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1) Cooley’s anemia is another name used for___________? a. Leucemia b. Thalassaemia c. Sickle cell anemia d. None of these
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2) Which of the following are proteins in nature? a. Antibodies b. Interferons c. Antitoxins d. All of these
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3) Aerating openings formed in the bark through which exchange of gases takes place and water is lost in the form of vapours are___________? a. Hydathods b. Stomata c. Lenticels d. None of these
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4) Lenticels look like__________? a. A big pore b. Stoma c. Sponge d. Cars or small protusions
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5) Transport of minerals from soil to epidermal cells of roots via carrier protein molcules along their concentration gradient is called___________? a. Diffusion b. Facilitated diffusion c. Passive transport d. Active transport
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6) Pulling upward of water and dissolved minerals towards the leaves through the xylem tissue is called__________? a. Transpiration pull b. Root pressure c. Ascent of sap d. All of these
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7) A pressure created by active secretion of salts and other solutes from other cells into xylem sap is called___________? a. Transpiration pull b. Root pressure c. Osmotic pressure d. None of these
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8) Stomatal transpiration is __________ of total transpiration a. 90% b. 91% c. 93% d. 95%
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9) ___________ function as multisensory hydraulic valve? a. Lenticels b. Guard cells c. Hydathods d. All of these
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10) _________ give rise to macrophages, which destroy larger particles by phagocytosis. a. Nautrophils b. Basophila c. Monocyte d. Lymphocyte
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11) 95% of the cytoplasm of red blood cells is the___________? a. Antibodies b. Hemoglobin c. Enzymes d. Proteins
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12) Open circulatory system can contain_________? a. Red Blood Cells b. White Blood Cells c. Haemoglobin d. All of these
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13) Pressure flow theory was proposed by_________? a. H-Van Mohl b. Dixon c. Vander wall d. Earnst Munch
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14) The opening and closing of stomata is directly controlled by the___________? a. Temperature b. pH c. Light d. None of these
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15) There are _________ hypothesis which may explain opening and closing of stomata? a. One b. Two c. Three d. Four
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16) Low level of CO2 favours _________ of the stomata. a. Opening b. Closure c. Both of these d. None of these
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17) Symbionts which help plants in uptake of phosphorous and trace metals such as zinc and copper. a. Bacteria b. Viruses c. Fungi d. Cyanobacteria
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18) Addition of salts and other solutes from other cells into xylem sap, __________ the water potential of the xylem sap a. Increases b. Lowers c. Doesn’t effect d. Maintains
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19) Single circuit heart is found in_________? a. Fishes b. Amphibians c. Reptiles d. Mammals
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20) Stomata open due to _________ of K+ into the guard cells from the surrounding epidermis a. Diffusion b. Active transport c. Osmosis d. All of these
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21) Which of the following is true about hearts of earthworm? a. There are 5-7 pairs of heart b. They are present between 1-7th segments c. They are present lateral to the oesophagus d. They pump blood from ventral to dorsal vessel
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22) It has been estimated that in a normal person plasma constitutes about ________ by volume of blood. a. 35% b. 45% c. 55% d. 75%
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23) Brown fat present in certain mammals is specialized in___________? a. Providing insulation in cold environment b. Providing insulation in hot environment c. Rapid heat production d. Controlling heat production
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24) Panting is a representative of which mechanism? a. Pigmentation b. Respiration c. Evaporative cooling d. Excretion
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25) Formation of heat shock proteins in plants results in___________? a. Elevation of temperature in cold conditions b. Embracing the enzymes and other proteins and prevent their denaturation c. Change the chemical nature of other proteins thus making them heat resistant d. Help in evaporative cooling
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26) Fishes, most of the invertebrates and amphibians are examples of ________ animals? a. Endotherms b. Ectotherms c. Heterotherms d. Homeotherms
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27) The mechanism of regulation, generally between organism and its environment, of solutes and the gain and the loss of water is called________? a. Homeostasis b. Hemostasis c. Osmoregualtion d. Thermoregulation
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28) Which of the following represents osmoregulatory steps taken by hydrophytes? a. Increases transpiration by increasing the surface area of the leave b. Small and thick leaves to decrease the surface area proportional to the volume of the leave c. Stomata closing in sufficient supply, and opening in restricted supply of water d. None of these
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29) Most of the marine invertebrates are__________? a. Osmoconformers b. Osmoregulators c. Both depend upon the concentration of sea water d. None of these
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30) Which of the following marine fishes are considered direct descendents of fresh water ancestors? a. Hagfish b. Jelly Fish c. Star Fish d. Bony fishes
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31) Which excretory product in produced in plants during autotrophic mode of life? a. CO2 b. H2O c. O2 d. Both A and B
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32) Which of the following statement about conifers is correct? a. Stored excretory products in vacuoles, at a concentration that leads to crystal formation b. Accumulate waste in leaves, which fall in autumn c. Production of black wood in the center d. Excrete some of the waste materials directly into soil, occasionally using them as a chemical weapon against other competing plants
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33) Purine and pyrimidine metabolism results in production of____________? a. Creatinine b. Trimethyamine oxide c. Xanthine d. None of these
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34) Amount of water required to excrete 1gN of Urea is_________? a. 1 ml b. 50 ml c. 100 ml d. 150 ml
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35) Each ach nephridium of earthworm opens to the exterior by__________? a. Nephrostome b. Nephridiopore c. Flame cell d. Anus
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36) The main nitrogenous waste formed in the body of earthworm is/are___________? a. Ammonia b. Urea c. Uric acid d. Trimethylamine oxide
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37) Which of the following excretory structure is associated with gut of the organism? a. Protonephridium b. Metanephridium c. Malpighian tubules d. Nephrons
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38) Which of the following nephrons play important role in production of concentrated urine? a. Crotical b. Medullary c. Juxtramedullary d. None of these
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39) Which of the following kidney stones are most common? a. Calcium oxalate b. Calcium phosphate c. Uric acid d. All of these
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40) Which of the following treatment will be administered first in a newly diagnosed renal failure patient? a. Renal transplant b. Peritoneal Dialysis c. Lithotripsy d. Hemodialysis
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41) In plants, which of the following is a waste product produced both during photosynthesis and respiration? a. CO2 b. H2O c. O2 d. Both A and B
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42) In animals excess of nitrogen is excreted primarily in form of___________? a. Creatinine b. Trimethyamine oxide c. Pyrimidine d. Ammonia
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43) Hydra has no specialized excretory system because: a. It does not produce waste material b. Due to absence of mesoderm c. The whole body cells are in contact with water d. It has pseudocoelom
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44) The distal blind end of the malpighian tubules bathes freely in____________? a. Digestive tract b. Intestines c. Haemocoel d. Coelom
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45) Which of the following is a sentimentally arranged excretory system? a. Protonephridium b. Metanephridium c. Malpighian tubules d. Nephrons
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46) Excessive lactic acid is converted into __________ by liver? a. Glucose b. Fructose c. Sucrose d. Glycogen
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47) Each human kidney receives _______% of total cardiac out put? a. 10% b. 20% c. 30% d. 40%
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48) On which of the following site the posterior pituitary hormone acts predominantly? a. Proximal convoluted tubule b. Descending limb of loop of Henle c. Ascending limb of loop of Henle d. Collecting tubules
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49) Animals that produce metabolic heat at low level and also absorb heat from the surroundings are called__________? a. Endotherms b. Ectotherms c. Heterotherms d. Homeotherms
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50) Blubber a thick layer of fat is present in___________? a. Fresh water mammals b. Terrestrial mammals c. Marine Mammals d. Flying mammals
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