This quiz works best with JavaScript enabled. Home > Cbse > Class 11 > Science > Biology > Class 11 Biology Chapter 13 Photosynthesis In Higher Plants – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Biology Chapter 13 Photosynthesis In Higher Plants Quiz 7 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In chemiosmosis in mitochondria, protons flow from the intermembrane space into the matrix, whereas in chemiosmosis in chloroplasts, protons flow from A) Stroma to the thylakoid space. B) Stroma into the cytosol. C) Intermembrane space to the stroma. D) Thylakoid space to the stroma. Show Answer Correct Answer: D) Thylakoid space to the stroma. 2. The pigment which lacks both phytol tail & mg . A) Phycobilins. B) Chlorophyll c. C) Chlorophyll d. D) Carotenoids. Show Answer Correct Answer: A) Phycobilins. 3. Why are C$_{4 }$plants able to carry out photosynthesis efficiently? A) They do not use the Calvin cycle during photosynthesis. B) They use PEP carboxylase to fix carbon dioxide before entering the Calvin cycle. C) They are adapted to cold climates and absorb CO2 efficiently. D) They conserve water efficiently. Show Answer Correct Answer: B) They use PEP carboxylase to fix carbon dioxide before entering the Calvin cycle. 4. Oxygen becomes attached to RuBP during ..... A) Calvin-Benson Cycle. B) Photorespiration. C) C4 pathway. D) C3 pathway. Show Answer Correct Answer: B) Photorespiration. 5. In our photosynthesis lab, what data led us to believe that photosynthesis occurred? A) Light intensity. B) Oxygen produced. C) Sugars produced. D) Total Floating Leaf Discs. Show Answer Correct Answer: D) Total Floating Leaf Discs. 6. Which of the following statement is true for light reaction? A) It is also known as bio-chemical phase. B) It is directly driven by light. C) It releases lot of heat and light after reaction. D) It occurs in darkness too. Show Answer Correct Answer: B) It is directly driven by light. 7. Carbon dioxide enters plant leaves through the ..... A) Cuticle. B) Xylem. C) Stomata. D) Chloroplasts. Show Answer Correct Answer: C) Stomata. 8. The role of water molecule in light dependent reaction is to ..... A) Involve directly in the production of ATP. B) Replace the excited electron of reaction centre molecule in photosystem II. C) Hydrolyse NADP$^{+}$ at the end of the electron transport chain. D) Involve directly in Calvin cycle. Show Answer Correct Answer: B) Replace the excited electron of reaction centre molecule in photosystem II. 9. Which of these conditions would decrease the rate of photosynthesis in a plant? A) Above average precipitation. B) Changing the daylight hours from 14 hrs to 10 hrs. C) Changing the CO$_{2}$ concentration from 380 ppm to 410 ppm. D) All of these choices. Show Answer Correct Answer: B) Changing the daylight hours from 14 hrs to 10 hrs. 10. Cyclic photophosphorylation differs from non-cyclic photophosphorylation in that ..... is not made from the process. A) G3P. B) NADH. C) NADPH. D) ATP. Show Answer Correct Answer: C) NADPH. 11. Why do plants perform cellular respiration? A) To release sugars that can be converted into energy. B) To release energy from sugars. C) To create energy from sugars. D) To create sugars that can be converted into energy. Show Answer Correct Answer: B) To release energy from sugars. 12. Which statement best describes plants? A) Plants feed on dead animals to gain energy. B) Plants have the ability to produce their own food. C) Plants must eat other plants or animals to survive. D) Plants must be fed by farmers. Show Answer Correct Answer: B) Plants have the ability to produce their own food. 13. What is an example of a nonvascular plant? A) Giant redwood tree. B) Duckweed. C) Moss. D) Cactus. Show Answer Correct Answer: C) Moss. 14. What is the food manufacturing process in plants? A) Photosynthesis. B) Glucose. C) Respiration. D) Chlorophyll. Show Answer Correct Answer: A) Photosynthesis. 