MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 72 Mcqs, each offering curated multiple-choice questions to sharpen your BITSAT knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which of the following plants undergo CAM photosynthesis? |
| A. | Cactus |
| B. | Sugarcane |
| C. | Corn |
| D. | Wheat |
| Answer» B. Sugarcane | |
| 2. |
What is the final product of the C4 cycle? |
| A. | Aspartate |
| B. | Malate |
| C. | Oxalate |
| D. | Acetate |
| Answer» C. Oxalate | |
| 3. |
How many aquatic plant genera can undergo CAM photosynthesis? |
| A. | 4 |
| B. | 5 |
| C. | 6 |
| D. | 7 |
| Answer» B. 5 | |
| 4. |
The CAM pathway starts at daytime. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 5. |
Which of the following leaf anatomy is a characterization of C4 plants? |
| A. | Piezo anatomy |
| B. | Norman anatomy |
| C. | Kranz anatomy |
| D. | Richard anatomy |
| Answer» D. Richard anatomy | |
| 6. |
Where does the C4 pathway take place? |
| A. | Bundle sheath |
| B. | Xylem |
| C. | Mesophylls |
| D. | Phloem |
| Answer» D. Phloem | |
| 7. |
Where is the malate stored in CAM plants? |
| A. | Chloroplast |
| B. | Mitochondria |
| C. | Vacuoles |
| D. | Endoplasmic reticulum |
| Answer» D. Endoplasmic reticulum | |
| 8. |
Which enzyme plays the role of a catalyst in CO₂ fixation in C4 plants? |
| A. | Carbonic mutase |
| B. | Carbonic reductase |
| C. | Carbonic anhydrase |
| D. | Carbonic dehydrogenase |
| Answer» D. Carbonic dehydrogenase | |
| 9. |
Which of the following organisms has photosynthetic pigments in it? |
| A. | Yeast |
| B. | Nitrosomonas |
| C. | Spirulina |
| D. | Phosphobacter |
| Answer» D. Phosphobacter | |
| 10. |
The number of chloroplasts found in Arabidopsis thaliana is _____________ |
| A. | 100 |
| B. | 150 |
| C. | 50 |
| D. | 200 |
| Answer» B. 150 | |
| 11. |
Which pigment is responsible for the process of sunlight? |
| A. | Chlorophyll a |
| B. | Chlorophyll b |
| C. | Xanthophyll |
| D. | Anthocyanin |
| Answer» B. Chlorophyll b | |
| 12. |
The sunlight is captured by the membrane of thylakoids. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 13. |
Which atoms are present in the porphyrin of a chlorophyll molecule? |
| A. | iron |
| B. | magnesium |
| C. | calcium |
| D. | sulphur |
| Answer» C. calcium | |
| 14. |
Which part of the chlorophyll is responsible for absorption of light? |
| A. | hydrophobic phytol chain |
| B. | porphyrin ring |
| C. | thylakoid membrane |
| D. | outer membrane |
| Answer» C. thylakoid membrane | |
| 15. |
Pigments absorb light of particular wavelengths. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 16. |
The CAM plants undergo daytime acidification and nighttime deacidification. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 17. |
Which enzyme is used to convert oxaloacetate to malate? |
| A. | Malate dehydrogenase |
| B. | Malate hydrolase |
| C. | Malate carboxylase |
| D. | Malate dehydratase |
| Answer» B. Malate hydrolase | |
| 18. |
Carotenoids dissipate absorbed energy as heat. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 19. |
Which redox-regulated protein controls the functioning of Calvin cycle? |
| A. | CP4 |
| B. | CP8 |
| C. | CP12 |
| D. | CP16 |
| Answer» D. CP16 | |
| 20. |
C4 pathway uses 5 ATP molecules and 4 NADPH molecules as the energy source. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 21. |
Which pigment constitutes majorly in absorbing sunlight for photosynthesis? |
| A. | Chlorophyll a |
| B. | Chlorophyll b |
| C. | Xanthophyll |
| D. | Anthocyanin |
| Answer» C. Xanthophyll | |
| 22. |
Which enzyme is used in converting bicarbonate ion to oxaloacetate? |
| A. | Phosphoenolpyruvate reductase |
| B. | Phosphoenolpyruvate hydrogenase |
| C. | Phosphoenolpyruvate carboxylase |
| D. | Phosphoenolpyruvate dehydrogenase |
| Answer» D. Phosphoenolpyruvate dehydrogenase | |
| 23. |
Which of the following is an example of C4 plants? |
| A. | Sugarcane |
| B. | Wheat |
| C. | Rice |
| D. | Cactus |
| Answer» B. Wheat | |
| 24. |
The C4 plants grow in the cold climate places. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» C. May be True or False | |
| 25. |
What are carotenoids? |
| A. | pigments |
| B. | cell organelles |
| C. | terrestrial plants |
| D. | granulated thylakoids |
| Answer» B. cell organelles | |
| 26. |
Who discovered C4 cycle? |
| A. | Hatch and Slack |
| B. | Kolliker |
| C. | Robert Brown |
| D. | Rudolph Markus |
| Answer» B. Kolliker | |
| 27. |
What is the enzyme used in the conversion of pyruvate to phosphoenolpyruvate? |
