in biosphere? (1) Light (2) Temperature (3) Soil (4) Water ISC BIOLOGY SECOND MODEL EXAMINATION 2017-18 [8 1] [4 1] Page 1

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