1) Out of the following, which one is the most common type of transpiration? a. Foliar b. Stomatal c. Lenticular d. Cuticular
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2) The rate of transpiration will greatly depend upon: a. Frequency of stomata b. Position of stomata c. State of stomata d. None of the above
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3) Photochemical reactions of photosynthesis take place in: a. Frets b. Stroma c. Thylakoids d. All of these
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4) If fermentation is allowed to proceed in a closed vessel: a. Gas pressure will develop because of excess of oxygen b. Gas pressure will develop because of excess of carbon dioxide c. Vacuum will be created d. No change will take place
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5) In submerged leaves respiration takes place through: a. General surface of the leaf b. Stomata present on dorsal surface of the leaf c. Stomata present on ventral surface of leaf d. Stomata present on both surfaces of the leaf
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6) Cytoklnins were first discovered in 1913 by Gottlieb Haberlandt in: a. Germany b. Holland c. Poland d. Austria
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7) Which of the following is indispensable in cell culture? a. Gibberellins b. Kinetin c. Ethylene d. Auxin
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8) Plants hormone, which is translocated to other parts for growth of the plant as: a. Gibberellins b. Cytokinin c. Indole acetic acid d. None of the above
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9) Which of the following is capable of delaying yellowing of leaves? a. Gibberellins b. Cytokinins c. ABA d. Auxins
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10) Which of the following is an essential part of photosynthesis? a. Glycolysis b. Photorespiration c. Photorespiration d. Photolysis
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11) Hydroponics is: a. Growing of plants in water culture b. Growing of aquatic plants c. Growing of floating aquatic plants d. Soil less cultivation of plants
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12) The end product of fermentation is: a. H2O and CO2 b. C2H5OH and CO2 c. CO2 is converted in photosynthesis to carbohydrates d. Pyruvic acid and H2O
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13) Most plants obtain their nitrogen from the soil in the form of: a. HNO3 b. Nitrate c. Free nitrogen d. Nitrogen oxide
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14) The optically hyaline portion of the protoplasm is called as: a. Hyaloplasm b. Cytoplasm c. Mesoplasm d. Endoplasm
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15) Which of the following elements can land plants, normally obtain directly from the air? a. Hydrogen b. Phosphorus c. Nitrogen d. Carbon
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16) Which of the following is not naturally occurring plant hormone? a. IAA b. GA2 c. 2, 4-D d. Gibberallins
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17) One of the following causes rootings in cuttings: a. IBA b. 2, 4-D c. GA3 d. ABA
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18) When a seed is placed in a suitable medium for germination, by which of the following first process water enter into the seed coat? a. Imbibition b. Absorption c. Osmosis d. Root pressure
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19) Plasma membrane is: a. Impermeable b. A selective barrier c. A non-selective barrier d. Made of up cellulose
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20) The efforts to enhance partition of assimilates to storage organs of interest to farmers have quite successful due to: a. Improved component technology b. Improved control of insect c. Better disease control d. Better breeding techniques
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21) Gibberellic acid has been successfully employed to induce flowering: a. In long day points under short day conditions b. In short day plants under long day conditions c. For some plants d. None of the above
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22) The prokaryota are a group of organisms: a. In which cells are a group of organisms b. In which nuclear membrance, nucleolus and chromosomal matrix are lacking c. In which chlorophyll is lacking d. With a wall defined nucleus
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23) Which one of the following will reduce the rate of transpiration? a. Increase in windy velocity b. Rise in temperature c. Increase in water uptake by plants d. Decrease in light intensity
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24) The total volume of water on melting: a. Increases b. Remains constant c. Decreases d. None of these
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25) Gibberellins are now commercially used ______ into increase sugarcane growth and sugar yields: a. Pakistan b. Hawaii c. Japan d. Korea
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26) It hypothetical chemical involved in the flowering of plant is: a. Indole acetic acid b. Florigen c. Gibberellin d. Kinetin
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27) Anaerobic respiration is also known as: a. Intra-molecular respirtion b. Inter-molecular respiration c. Extra-molecular respiration d. Molecular respirtion
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28) Which of the following is not a part of chlorophyll? a. Iron b. Nitrogen c. Carbon d. Hydrogen
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29) Wilting of leaves in hot weather is due to: a. Iron and calcium b. Sodium and copper c. Calcium and potassium d. Iron and magnesium Fe, Mg
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30) A micro-essential element is one which: a. Is less important than the major essential element b. Is more important than the major essential element c. Is present in small quantities in the soil d. Is needed in very small amounts but is as important as a major essential element
