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xii biology sample paper

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Krishna Patil
K. V. Pendharkar College, Dombivli

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PRANJAL GROUP TUITIONS XI & XII SCI. / JEE(Main) / MH-CET / AIPMT 2014-15 XII SCI: BIOLOGY - I PRELIMINARY EXAM-1 Time: 1: 30 Hrs. Max Marks: 35 Note: i. ii. iii. iv. v. vi. Answers to Section-I and Section-II should be written in Two Separate answer books. Questions from Section-I attempted in the answer book of Section-II and vice-versa will not be assessed / not given any credit. All questions are compulsory. Draw neat and labelled diagram wherever necessary. Figures to the right indicate full marks. Answer to every new question must begin on a new page. SECTION- I Q.1. Select and write the most appropriate answer from the given [7] alternatives for each sub-question. i) Removal of large pieces of floating debris, oily substances, etc. during sewage treatment is called ____. a) primary treatment c) final treatment ii) b) secondary treatment d) amplification In a Mendelian cross, 45 tall and 14 dwarf Pea plants were obtained. Genotype of parents was ______. iii) The horizontal distribution of trees is studied in _____. a) scarification b) stratification c) zonation d) speciation iv) Cloning can be done in vitro, via _____. a) Polymerase Chain Reaction c) Transposons v) b) Gel Electrophoresis d) Lambda phage DNA strand which is formed continuously in 5 3 direction is called ____. a) lagging strand c) template strand vi) b) leading strand d) Okazaki fragment Vincristin , a secondary metabolite is obtained from the plant ___. a) Catharanthus roseus c) Daucus carota vii) b) Asparagus racemosus d) Datura stramoneum In dark reaction, the first compound to accept CO2 is ______. a) RuMP Q.2. b) RuBP c) PGAL Answer in One sentence each. i) 2014-15 (A) d) PGA What is Golden rice? XI & XII SCI. / JEE (Main) / MH-CET / AIPMT [6] PRANJAL GROUP TUITIONS 1

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