Biology MCQs

Page No. 84

The trioses which are intermediate in respiration and photosynthesis are_______________?


aGlyceraldehydes


bDihydroxy acetone


cBoth of these


dNone of these


View Answer Both of these

The first stage of development in which a cavity appears is the__________?


aNeurula


bMorula


cGastrula


dBalastula


View Answer Balastula

In living organisms the lubricant which provides protection against damage resulting from friction is___________?


aCarbohydrates


bFatty acid


cWater


dProtein


View Answer Water

The basic structural unit of a chromosome is____________?


aThe centromere


bNuceleosome


cTelomere


dHistone


View Answer Nuceleosome

Exposure to low temperature stimulates plants to flower. This is called___________?


aPhotoperiodism


bThermotropism


cVernalisation


dThermoregulation


View Answer Vernalisation

In Cx(H2O)y x ranges from______________?


a1 to 3 thousand


b3 to many thousand


c3 to 5 thousand


d5 to 9 thousand


View Answer 3 to many thousand

The cells present in testes and secrete testosterone are___________?


aSertoli cells


bGerminal cell


cInterstitial cells


dSpermatocyte


View Answer Interstitial cells

Glycolipids and glycoproteins have structural role in the ______________ matrix of animal and bacterial cell?


aExtracellular


bIntracellular


cBoth of these


dGlucose


View Answer Extracellular

The type of learning in which there is loss or decrease in response to repeated stimuli?


aImprinting


bHabituation


cLatent learning


dInsight learning


View Answer Habituation

Keto group is represented as___________?


aCO


bC-COO-C


cHCOH


dHOH


View Answer CO

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