This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 13 Photosynthesis In Higher Plants – Quiz 4 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 13 Photosynthesis In Higher Plants Quiz 4 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which areas of the leaf should go black with iodine? A) Green bits. B) White bits. C) Both. D) Neither. Show Answer Correct Answer: A) Green bits. 2. All plants are divided first into what 2 major categories? A) Vascular or non-vascular. B) Seed or seedless. C) Angiosperms or gymnosperms. D) Land or aquatic. Show Answer Correct Answer: A) Vascular or non-vascular. 3. The phytol tail anchors the porphyrin ring to the ..... part of thylakoid membrane A) Protein. B) Lipids. C) Both of the above. D) None of the above. Show Answer Correct Answer: B) Lipids. 4. Which of the following is NOT the product of light reaction of photosynthesis? [NEET (UG) 2018] A) NADPH. B) NADH. C) Oxygen. D) ATP. Show Answer Correct Answer: B) NADH. 5. Select incorrect statement. A) Chlorophyll a undergoes oxidation. B) Action spectra is greater in blue and red light. C) Chlorophyll a and b are chief pigments associated with photosynthesis. D) PS II is involved in evolution of O$_{2}$. Show Answer Correct Answer: C) Chlorophyll a and b are chief pigments associated with photosynthesis. 6. What part of the plant soaks up water for photosynthesis? A) Petals. B) Roots. C) Leaf. D) Stem. Show Answer Correct Answer: B) Roots. 7. What are the two main stages of photosynthesis? A) Chlorophyll activation and glucose production. B) Light-dependent reactions and light-independent reactions (Calvin cycle). C) Photosynthesis and respiration. D) Light absorption and energy storage. Show Answer Correct Answer: B) Light-dependent reactions and light-independent reactions (Calvin cycle). 8. Why do C4 plants have greater productivity of biomass compared to C3 plants? A) They lack a process called photorespiration. B) They use less sunlight. C) They have smaller leaves. D) They require less water. Show Answer Correct Answer: A) They lack a process called photorespiration. 9. Which enzyme can fix both CO2 and O2? A) RuBP. B) PEP Carboxylase. C) RuBisCo. D) Phosphoenolpyruvate. Show Answer Correct Answer: C) RuBisCo. 10. What are the main reactants in the photosynthesis equation? A) Carbon dioxide and water. B) Hydrogen and methane. C) Nitrogen and sulfur. D) Oxygen and glucose. Show Answer Correct Answer: A) Carbon dioxide and water. 11. What part of the plant absorbs water for photosynthesis? A) Leaves absorb water from the air. B) Stems absorb water from the soil. C) Flowers absorb water from the ground. D) Roots absorb water from the soil. Show Answer Correct Answer: D) Roots absorb water from the soil. 12. Fo part of ATPase forms a transmembrane channel that carries out A) Active diffusion of protons. B) Active diffusion of ATP. C) Facilitated diffusion of H+. D) Facilitated diffusion of H+ and e-. Show Answer Correct Answer: C) Facilitated diffusion of H+. 13. Which pigment is water soluble? A) Carotene. B) Anthocyanin. C) Chlorophyll. D) Xanthophyll. Show Answer Correct Answer: B) Anthocyanin. 14. In negative phototropism, which way do roots grow in a plant? A) Towards touch. B) Away from water. C) Towards gravity. D) Away from sunlight. Show Answer Correct Answer: D) Away from sunlight. 15. C4 cycle takes place in A) Wheat. B) Sugarcane. C) Barley. D) Chlorella. Show Answer Correct Answer: B) Sugarcane. 16. Which organ contains small openings that allow for air exchange A) Xylem. B) Phloem. C) Stomata. D) Cambium. Show Answer Correct Answer: C) Stomata. 17. Moll's half-leaf experiment proves that ..... is essential for photosynthesis to take place. A) Chlorophyll. B) Light. C) H2O. D) CO2. Show Answer Correct Answer: D) CO2. 