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ISC Prelims 2016 : Biology (Sri Sri Academy (SSA), Kolkata)

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Sumit Roy
Sri Sri Academy (SSA), Kolkata

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SRI SRI ACADEMY CLASS XI (BIOLOGY) 1ST TERMINAL EXAMINATION SESSION 2015-2016 Time: 3 Hours 1. 2. 3. 4 Subject: - Biology Class: - XI Max Marks - 70 GENERAL INSTRUCTIONS: Candidates are allowed additional 15 minutes for only reading the paper. They must NOT start writing during this time Answer all questions in part - I and six questions in part - II; choosing two questions from each of the three sections:- Section A , Section B and Section C. All working including rough work; should be done on the same sheet as on adjacent to the rest of answer. The intended marks for questions or parts questions are given in brackets ( ) Part I (20 Marks) Answer all questions Question 1 (a) Give a brief answer for each of the following:(4) (i) What are Zwitterions? (ii) Why blood does not clot within the blood vessels? (iii) Name the causative agent of the disease Kala- Azar. (iv) Name the protein which is contained in Noctiluca that helps in bioluminescence. (b) State the significant differences between the following:(i) Haemoglobin and Leg Haemoglobin. (ii) Neurogenic Heart and Myogenic Heart. (iii) Nucleoside and Nucleotide. (iv) Mycorrhiza and Lichens. (4) (c) Rewrite the correct answer from the given alternatives: (i) The yellowing of the leaves is caused by the deficiency of:(A) Sodium (B) Potassium (C) Magnesium (D) Phosphorous (ii) Mature mammalian RBC does not have (4) P.T.O

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