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CBSE Class 11 Pre Board 2021 : Biology - Annual Final (CBSE Gulf Sahodaya Qatar Chapter, Doha)

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Annual Examination, 2020-2021 BIOLOGY Grade: 11 Date: 14.02.2021 Time: 3 Hours Max. Marks: 70 General Instructions: (i) All questions are compulsory. (ii) The question paper has four sections: Section A, Section B, Section C and Section D. There are 33 questions in the question paper. (iii) Section A has 14 questions of 1 mark each and 02 case-based questions. Section B has 9 questions of 2 marks each. Section C has 5 questions of 3 marks each and Section D has 3 questions of 5 marks each. (iv) There is no overall choice. However, internal choices have been provided in some questions. A student has to attempt only one of the alternatives in such questions. (v) Wherever necessary, neat and properly labeled diagrams should be drawn. Section A 1. Write the correct order sequence of taxonomical categories? [1] 2. Define metabolism. [1] 3. Name seedless vascular plants. [1] 4. Why are corals important? [1] 5. What is the Law of Limiting factor? [1] 6. Provide appropriate technical term in the space provided. [1] a. Blood-filled cavity in arthropods _________ b. Free-floating form of cnidaria _________ 7. Distinguish between Diabetes mellitus and Diabetes insipidus? [1] 8. How are prosthetic groups different from co-factors? [1] 9. Where dose mitosis takes place in plants and animals? [1] 1 of 7

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