Question 0Which of the following conditions is NOT necessary for photosynthesis to take place?A.ChlorophyIIB.LightC.Carbon(II)oxideD.Carbon(IV)oxideE.Objective Show full explanation
Question 0The insects in which the maxillae are modified into a long coiled proboscis isA.houseflyB.butterflyC.mosquitoD.grasshopperE.Objective Show full explanation
Question 0When a cell is placed in solution and the size of the cell increases, the concentration of solution is said to beA.isotonicB.diluteC.hypotonicD.hypertonicE.Objective Show full explanation
Question 0Which of the following plant hormone is responsible for ripening of fruits?A.GibberellinsB.Abscisic acidC.EthyleneD.CytokininsE.Objective Show full explanation
Question 0The ability of a living organism to detect and respond to changes in the environment is referred to asA.locomotionB.taxisC.irritabilityD.growthE.Objective Show full explanation
Question 0An example of an endospermous seed isA.been seedB.cashew nutC.cotton seedD.maize grainE.Objective Show full explanation
Question 0Which of the following theories was NOT considered by Darwin in his evolutionary theory?A.variationB.survival of the fitestC.use and disuseD.competitionE.Objective Show full explanation
Question 0Which of the following protects the essential parts of the flower at bud stage?A.StamensB.SepalsC.PetalsD.CarpelsE.Objective Show full explanation
Question 0which of the following is an agent of a sexually transmitted disease?A.Entamoeba histolyticaB.Salmonella typhiC.Treponema pallidumD.Clostridium tetaniE.Objective Show full explanation
Question 0Which of the following animals has homodont dentition?A.RatB.ManC.LizardD.PigeonE.Objective Show full explanation
Question 0The movement of blood between the heart and all other parts of the body besides the lung is known asA.systemic circulationB.closed circulatory systemC.pulmonary circulationD.single circulation systemE.Objective Show full explanation
Question 0If the cross of a red-flowered plant with a white flowered plant produces a pink flowered plant, this is an example ofA.codominanceB.incomplete dominanceC.mutationD.linkageE.Objective Show full explanation
Question 0The largest amount of yolk is found in the egg ofA.amphibiansB.piscesC.repitlesD.avesE.Objective Show full explanation
Question 0Fibrinogen and prothrombin play important roles in theA.deamination of proteinsB.clotting of bloodC.detoxication of substancesD.storage of vitaminsE.Objective Show full explanation
Question 0The pathogen that cause smallpox isA.picornavirusB.peramyxovirusC.herpesvirusD.poxvirusE.Objective Show full explanation
Question 0The vector for the malaria parasite is aA.female edes mosquitoB.female Anopheles mosquitoC.female culex mosquitoD.female culex mosquitoE.Objective Show full explanation
Question 0Which of the following pairs are social insects?A.Termite and locustB.Ants and wapC.Cockroach and beeD.Termite and beeE.Objective Show full explanation
Question 0Which of the following is NOT a method of conserving wild life?A.Indiscriminate poachingB.Establishment of zoological gardensC.Enacting wildlife conservation lawsD.Establishment of game reservesE.Objective Show full explanation
Question 0The importance of the mouth-brooding behaviour in Tilapia is that itA.helps in keeping the young fish warmB.affords protection from predation for the young fishC.helps the fish to live in a social groupD.provides regurgitated nourishment to the young fishE.Objective Show full explanation
Question 0The type of asexual reproduction that is common to both Paramecium and Protists isA.fragmentationB.buddingC.sporulationD.fissionE.Objective Show full explanation
Question 0The micro-organisms that causes Typhoid disease isA.trypanosome gambienseB.Salmonella typhiC.entamocbahistolyticaD.plasmodium spE.Objective Show full explanation
Question 0A collection of population of all living organisms that exist in a habitat is referred to asA.nicheB.ecosystemC.communityD.environmentE.Objective Show full explanation
Question 0The theory of use and disuse of organs was promulgated byA.Alfred WallaceB.Charles DarwinC.Jean LamarckD.Robert HookE.Objective Show full explanation
Question 0The theory of natural selection was postulated byA.Gregor MendelB.Matthias SchleidenC.Charles DarwinD.Robert HookE.Objective Show full explanation
Question 0The movement response of a cockroach away from a light source isA.negative phototropismB.positive phototaxismC.negative phototropismD.postive phototropismE.Objective Show full explanation
Question 0Which of the following can cause shrinkage of living cells?A.Deionized waterB.Hypotonic solutionC.Isotonic solutionD.Hypertonic solutionE.Objective Show full explanation