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31) Rotation of crops is practised in plants because: a. It decreases the nitrogen content of the soil b. It increases the nitrogen content of the soil c. It kills harmful bacteria of the soil d. It increases the water content of the soil
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32) It is advantageous to the Hydrilla to demonstrate photosynthesis than land plant because: a. It respires slowly b. It does not transpire c. It photosynthesizes rapidly d. Oxygen bubbles can be collected over water
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33) If you place a piece of tomato in concentrated solution: a. It would become limp due to loss of water from its cells b. It would become turgid due to absorption of water from salt solution c. It would die d. The plant is rapidly respiring
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34) When a piece of potato tuber is placed in concentrated salt solution: a. It would become turgid by absorbing water from salt solution b. It would become limp (shrink) due to loss of water from its solution c. It would die d. Nothing would happen
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35) According to the fluid mosaic model the correct sequence of plasmalemma is: a. L,-P,L,-P b. L,-P-P,-L c. P,-L,-L,P d. P,-P,-L,-L
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36) In the process of respiration in plants 180 gms. of sugar plus 192 gms. of oxygen produce: a. Large amount of CO2, no water and no energy b. 132 gm, of CO2, 54 gms, of water and 337 kilo cals of energy c. 264 gms. of CO2, 108 gms. of water and 674 kilo cals. of energy d. 528 gms. of CO2,216 gms. of water and 1348 kilo cals. of energy
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37) Leaves with yellow or colourless patches are termed as: a. Lecorine b. Decolourized c. Etiolated d. Variegated
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38) Oxygen evolved in photosynthesis is: a. Less than CO2 consumed b. More than CO2 consumed c. Equal to CO2 consumed d. None of these
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39) The dry weight of a green leaf will be: a. Lesser in evening b. Greater in the afternoon c. Greater in morning d. Almost same throughout the whole day
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40) Etiolated plants are formed due to lack of: a. Light b. Hg c. Fe d. Mg
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41) For photosynthesis (i.e. for the synthesis of organic matter) the green plants need only: a. Light b. Chlorophyll c. CO2 and water d. All of these
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42) Growth is primarily affected by two climatic factors, which are: a. Light and temperature b. Temperature and relative humidity c. Light and wind d. Rainfall and temperature
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43) For the purpose of photosynthesis all except one of the following items are essential, point out the exception: a. Light, chlorophyLL b. Oxygen, sucrose c. CO2, optimum temperature d. Water, minerals
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44) One of the following is not found in intact cells: a. Lomasomes b. Dictyosomes c. Microsomes d. Ribosomes
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45) A plant, which needs not less than 10 hours of light to flower, is: a. Long day plant b. Short day plant c. Day neutral plant d. None of these
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46) If cells are broken up and sedimented by centrifugation the new structure formed in one of the fractions is: a. Lysosome b. Ribosome c. Mecrosome d. Centrosome
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47) Which of the following element is concerned with the photolysis of water? a. Magnesium b. Manganese c. Calcium d. Zinc
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48) Which one of the following elements is not required by plants for their normal healthy growth? a. Magnesium b. Lead c. Iron d. Calcium
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49) The framework elements of plants are: a. Magnesium, Copper and Iron b. Copper, Carbon and Iron c. Copper, Carbon and Oxygen d. Manganese, Calcium and nitrogen
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50) Fertilizers have formula consisting of three figures such as 8-10-10. These figures stand for percentage of: a. Magnesium, iron, potassium b. Calcium, iron, born c. Nitrogen, phosphorous, Potassium d. Magnesium, manganese, sulphur
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51) Anaerobic respiration was first of all reported by: a. Maguenne b. Kostychev c. Klein d. Pfeffer
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52) The provision of light of shorter wavelength at the same time, as longer red wavelength photosynthesis. a. Maintains b. Enhances c. Reduces d. No efect
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53) Probably the most useful measurable property in the soil-plnt-air system is: a. Matric poterntal b. Water potential c. Osmotic potential d. Redox potential
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54) Every living cell has a: a. Membrane b. Food vacuole c. Chloroplast d. Cell wall
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55) Cytochrome oxidase contains: a. Mg b. Fe c. Hg d. Co
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56) The figures of cork cells as seen by Robert Hooke were published in this book: a. Micrographia b. Origin of species c. Plank kingdom d. Genera plantarum
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57) Proteins are synthesized on: a. Mitochondria b. Centrosome c. Golgi bodies d. Ribosomes
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