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GATE 2015 : Life Sciences [Section J]

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GATE 2015 BOTANY XL-J J : BOTANY Q. 1 Q. 10 carry one mark each. Q.1 Nuclear membrane is absent in (A) Chlamydomonas (B) Nostoc (C) Volvox (D) Chlorella Q.2 An organized and differentiated cell having cytoplasm but no nucleus is found in (A) Companion cell (B) Xylem parenchyma (C) Sieve tube element (D) Phloem parenchyma Q.3 Double haploids in plants can be induced by (A) Mitomycin-C (B) Mirin (C) Colchicine (D) 5-Azacytidine Q.4 During fatty acid biosynthesis, the first intermediate malonyl-CoA is formed from (A) Acetyl-CoA and bicarbonate (B) Two acetyl-CoA molecules (C) Acetyl-CoA and biotin (D) Palmitoyl CoA and acyl-carrier protein (ACP) Q.5 Which of the following techniques is NOT applicable for evaluating the expression of a transgene? (A) Northern blot (B) RT-PCR (C) Western blot (D) Southern blot Q.6 Identify the CORRECT family possessing the following characters: presence of glucosinolates, tetradynamous stamens, superior ovary with parietal placentation and siliqua type fruit (A) Brassicaceae (B) Capparidaceae (C) Fumariaceae (D) Papavaraceae Q.7 Which of the following reduces the transpiration rate when applied to aerial parts of plants? (A) Phosphon-D (B) Paraquat (C) Phenyl mercuric acetate (D) Valinomycin Q.8 A tube like membrane structure that forms the connection between the endoplasmic reticulum of neighboring cells through plasmodesmata is (A) Desmotubule XL-J (B) Desmosome (C) Dictyosome (D) Microtubule 1/4

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