15. Etiolated plants are formed due to lack of A) Light. B) Fe. C) Hg. D) Mg. Show Answer Correct Answer: A) Light. 16. Shane is studying the effect of water on photosynthesis rates, what organism would he most likely use in his experiment? A) Corn. B) Caterpillars. C) Bacteria. D) Fungus like a mushroom. Show Answer Correct Answer: A) Corn. 17. Chlorophyll a has molecular weight of A) 907. B) 911. C) 893. D) None of the above. Show Answer Correct Answer: C) 893. 18. Why is cellular respiration important to living organisms? A) It circulates water and nutrients throughout plants and animals. B) It breaks down sugar to provide organisms with energy. C) It allows organisms to create food without sunlight. D) It creates and stores food for later use. Show Answer Correct Answer: B) It breaks down sugar to provide organisms with energy. 19. Which molecule is the primary energy carrier in cells that is produced during photosynthesis? A) NADPH. B) FADH2. C) GTP. D) ATP. Show Answer Correct Answer: D) ATP. 20. This part of the plant acts like an "elevator" carrying nutrients to the plant. A) Flower. B) Roots. C) Leaves. D) Stem. Show Answer Correct Answer: D) Stem. 21. What might it mean if a stem is drooping? A) The plant is about to lose its leaves. B) The plant needs more vitamins. C) The plant needs water. D) The plant is going to turn red. Show Answer Correct Answer: C) The plant needs water. 22. Where in the plant does photosynthesis take place? A) Leaves. B) Seeds. C) Flower. D) Roots. Show Answer Correct Answer: A) Leaves. 23. Describe the role of ATP and NADPH in photosynthesis. A) ATP is a waste product of photosynthesis. B) NADPH is used to absorb sunlight during photosynthesis. C) ATP provides energy, while NADPH provides reducing power in photosynthesis. D) ATP and NADPH are both used to transport oxygen in plants. Show Answer Correct Answer: C) ATP provides energy, while NADPH provides reducing power in photosynthesis. 24. Animals are consumers, meaning they need to eat food for energy because they cannot make their own. Which energy transformation is taking place when an animal eats food so it can keep warm? A) Mechanical to thermal. B) Mechanical to radiant. C) Chemical to thermal. D) Radiant to chemical. Show Answer Correct Answer: C) Chemical to thermal. 25. The chlorophylls usually show A) Phosphorescence. B) Fluoroscence. C) Both. D) None of the above. Show Answer Correct Answer: B) Fluoroscence. 26. How is photosynthesis beneficial to animals? A) Provides animals with energy after animals eat plants. B) Provides oxygen for animals to breathe. C) Removes carbon dioxide from the atmosphere. D) All the options are correct. Show Answer Correct Answer: D) All the options are correct. 27. If a plant receives more carbon dioxide, what happens to the rate of photosynthesis? A) Increases. B) Decreases. C) Stays the same. D) None of the above. Show Answer Correct Answer: A) Increases. 28. Double carboxylation with spatial difference is characteristic of A) Triticum. B) Saccharum. C) Bryophyllum. D) Pisum. Show Answer Correct Answer: B) Saccharum. 29. Who proved that vegetation purifies the air impured by burning of candle- A) De Saussure. B) Sachs. C) Joseph Priestley. D) Von Mayr. Show Answer Correct Answer: C) Joseph Priestley. 30. Why are C$_{4}$ plants able to photosynthesize with no apparent photorespiration? A) They do not participate in the Calvin cycle. B) They use PEP carboxylase to initially fix CO$_{2.}$. C) They are adapted to cold, wet climates. D) They conserve water more efficiently. Show Answer Correct Answer: B) They use PEP carboxylase to initially fix CO$_{2.}$. 31. Plants need carbon dioxide from their environment to produce glucose during which stage of photosynthesis? A) The light-independent stage (The Calvin Cycle). B) The electron transport chain. C) ATP formation. D) The light-dependent stage. Show Answer Correct Answer: A) The light-independent stage (The Calvin Cycle). 