Gauhati University Question Papers for Botany 4th Semester Pass Course
Gauhati University Question Papers for Botany 4th Semester Pass Course
Question Paper from 2010 available
More than 50 question papers every semester
Please check your syllabus before downloading the question paper.
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Paper 101
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2011
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2012
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2015
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2016
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More than 50 question papers every semester
Paper: E 401 (Theory)
(Plant Physiology and Biochemistry)
UNIT I: Plant water relations: Plant-water relations: Different bio-physio- Chemical phenomenon: definition, phenomenon and Importance of permeability, diffusion, osmosis, Plasmolysis, imbibition, Absorption of water-Introduction, mechanism of water absorption (Active and passive theories), Ascent of sap: Definition, mechanism- (root pressure theory, capillarity, Imbibitional and transpiration pull theories), Transpiration: Definition, types, structure of stomata. Mechanism of opening and
+
closing of stomata (Starch- sugar, K
(Potassium ion) pump theory)
UNIT II: Mineral nutrition: Essential macro and micro elements and their role in plants (deficiency, symptoms, disease and functions), Translocation of organic solutes: Introduction, direction of translocation, Mechanism: Mass flow or munch hypothesis, protoplasmic streaming theory
UNIT III: Plant metabolism: Photosynthesis: introduction, Ultra structure of chloroplast, photosynthetic pigments, concepts of two Photo systems, Light phase: cyclic and non cyclic photophoshorylation (z- scheme), Dark phase: calvin cycle (C3) Hatch and Slack cycle (C4) and crassulacean acid metabolism, significance of photosynthesis, Respiration: Intorduction, Types of respiration - Aerobic: Glycolysis, TCA cycle ETS (Oxidative phosphorylation) respiration
UNIT IV: Growth and Development: Growth and growth hormones: Phases of growth, factors affecting growth, Plant growth substances, hormones and their Practical applications; Seed dormancy: Introduction, methods
of breaking Seed Dormancy, factors affecting seed dormancy; Physiology of flowering: Photoperiodism (LD/SD/DN plants) Vernalization and Devernalization; Plants movements: Classification of movements, Movements of curvature. Movements of variation (paratonic –nastic)
UNIT V: Biochemistry: Elementary biochemistry: Introduction, different organic constituents of the cell, Functions of carbohydrates (mono /oligo / polysaccharides) starch, Cellulose, Hemicellulose, proteins and nucleic acids, lipid, alkaloids, gums, mucilage and organic acids; Nitrogen metabolism: Introduction, physical and biological nitrogen fixation, nitrogen in soil, ammonification and nitrification, denitrification; Enzymes: Introduction, nomenclature and classification, mechanism and mode of action. Concept of holoenzymes, apoenzymes, coenzymes and cofactors.
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