MCQ Chapter 12 Biology Class 11 महाराष्ट्र Board Photosynthesis 1. What is photophosphorylation?Formation of glucose in lightFormation of ATP in the presence of lightRelease of oxygen in the darkReduction of CO₂ in the stromaQuestion 1 of 202. What are the two major reactions in photosynthesis?Light reaction and respirationLight reaction and dark reactionCyclic and non-cyclic phosphorylationCarboxylation and reductionQuestion 2 of 203. What is produced during the light reaction?Glucose and oxygenATP and NADPH₂CO₂ and waterRuBP and PGAQuestion 3 of 204. What happens when a chlorophyll molecule absorbs a photon?It releases oxygenAn electron is boosted to a higher energy levelIt synthesizes glucoseIt breaks down waterQuestion 4 of 205. What are P680 and P700 in photosynthesis?Types of carotenoidsReaction centers in photosystemsEnzymes in the Calvin cycleElectron carriers in the stromaQuestion 5 of 206. What is the role of antenna molecules in photosynthesis?They fix CO₂They absorb and transfer light energy to reaction centersThey produce ATPThey release oxygenQuestion 6 of 207. What does Photosystem II primarily do?Produces NADPH₂Brings about photolysis of waterFixes CO₂Regenerates RuBPQuestion 7 of 208. What is the byproduct of water photolysis in Photosystem II?Carbon dioxideOxygenGlucoseATPQuestion 8 of 209. What is the role of Photosystem I in photosynthesis?It splits water to release oxygenIt produces NADPH₂It fixes CO₂It regenerates ATPQuestion 9 of 2010. What is cyclic photophosphorylation?Electron flow involving both PS I and PS IIElectron flow only through PS I, producing ATPElectron flow producing glucoseElectron flow releasing oxygenQuestion 10 of 2011. What is non-cyclic photophosphorylation?Electron flow involving only PS IElectron flow involving PS I and PS II, producing ATP and NADPHElectron flow producing glucoseElectron flow without ATP productionQuestion 11 of 2012. Where does the dark reaction occur in the chloroplast?In the thylakoid membraneIn the stromaIn the granaIn the lumenQuestion 12 of 2013. Who was awarded the Nobel Prize for working out the Calvin cycle?HillVan NielCalvinRubenQuestion 13 of 2014. What is the first stable product in the Calvin cycle?Glucose3-phosphoglyceric acid (3-PGA)Oxaloacetic acidMalic acidQuestion 14 of 2015. What enzyme catalyzes the carboxylation step in the Calvin cycle?PEPCORubiscoMalic enzymePyruvate kinaseQuestion 15 of 2016. How many ATP molecules are required to produce one glucose molecule in the Calvin cycle?6121830Question 16 of 2017. What is photorespiration?A process that fixes CO₂ efficientlyA wasteful process releasing CO₂ in C3 plantsA process occurring in C4 plantsA process producing ATPQuestion 17 of 2018. Which organelles are involved in photorespiration?Chloroplasts, mitochondria, and peroxisomesChloroplasts and nucleusMitochondria and endoplasmic reticulumChloroplasts and vacuolesQuestion 18 of 2019. What is the first stable product in the C4 pathway?3-phosphoglyceric acidOxaloacetic acidGlucoseRuBPQuestion 19 of 2020. What is Kranz anatomy in C4 plants?Absence of chloroplasts in bundle sheath cellsBundle sheath cells with large chloroplasts and less granaMesophyll cells with no chloroplastsStomata closed during the dayQuestion 20 of 20 Loading...
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