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ISC Board Specimen 2014 : Biology Paper 2 (Practical)

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ISC 12th
Indian School Certificate Examination (ISC), New Delhi
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BIOLOGY PAPER - 2 (PRACTICAL) (Three hours) (Candidates are allowed additional 15 minutes for only reading the paper. They must OT start writing during this time.) -------------------------------------------------------------------------------------------------------------------------Answer all questions. All working including rough work should be done on the same sheet as the rest of the answer. The intended marks for questions or parts of questions are given in brackets [ ] ote: Q4 (Spotting) is to be attempted on a separate continuation sheet. The continuation sheet is to be handed over to the Supervising Examiner after the last observation. This continuation sheet should be attached to the main answer booklet of the candidate after the examination. -------------------------------------------------------------------------------------------------------------------------Question 1 [5] (a) Observe the given flower specimens D41 and D42 carefully. Describe the floral characteristics of each in semi-technical terms (Details of individual whorls are not required). (b) Cut a longitudinal section of each flower specimen with a sharp razor blade and show them to the Visiting Examiner. (c) Make a neat labelled diagram of one cut surface of specimen D42. (d) Observe the cut surfaces of each specimen and record the following features in a tabular form: (i) Androecium: (1) Relation of stamens to petals. (2) Relation to each other. (3) Number of stamens. 1 ISC Specimen Question Paper 2014

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