Biology MCQs

Page No. 43

The organisms able to use sunlight directly as a source of energy are_____________?


aPlants


bAnimals


cOmnivores


dFungi


View Answer Plants

Quantitative study of energy relationships in biological systems obeys.


aBioenergetics


bLaws of thermodynamics


cLaws of thermo chemistry


dLaws of chemical energetic



Which of the following is a compensation point:


aLeaves respire and utilize O2 and release CO2.


b Photosynthesis and respiration occur at same rate. So there is not net exchange of gases between atmosphere and plants.


cRate of photosynthesis increases, so do the O2 production, with a net release of oxygen coupled with the uptake of CO2.


dRate of respiration becomes more than rate of photosynthesis.



Molecular formula of chlorophyll b is_____________?


aC55 H10 O4 N6 Mg


bC55 H70 O6 N5 Mg


cC55 H71 O6 N4 Mg


dC55 H70 O6 N4 Mg


View Answer C55 H70 O6 N5 Mg

At which times there is no net gaseous exchange between leaves and the atmosphere.


aDay time.


bNight time.


cDawn & Dusk.


dMid night.


View Answer Dawn & Dusk.

Bacteriochlorophylls does not include________________?


aChlorophyll e


bChlorophyll d


cChlorophyll a


dChlorophyll c


View Answer Chlorophyll a

C6H12O6 + 6O2 ? 6CO2 + 6H20 + ENERGY represents:____________?


aPhotosynthesis


bAerobic respiration


cAnaerobic respiration


dRespiration


View Answer Aerobic respiration

Photosynthesis is process in which ________ compounds of carbon (CO2) and hydrogen (H2O) are reduced to carbohydrate like (glucose) using light energy.


aOrganic


bEnergy rich


cEnergy poor


dReduced


View Answer Energy poor

Which of the following is a chemical link between catabolism and anabolism?


aAMP


bADP


cATP


dAll of these


View Answer ATP

Which of the following feature is not related to neuron?


aConduction


bRegeneration


cReflex


dMovement


View Answer Regeneration

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