18. The enzyme that is not found in a C3 plant is A) PEP carboxylase. B) RuBP carboxylase. C) ATP Synthase. D) NADP reductase. Show Answer Correct Answer: A) PEP carboxylase. 19. What is the difference between C3 and C4 photosynthesis? A) C4 photosynthesis is more efficient in low light conditions. B) C3 photosynthesis produces oxygen while C4 does not. C) C3 photosynthesis occurs only in aquatic plants. D) C3 photosynthesis fixes CO2 into a 3-carbon compound, while C4 photosynthesis fixes CO2 into a 4-carbon compound. Show Answer Correct Answer: D) C3 photosynthesis fixes CO2 into a 3-carbon compound, while C4 photosynthesis fixes CO2 into a 4-carbon compound. 20. What leaf structure prevents water loss? A) Phloem. B) Stoma. C) Cuticle. D) Spongy mesophyll. Show Answer Correct Answer: C) Cuticle. 21. What is the significance of the Calvin Cycle in photosynthesis? A) It splits water molecules. B) It releases oxygen. C) It converts carbon dioxide into glucose. D) It captures light energy. Show Answer Correct Answer: C) It converts carbon dioxide into glucose. 22. What is the function of stomata in photosynthesis? A) To absorb sunlight for photosynthesis. B) To allow the exchange of gases, including the intake of carbon dioxide and release of oxygen. C) To store water for the plant. D) To provide structural support to the leaves. Show Answer Correct Answer: B) To allow the exchange of gases, including the intake of carbon dioxide and release of oxygen. 23. . Who used prism, green alga Cladophora and aerobic bacteria and plotted the first action spectrum for photosynthesis? A) Engelmann. B) Arnon. C) Arnold. D) Sachs. Show Answer Correct Answer: A) Engelmann. 24. The membranous system of grana is responsible for- A) Trapping light energy but not ATP and NADPH2 formation. B) Trapping light energy and also for fixation of CO$_{2}$. C) For ATP and NADPH$_{2}$ formation but not for light trapping. D) For light capturing and also for NADPH$_{2}$ and ATP formation. Show Answer Correct Answer: D) For light capturing and also for NADPH$_{2}$ and ATP formation. 25. What is produced in the leaves of the plant? A) Oxygen and water. B) Carbon dioxide only. C) Glucose and oxygen. D) Oxygen only. Show Answer Correct Answer: C) Glucose and oxygen. 26. Which statement about photosynthesis is correct? A) Plants get the energy they need for photosynthesis from sunlight. B) Plants do not require energy to perform photosynthesis. C) Plants get the energy they need for photosynthesis from water. D) Plants get the energy they need for photosynthesis from soil. Show Answer Correct Answer: A) Plants get the energy they need for photosynthesis from sunlight. 27. What are moss plants produced from? A) Spruce. B) Cones. C) Spores. D) Seeds. Show Answer Correct Answer: C) Spores. 28. Can photosynthesis occur with only carbon dioxide and sunlight? (No Water)? A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 29. In which part of the plant does photosynthesis mainly occur? A) Stem. B) Leaves. C) Roots. D) Flowers. Show Answer Correct Answer: B) Leaves. 30. Which helped in confirming that oxygen evolved in photosynthesis comes from water A) $^{14}$CO$^{2}$. B) $^{3}$H$_{2}$O. C) H$_{2}$ $^{18}$O. D) $^{15}$NO$_{3}$. Show Answer Correct Answer: C) H$_{2}$ $^{18}$O. 31. Rubisco is important in which step of photosynthesis A) Regeneration phase as RUBP is made during the Calvin cycle. B) Carbon fixation when CO2 is bound to RUBP during the Calvin cycle. C) Reduction of the carbon chain during the Calvin cycle. D) Energizing the electrons in chlorophyll in order to activate NAD+. Show Answer Correct Answer: B) Carbon fixation when CO2 is bound to RUBP during the Calvin cycle. 