Question 0The ability of chemelon to change its colour rapidly is an adaptation forA.obtaining foodB.attraction mateC.communicationD.escaping detectionE.Objective Show full explanation
Question 0The function of the red head in male Agama lizards is toA.scare other males from the territoryB.warn predators of the distastefulness of the animalC.attract female lizards for mating purposesD.conceal and camouflage the animal from predatorsE.Objective Show full explanation
Question 0The activity of ptyalin is likely to decrease with an increase in the concentration ofA.oxygenB.starchC.proteinD.acidE.Objective Show full explanation
Question 0Seed plants are divided intoA.monocoty ledons and dicotyledonsB.tracheophytes and fernsC.angiosperms and gymnospermsD.thallophytes and bryophytesE.Objective Show full explanation
Question 0The adaptive importance of the nuptial flight from termite colonies is toA.ensure cross-breeding between members of one colony and anotherB.disperse the reproductives in order to establish new coloniesC.provide abundant food for birds and other animals during the early rainsD.expel the reproductives so as to provide enough food for other membersE.Objective Show full explanation
Question 0The sequence of the one-way gaseous exchange mechanism in a fish isA.gills ⇢ operculum ⇢ mouthB.mouth ⇢ gills ⇢ operculumC.mouth ⇢ operculum ⇢ gillsD.operculum ⇢ mouth ⇢ gillsE.Objective Show full explanation
Question 0In the nitrogen cycle, the nitrates in the soil are converted to atmospheric nitrogen byA.puterfying bacteriaB.nitrogen-fixing bacteriaC.nitrifying bacteriaD.denitrifying bacteriaE.Objective Show full explanation
Question 0The relationship between a termite and the protozoam in its intestine is described asA.predationB.saproplytismC.symbiosisD.parasitismE.Objective Show full explanation
Question 0Exo-erythrocytic phase of the life cycle of malaria parasite occurs in theA.liver of humansB.reticuloendothelial cells of humansC.Malphigian tubules of mosquitoD.brain of humansE.Objective Show full explanation
Question 0Which of the following organs regulates the levels of water. salts, hydrogen ions, and urea in the mammals?A.KidneyB.ColonC.BladderD.LiverE.Objective Show full explanation
Question 0The rate of transpiration is NOT affected byA.the weight of the stomata poresB.humidityC.temperatureD.the size of the stomata poresE.Objective Show full explanation
Question 0The crossing of individuals of the same species with different genetic characters isA.croos breedingB.polygenic inheritanceC.non-disjunctinD.inbreedingE.Objective Show full explanation
Question 0The hereditary characters in plants and animals are located on theA.geneB.mucleusC.chromosomeD.cellE.Objective Show full explanation
Question 0The arrangement of ovules attached to the sides of a syncarpous ovary with a single chamber is referred to asA.free-central placentationB.axile placentationC.parietal placentationD.marginal placentationE.Objective Show full explanation
Question 0When sickle cell carrier marries a normal woman, the probability of them having a normal offspring isA.0.75B.0.25C.0.5D..1E.Objective Show full explanation
Question 0In which of the following groups of vertebrates is parental care mostly exhibited?A.AvesB.ReptiliaC.AmphibiaD.MammaliaE.Objective Show full explanation
Question 0An example of a non-bio degrable pollutants isA.dungB.bonesC.ceramicsD.woodsE.Objective Show full explanation
Question 0The bacteria that is found in the root nodules of leguminous plants isA.clostridiumB.rhizobiumC.nostocD.azotobacterE.Objective Show full explanation
Question 0Which of these organisms partly digest its food extracellularly?A.HouseflyB.CockroachC.TermiteD.MosquitoE.Objective Show full explanation
Question 0Strong short and concical beak to pick and crush seeds is an adaptive feature ofA.duckB.owlC.weaver birdD.hawkE.Objective Show full explanation
Question 0The path followed by air as it passes through the lungs in mammals isA.bronchi ⇢ trachea ⇢ alveoli ⇢ bronchiolesB.bronchioles ⇢ alveoli ⇢ bronchi ⇢ tracheaC.trachea ⇢ bronchi ⇢ bronchioles ⇢ alveoliD.trachea ⇢ bronchioles ⇢ bronchi ⇢alveoliE.Objective Show full explanation
Question 0In which of the following species is the biomass of an individual the smallest?A.Tilapia spB.Agama spC.Bufo spD.Spirogvra spE.Objective Show full explanation
Question 0The path followed by air as it passes through the lungs in mammalsA.cochleaB.pinnaC.perilymphD.vestibular systemE.Objective Show full explanation
Question 0The part of the mammalian ear responsible for the maintenance of balance is theA.cochleaB.pinnaC.perilymphD.vestibular systemE.Objective Show full explanation