| A. | Pyruvate monophosphate dikinase |
| B. | Pyruvate orthophosphate dikinase |
| C. | Pyruvate monophosphate reductase |
| D. | Pyruvate orthophosphate reductase |
| Answer» C. Pyruvate monophosphate reductase | |
| 28. |
The total carbon dioxide fixation done by the C4 plants is _________ |
| A. | 3% |
| B. | 13% |
| C. | 23% |
| D. | 33% |
| Answer» D. 33% | |
| 29. |
What is the chemical formula for oxaloacetic acid? |
| A. | C₄H₃O₅ |
| B. | C₄H₄O₅ |
| C. | C₄H₄O₆ |
| D. | C₃H₄O₅ |
| Answer» C. C₄H₄O₆ | |
| 30. |
How many times should the Calvin cycle happen, in order to obtain one glucose molecule? |
| A. | 2 |
| B. | 4 |
| C. | 3 |
| D. | 6 |
| Answer» E. | |
| 31. |
Which of the following contains a linear system of conjugated double bonds? |
| A. | β-carotene |
| B. | chlorophyll |
| C. | chloroplast |
| D. | thylakoid |
| Answer» B. chlorophyll | |
| 32. |
Who first discovered chloroplast? |
| A. | J Rhodin |
| B. | Robert Porter |
| C. | Camillo Golgi |
| D. | Konstantin Mereschkowski |
| Answer» E. | |
| 33. |
What is the diameter of a chloroplast? |
| A. | 1 – 2 micrometer |
| B. | 2 – 4 micrometer |
| C. | 4 – 6 micrometer |
| D. | 6 – 10 micrometer |
| Answer» D. 6 – 10 micrometer | |
| 34. |
The mass of chloroplast DNA is __________ |
| A. | 10 – 15 million daltons |
| B. | 50 – 100 million daltons |
| C. | 80 – 130 million daltons |
| D. | 25 – 125 million daltons |
| Answer» D. 25 – 125 million daltons | |
| 35. |
Which of the following type of spectrum is a plot of efficiency of different types of wavelengths in bringing about the photosynthesis? |
| A. | absorption spectrum |
| B. | action spectrum |
| C. | efficiency spectrum |
| D. | reflection spectrum |
| Answer» C. efficiency spectrum | |
| 36. |
What is the name of the book written by Jan Ingenhousz, which explains the basis of photosynthesis? |
| A. | Experiments upon Fruits |
| B. | Experiments upon Vegetables |
| C. | Experiments upon Plants |
| D. | Experiments upon Animals |
| Answer» C. Experiments upon Plants | |
| 37. |
Photosystem II happens before photosystem I. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 38. |
Which of the following amino acid is helpful in the synthesis of plastoquinone? |
| A. | Valine |
| B. | Isoleucine |
| C. | Leucine |
| D. | Tyrosine |
| Answer» E. | |
| 39. |
What is the other name of Plastoquinol – plastocyanin reductase? |
| A. | Cytochrome b₄f complex |
| B. | Cytochrome b₅f complex |
| C. | Cytochrome b₆f complex |
| D. | Cytochrome b₅g complex |
| Answer» D. Cytochrome b₅g complex | |
| 40. |
What is the maximum wavelength of light photosystem II can absorb? |
| A. | 680nm |
| B. | 450nm |
| C. | 700nm |
| D. | 230nm |
| Answer» B. 450nm | |
| 41. |
In which part of the plant, does photosynthesis takes place? |
| A. | Peroxisomes |
| B. | Glyoxisomes |
| C. | Quantosomes |
| D. | Lysosomes |
| Answer» D. Lysosomes | |
| 42. |
Which pigment protects the photosystem from ultraviolet radiation? |
| A. | Chlorophyll a |
| B. | Chlorophyll b |
| C. | Carotenoids |
| D. | Anthocyanin |
| Answer» D. Anthocyanin | |
| 43. |
What is the chemical formula of chlorophyll a? |
| A. | C₄₅H₇₂MgN₄O₅ |
| B. | C₅₅H₇₂MgN₄O₅ |
| C. | C₅₅H₇₂MnN₄O₅ |
| D. | C₄₅H₇₂MnN₄O₅ |
| Answer» C. C₅₅H₇₂MnN₄O₅ | |
| 44. |
Chloroplast divide by binary fission. |
| A. | True |
| B. | False |
| C. | May be True or False |
| D. | Can't say |
| Answer» B. False | |
| 45. |
What disease is caused by the dysfunction of chloroplast? |
| A. | Leaf spot |
| B. | Blight spot |
| C. | Leaf variegation |
| D. | Powdery mildew |
| Answer» D. Powdery mildew | |
| 46. |
The site of photophosphorylation is __________ |
| A. | Chloroplast |
| B. | Mitochondria |
| C. | Endoplasmic reticulum |
| D. | Nucleus |
| Answer» B. Mitochondria | |
| 47. |
Which enzyme helps in the flow of protons from the thylakoid to the stroma? |
| A. | ADP synthase |
| B. | ATP synthase |
| C. | ADP hydrolase |
| D. | ADP hydrolase |
| Answer» C. ADP hydrolase | |
| 48. |
Which of the following organisms contain Chlorosome? |
| A. | Green Sulphur bacteria |
| B. | Blue green bacteria |
| C. | Purple bacteria |
| D. | Plant cells |
| Answer» B. Blue green bacteria | |
| 49. |
How many micromoles of CO₂ is fixed per milligram of chloroplast in an hour? |
| A. | 2.5 |
| B. | 3 |
| C. | 3.5 |
| D. | 4 |
| Answer» D. 4 | |
| 50. |
Which of the following organisms lack photophosphorylation? |
| A. | Algae |
| B. | Cyanobacteria |
| C. | Plants |
| D. | Yeast |
| Answer» E. | |