Photosynthesis in Plants PYQs Set 1 (PDF)

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Mere Teacher · Previous Year Questions NEET Biology · Photosynthesis in Plants · Set 1 (Q1-30)
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1. $In light reaction, plastoquinone facilitates the transfer of electrons from :$ (1) $PS-I to ATP synthase$ (2) $PS-II to Cytb6f complex$ (3) $Cytb6f complex to PS-I$ (4) $PS-I to N A D P^{+}$ 2. $Which one of the following is essential for photolysis of water?$ (1) $Manganese$ (2) $Zinc$ (3) $Copper$ (4) $Boron$ 3. $Anoxygenic photosynthesis is characteristic of :$ (1) $Rhodospirillum$ (2) $Spirogyra$ (3) $Chlamydomonas$ (4) $Ulva$ 4. $In a chloroplast the highest number of protons is found in:$ (1) $Stoma$ (2) $Lumen of thylakoids$ (3) $Inter membrane space$ (4) $Antennae complex$ 5. $A process that makes more important difference between C_{3} and C_{4} plants is$ (1) $Transpiration$ (2) $Glycolysis$ (3) $Photosynthesis$ (4) $Photorespiration$ 6. $The process which makes major difference between C_{3} and C_{4} plants is$ (1) $Calvin cycle$ (2) $Photorespiration$ (3) $Respiration$ (4) $Glycolysis$ 7. $Phosphoenol pyruvate (PEP) is the primary C O_{2} acceptor in:$ (1) $C_{4} plants$ (2) $C_{2} plants$ (3) $C_{3} and C_{4} plants$ (4) $C_{3} plants$ 8. $PGA as the first C O_{2} fixation product was discovered in photosynthesis of :$ (1) $Bryophyte$ (2) $Gymnosperm$ (3) $Angiosperm$ (4) $Alga$ 9. $During photorespiration, the oxygen consuming reaction(s) occur in$ (1) $Grana of chloroplasts and peroxisomes$ (2) $Stroma of chloroplasts$ (3) $Stroma of chloroplasts and mitochondria$ (4) $Stroma of chloroplasts and peroxisomes$ 10. $The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is :-$ (1) $Quinone$ (2) $Cytochrome$ (3) $Iron-sulphur protein$ (4) $Ferredoxin$ 11. $The maximum absorption of light by chlorophyll occurs in which region of the absorption spectrum.$ (1) $Red and green$ (2) $Yellow and green$ (3) $Blue and red$ (4) $Brown and red$ 12. $Which of the following combinations is required for chemiosmosis?$ (1) $Proton pump, electron gradient, NADP synthase$ (2) $Membrane, proton pump, proton gradient. ATP synthase$ (3) $Membrane, proton pump, proton gradient, NADP synthase$ (4) $Proton pump, electron gradient, ATP synthase$ 13. $The reaction center in PS II has an absorption maxima at$ (1) $780 nm$ (2) $680 nm$ (3) $700 nm$ (4) $660 nm$ 14. $A plant in your garden avoids photorespiratory losses, has improved water use efficiency shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilisation. In which of the following physiological groups would you assign this plant?$ (1) $C_{3}$ (2) $C_{4}$ (3) $CAM$ (4) $Nitrogen fixer$ 15. $Electrons from excited chlorophyll molecule of photosystem II are accepted first by :-$ (1) $Quinone$ (2) $Ferredoxin$ (3) $Cytochrome -b$ (4) $Cytochrome -f$ 16. $In photosynthesis, the light-independent reactions take place at :$ (1) $Stromal matrix$ (2) $Thylakoid lumen$ (3) $Photosystem-I$ (4) $Photosystem-II$ 17. $Cyclic photophosphorylation results in the formation of :-$ (1) $ATP and NADPH$ (2) $ATP, NADPH and O_{2}$ (3) $ATP$ (4) $NADPH$ 18. $The correct sequence of cell organelles during photorespiration is$ (1) $Chloroplast, Golgibodies, Mitochondria$ (2) $Chloroplast, Rough Endoplasmic Reticulum, Dictyosomes$ (3) $Chloroplast, Mitochondria, Peroxisome$ (4) $Chloroplast, Vacuole, Peroxisome$ 19. $C4 plants are more efficient in photosynthesis than C3 plants due to$ (1) $Higher leaf area$ (2) $Presence of larger number of chloroplasts in the leaf cells$ (3) $Presence of thin cuticle$ (4) $Lower rate of photorespiration$ 20. $In the leaves of C_{4} plants, malic acid formation during C O_{2} fixation occurs in the cells of :-$ (1) $Epidermis$ (2) $Mesophyll$ (3) $Bundle Sheath$ (4) $Phloem$ 21. $The first stable product of CO_{2} fixation in sorghum is:$ (1) $Oxaloacetic acid$ (2) $Succinic acid$ (3) $Phosphoglyceric acid$ (4) $Pyruvic acid$ 22. $During non-cyclic photophosphorylation, when electrons are lost from the reaction center at PS II, what is the source which replaces these electrons?$ (1) $Oxygen$ (2) $Water$ (3) $Carbon dioxide$ (4) $Light$ 23. $How many ATP and NADPH, are required for the synthesis of one molecule of Glucose during Calvin cycle?$ (1) $18 ATP and 16 NADPH_{2}$ (2) $12 ATP and 12 NADPH_{2}$ (3) $18 ATP and 12 NADPH_{2}$ (4) $12 ATP and 16 NADPH_{2}$ 24. $Emerson’s enhancement effect and Red drop have been instrumental in the discovery of:$ (1) $Photophosphorylation and non-cyclic electron transport$ (2) $Two photosystems operating simultaneously$ (3) $Photophosphorylation and cyclic electron transport$ (4) $Oxidative phosphorylation$ 25. $Separation of leaf pigments of any green plants can be carried out by$ (1) $X-ray radiography$ (2) $Paper chromatography$ (3) $Half-leaf experiment$ (4) $Variegated leaf experiment$ 26. $In leaves of C_{4} plants malic acid synthesis during C O_{2} fixation occurs in :-$ (1) $Bundle sheath$ (2) $Guard cells$ (3) $Epidermal cells$ (4) $Mesophyll cells$ 27. $PGA as the first C O_{2} fixation product was discovered in the photosynthesis of$ (1) $Bryophyte$ (2) $Gymnosperm$ (3) $Angiosperm$ (4) $Alga$ 28. $One scientist cultured Cladophora in a suspension of Azotobacter and illuminated the culture by splitting light through a prism. He observed that bacteria accumulated mainly in the region of:$ (1) $Violet and green light$ (2) $Indigo and green light$ (3) $Orange and yellow light$ (4) $Blue and red light$ 29. $The products of light reaction in photosynthesis are:$ (1) $ATP, NADPH, O_{2} and H_{2} O$ (2) $ATP, NADPH and H_{2} O$ (3) $ATP, NADPH and C O_{2}$ (4) $ATP, NADPH and O_{2}$ 30. $A plant in your garden avoids photorespiratory losses, has improved water use efficiency shows high rates of photosynthesis at high temperatures and has improved efficiency of nitrogen utilization. In which of the following physiological groups would you assign this plant?$ (1) $C_{3}$ (2) $C_{4}$ (3) $CAM$ (4) $Nitrogen$