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HIMACHAL PRADESH MAR 2008 : Biology

4 pages, 41 questions, 1 questions with responses, 1 total responses,

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BIOLOGY (Theory) Time Allowed : 3 Hrs. Max. Marks 60 Special Instructions :1. You must write question paper series in the circle at top left side of title page of your Answer-book. 2. While answering your question, you must indicate on your answer book same question No. as appears in your question paper. 3. Do not leave blank page / pages in your Answer-book. 4. All the questions are compulsory and are divided into four sections. 5. Answers should be to the point. 6. Que No. 1 to 5 (Section-A) are of one mark each and are of MCQ type. 7. Que No. 6 to 15 (Section-B) are of 1 marks each. Answer each of them in 30-40 words. 8. Que No. 16 to 23 (Section-C) are of 2 marks each. Answer each of them in about 80 words. 9. Que No. 24 & 25 (Section-C) are of 3 marks each. Answer each of them in about 120 words. 10. Que No. 26 (Section-D) is of 4 marks. Answer in about 140 words. 11. Que No. 27 & 28 are of 5 marks each. Answer in about 150-170 words. 12. Draw diagrams wherever necessary. Section-A Q1. Cllistogamous flower are (a) Male flower which never opens (b) female flower which never opens (c) Bisexual flower which never opens (d) Open bisexual flower which perform self pollination in bud condition. (1) Q2. An 'O' blood group child can not have parents of blood group (a) B and B (b) A and B (c) O and O (d) AB and O Q3. Single cell protein (SCP) represents (a) Protein extracted from a micro-organism (b) (c) Protein mass from single cell animal (d) (26) (1) Protein from a clone of cells Biomass from growth of a micro-organism (1) Q4. Addition of foregin gene in to a crop is (a) Genitic Engineering (b) (c) Tissue culture (d) Biotechnology Immunisation (1) Q5. Pyramid of number deals with (a) Species in an area (c) Individual in a trophic level Individuals in a Community Sub species in a Community (1) (b) (d) Section-B Q6. What is Colostrum ? What are its main functions ? OR What are Leydig cells ? What is their function ? (1 ) Q7. How is a sickle cell carrier at an advantage over the rest of human population in a malaria ridden area ? (1 ) Q8. What are transgenic bacteria ? Illustrate using one example. OR Explain principle and function of ELISA. (1 ) Q9. Briefly describe Predator food chain. (1 ) Q10. Define : (a) Dominant trait. (b) OR Write one function of each. (a) Promotor gene (b) Recessive trait (c) Homozygous t RNA (c) Exons Q11. What is triple fussion ? What is its significance ? (1 ) (1 ) Q12. Microbes can be used to decrease the use of chemical fertilizer and pesticides ? Explain how this can be accomplished ? (1 ) Q13. Define the following terms : (a) Biopatent (b) Biopiracy (c) Genitically modified food (1 ) Q14. Outline salient features of Carbon Cycle in nature. (1 ) Q15. What is gene therapy ? (1 ) (27) Section-C Q16. What is aminocentesis ? What is its significance ? (2 ) Q17. What are Homologous organs ? Explain with examples. (2 ) Q18. What are biofertilzer, explain ? (2 ) Q19. Define : (a) Scavenging (d) Predation (b) Commensalism (e) Proto co-operation (c) Symbiosis OR Write one example for each of the following : (a) Heliophyte (b) Viviparous plant (d) Ectothermic animals (e) Sciophyle (c) Edothermic animals (2 ) Q20. What is biotechnology ? How does old biotechnology differs from modern biotechnology ? (2 ) Q21. Define Mendal's law of Independent assortment. Explain with suitable example. OR Write the application of Recombinant DNA technology. (2 ) Q22. Differentiate between spermatogensis and oogensis. (2 ) Q23. Describe hot spots of biodiversity with species reference to India. (2 ) Q24. Descibe an inducible operon with example and differentiate from repressible operon. (3) Q25. What do you understand by acid rain ? What are its effects on the vegitation ? (3) Section-D Q26. What is Atavisim also write the name of atleast four vestigeal organ present in human body. OR Describe Darwin Theory of 'Natural Selection'. (4) Q27. (a) (b) Write expanded forms of : (1) AMIS (2) CMIS (3) NACO List any four danger signals of Cancer. OR (28) (a) (b) Q28. (a) (b) (c) Name and explain briefly any three types of Cancer. Differentiate between antibodies and interferons. (3+2) Recapitulation theory was proposed by (1) Van Bear (2) Darwin (3) Haeckel (4) Aristotle Draw labelled L.S. of angiospermic ovule. What are Cry Protein ? Name the organism that produces them. (1+2+2) (29)

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Additional Info : Model Question Papers Of Plus Two Examination March 2008 Biology (Theory)
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