32. In which of the following phosphorylation in absent: A) Glycolysis. B) Kreb cycle. C) ETS. D) C$_{4}$ cycle. Show Answer Correct Answer: D) C$_{4}$ cycle. 33. Minimum photosynthesis takes place in A) Green light. B) Blue light. C) Red light. D) White light. Show Answer Correct Answer: A) Green light. 34. The structure that are formed by stacking of organized flattened membranous sacs in chloroplast are:[ AIPMT 2015 ] A) Cristae. B) Grana. C) Stroma lamellae. D) Stroma. Show Answer Correct Answer: B) Grana. 35. Which plant structures are responsible for capturing sunlight for photosynthesis? A) Chloroplasts. B) Roots. C) Stems. D) Stomata. Show Answer Correct Answer: A) Chloroplasts. 36. Suppose you transplant a sun plant to a shaded forest floor that receives about 100 $\mu mol\\frac{photons}{\frac{m^2}{s}}$ A) Yes. B) No. C) All the above. D) None of the above. Show Answer Correct Answer: B) No. 37. When oxygen is released as a result of photosynthesis, it is a direct by-product of A) Reducing NADP+. B) Splitting water molecules. C) Chemiosmosis. D) Electron transfer in photosystem II and I. Show Answer Correct Answer: B) Splitting water molecules. 38. What enzyme fixes CO$_{2}$ in C$_{4}$ and CAM plants? A) PEP carboxylase. B) ATP synthase. C) Lactase. D) RubisCO. Show Answer Correct Answer: A) PEP carboxylase. 39. A green plant is kept in a brightly lighted area for 48 hours. What will most likely occur if the light intensity is reduced slightly during the next 48 hours? A) Photosynthesis will stop completely. B) Glucose production inside each plant will increase. C) The rate at which nitrogen is used by the plant will increase. D) The rate at which oxygen is released from the plant will decrease. Show Answer Correct Answer: D) The rate at which oxygen is released from the plant will decrease. 40. Which one of the following statement is incorrect for carboxylating enzyme in C$_{3}$ plants? A) Its old name was carboxydismutase. B) Located in stroma or matrix of chloroplasts. C) Bifunctional nature. D) Can bind with CO$_{2}$ only. Show Answer Correct Answer: D) Can bind with CO$_{2}$ only. 41. If the amount of carbon dioxide increases within the leaf of the plant, the rate of photosynthesis ..... A) Increases. B) Decreases. C) Stays the same. D) None of the above. Show Answer Correct Answer: A) Increases. 42. What is the role of water in photosynthesis? A) Water provides electrons and hydrogen ions and releases oxygen as a byproduct. B) Water is used to absorb sunlight during photosynthesis. C) Water acts as a nutrient for plant growth during photosynthesis. D) Water helps in the formation of glucose without any byproducts. Show Answer Correct Answer: A) Water provides electrons and hydrogen ions and releases oxygen as a byproduct. 43. How does photosynthesis compare with cellular respiration in plants? A) Cellular respiration requires sunlight, but photosynthesis does not. B) Photosynthesis requires sunlight, but cellular respiration does not. C) Carbon dioxide is released during photosynthesis, while oxygen is released during cellular respiration. D) Oxygen is absorbed during photosynthesis, while carbon dioxide is absorbed during cellular respiration. Show Answer Correct Answer: B) Photosynthesis requires sunlight, but cellular respiration does not. 44. Stroma lamella membrane lacks A) PS I only. B) PS I & ETS. C) PS II & NADP reductase. D) PS II only. Show Answer Correct Answer: C) PS II & NADP reductase. 45. Which metal ion is constituent of chlorophyll? A) Zinc. B) Magnesium. C) Copper. D) Iron. Show Answer Correct Answer: B) Magnesium. 