Botany

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Botany

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Botany gate 2018

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Botany Match the plant alkaloids with their uses and source species.
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Botany Select the CORRECT combination by matching Group-I with Group-II.
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Botany : Match the fruit characters with their families and representative plant species. Fruit character Family Plant species P. Syconus 1. Moraceae i. Canavalia ensiformis Q. Capsule, opening by apical pores or valves 2. Fabaceae ii. Artabotrys odoratissimus R. Legume 3. Papaveraceae iii. Ficus religiosa S. An etaerio of drupe 4. Annonaceae iv. Papaver somniferum v. Pistacia vera vi. Citrus aurantium
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Botany : Select the CORRECT combination by matching the disease, affected plant and the causal organism.
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Botany Two true-breeding snapdragon (Antirrhinum majus) plants, one with red flowers and another with white flowers were crossed. The F1 plants were all with pink flowers. When the F1 plants were selfed, they produced three kinds of F2 plants with red, pink and white flowers in a 1:2:1 ratio. The probability that out of the five plants picked up randomly, two would be with pink flowers, two with white flowers and one with red flowers is _____%.
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Botany Identify the CORRECT combination of statements with respect to chemical defense in plants. P. Pisatin, a phytoalexin produced byBotany : Ricinus communis is a constitutive defense compound Q. Phaseolus vulgaris produces Phaseolus agglutinin I, which is toxic to the cowpea weevil R. A single step non-enzymatic hydrolysis of cyanogenic glycoside releases the toxic hydrocyanic acid (HCN) to protect plant against herbivores and pathogens S. Avenacin, a triterpenoid saponin from oat prevents infection by Gaeumannomyces graminis, a major pathogen of cereal roots
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Botany : Select the CORRECT combination of the following statements. P. The cyclic electron transport chain involving PSI results in net production of both ATP and NADPH Q. The cyclic electron transport chain involving PSI results in net production of ATP R. Rubisco enzyme usually converts RuBP and CO2 into 2-phosphoglycolate and 3-phosphoglycerate S. Rubisco enzyme usually converts RuBP and O2 into 2-phosphoglycolate and 3-phosphoglycerate
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Botany : Statements given below are either TRUE (T) or FALSE (F). Select the CORRECT combination. P. Mitosis occurs exclusively in diploid mother cell Q. Mitosis occurs both in diploid and haploid mother cells R. Meiosis occurs exclusively in diploid mother cell S. Meiosis occurs both in diploid and haploid mother cells
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Botany In garden pea, dwarf plants with terminal flowers are recessive to tall plants with axial flowers. A true-breeding tall plant with axial flowers was crossed with a true-breeding dwarf plant with terminal flowers. The resulting F1 plants were testcrossed, and the following progeny were obtained: Tall plants with axial flowers = 320 Dwarf plants with terminal flowers = 318 Tall plants with terminal flowers = 79 Dwarf plants with axial flowers = 83
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