46. Which of the following is associated with FNR? A) PS associated with oxygen evolving complex. B) PS I. C) More than one. D) PS II. Show Answer Correct Answer: B) PS I. 47. Which factor would not increase the production of glucose by photosynthesis in plants? A) Freezing temperatures. B) Extra rainfall. C) Increased carbon dioxide levels. D) Increased sunlight exposure. Show Answer Correct Answer: A) Freezing temperatures. 48. Which one of hte following pigmnet functions as reaction centre in photosynthesis? A) Chlorophyll a. B) Xanthophylls. C) Carotene. D) All the above. Show Answer Correct Answer: A) Chlorophyll a. 49. Photosynthesis occurs in: A) Humans. B) Animals. C) Mitochondria. D) Chloroplasts. Show Answer Correct Answer: D) Chloroplasts. 50. Which of the following was used in half leaf experiment by Mohl? A) NaOH. B) KCl. C) NaCl. D) KOH. Show Answer Correct Answer: D) KOH. 51. What is the primary function of photosynthesis? A) To release oxygen as a waste product. B) To provide energy for cellular respiration. C) To absorb carbon dioxide from the atmosphere. D) The primary function of photosynthesis is to convert light energy into chemical energy in the form of glucose. Show Answer Correct Answer: D) The primary function of photosynthesis is to convert light energy into chemical energy in the form of glucose. 52. An important part of the light reaction that synthesises ATP. It relies on a concentration gradient of protons across the thylakoid membrane A) Primary electron acceptor. B) Calvin Cycle. C) Chemiosmosis. D) Electron Transport Chain. Show Answer Correct Answer: C) Chemiosmosis. 53. Where does the Calvin cycle take place? (pick the most accurate answer) A) Stroma of the chloroplast. B) Bundle sheath cells. C) Thylakoid membrane. D) Mesophyll cells. Show Answer Correct Answer: A) Stroma of the chloroplast. 54. Why does the rate of photosynthesis decrease at high temperatures? A) Enzymes are denatured. B) Enzymes do not have enough kinetic energy. C) All the above. D) None of the above. Show Answer Correct Answer: A) Enzymes are denatured. 55. How are leaves adapted to maximise photosynthesis? A) Thick and small. B) Wide and flat. C) Wide and thick. D) Flat and small. Show Answer Correct Answer: B) Wide and flat. 56. Ferrodoxin (Fd) is a A) Non-heme iron protein. B) Heme iron protein. C) Copper containing protein. D) None of the above. Show Answer Correct Answer: A) Non-heme iron protein. 57. What happens during the light phase of photosynthesis? A) ADP is hydrolysed and NADPH oxidised. B) ADP is phosphorylated and NADP reduced. C) ATP is hydrolysed and NADPH oxidised. D) ATP is hydrolysed and NADP reduced. Show Answer Correct Answer: B) ADP is phosphorylated and NADP reduced. 58. Why is the epidermis covered with a waxy layer? A) To keep in moisture. B) To keep it warm. C) To attract insects. D) To collect sunlight. Show Answer Correct Answer: A) To keep in moisture. 59. Where do plants get the energy for photosynthesis to take place? A) Bee pollination. B) The sun. C) Chlorophyll. D) Nutrients in the soil. Show Answer Correct Answer: B) The sun. 60. What is the purpose of a plants' leaves? A) To bring in water from the soil. B) To collect sunlight & make food. C) To look pretty. D) To attract insects. Show Answer Correct Answer: B) To collect sunlight & make food. ← PreviousNext →Related QuizzesScience QuizzesClass 11 QuizzesClass 11 Biology Chapter 13 Photosynthesis In Higher Plants Quiz 1Class 11 Biology Chapter 13 Photosynthesis In Higher Plants Quiz 2Class 11 Biology Chapter 13 Photosynthesis In Higher Plants Quiz 3Class 11 Biology Chapter 13 Photosynthesis In Higher Plants Quiz 5Class 11 Biology Chapter 13 Photosynthesis In Higher Plants Quiz 6Class 11 Biology Chapter 13 Photosynthesis In Higher Plants Quiz 7Class 11 Biology Chapter 13 Photosynthesis In Higher Plants Quiz 8Class 11 Biology Chapter 13 Photosynthesis In Higher Plants Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books