32. The rate of photosynthesis is affected by all of the following except A) Light intensity. B) The amount of salt. C) The availability of water. D) Temperature (enzymes). Show Answer Correct Answer: B) The amount of salt. 33. Photosynthesis can only occur in organism that has? A) Cell wall. B) Chloroplast. C) Vacuole. D) Epiderm. Show Answer Correct Answer: B) Chloroplast. 34. Which action would most likely increase the rate of photosynthesis in a plant? A) Removing the soil the plant is growing in. B) Moving the plant to a shaded area. C) Cutting off most of the plant's leaves. D) Moving the plant to a sunny area. Show Answer Correct Answer: D) Moving the plant to a sunny area. 35. In C$_{2}$ (photorespiration) cycle, RUBISCO utilizes: A) CO$_{2}$. B) O$_{2}$. C) Inorganic phosphate. D) NADPH$_{2}$. Show Answer Correct Answer: B) O$_{2}$. 36. How many carbon atoms does 3-phosphoglyceric acid (PGA) have? A) 3. B) 5. C) 4. D) 2. Show Answer Correct Answer: A) 3. 37. Which gas leaves a stomata? A) Helium. B) Carbon Dioxide. C) Oxygen. D) Nitrogen. Show Answer Correct Answer: C) Oxygen. 38. Which statement best explains the relationship between consumers and green plants? A) Consumers need the sugars produced by green plants. B) Green plants need the oxygen produced by consumers. C) Green plants need the sugars produced by consumers. D) Consumers need the carbon dioxide produced by green plants. Show Answer Correct Answer: A) Consumers need the sugars produced by green plants. 39. Which of the following events occurs in the light reactions of photosynthesis? A) NADP+ is produced. B) ATP is consumed to yield ADP. C) Carbon dioxide is fixed in organic molecules. D) Light is absorbed and funneled to reaction-center chlorophyll a. Show Answer Correct Answer: D) Light is absorbed and funneled to reaction-center chlorophyll a. 40. In what part of the cell does photosynthesis occur? A) Chloroplast. B) Vacuole. C) Nucleus. D) Epidermis. Show Answer Correct Answer: A) Chloroplast. 41. A scientist observed that during the course of a chemical reaction the number of ATP molecules was reduced. What did the scientist most likely learn from the observation? A) The reaction produced water. B) The reaction required an input of energy. C) The reaction consumed water. D) The reaction caused an output of energy. Show Answer Correct Answer: B) The reaction required an input of energy. 42. What is the compund that plants use to absorb the energy from sunlight? A) Nitrogen. B) Chlorophyll. C) Carbon dioxide. D) H2O. Show Answer Correct Answer: B) Chlorophyll. 43. A student prepares for a five-mile run so she eats a nutritious meal three hours before the run. Which correctly illustrates the transformation of energy from eating the meal to the five mile run? A) Chemical to Mechanical to Thermal. B) Thermal to Mechanic to Chemical. C) Thermal to Mechanic. D) Chemical to Thermal. Show Answer Correct Answer: A) Chemical to Mechanical to Thermal. 44. Why do chloroplasts align themselves along the walls of mesophyll cells? A) To get the optimum quantity of incident light. B) To avoid sunlight. C) To store more water. D) To increase cell size. Show Answer Correct Answer: A) To get the optimum quantity of incident light. 45. What is the primary function of cyclic electron flow? A) To produce additional ATP. B) To produce additional carbon dioxide. C) To produce additional NADPH. D) To produce additional oxygen. Show Answer Correct Answer: A) To produce additional ATP. 46. What is an example of a decomposer? A) Bird. B) Deer. C) Plum. D) Mushroom. Show Answer Correct Answer: D) Mushroom. 47. An alternative pathway that enables certain plants to fix CO$_{2}$ into four carbon compounds A) C$_{4 }$Pathways. B) Carbon fixation. C) Stomata. D) CAM Pathway. Show Answer Correct Answer: A) C$_{4 }$Pathways. 48. The excited electron does not pass on to NADP+ but is cycled back to the PS I complex through the ETC in A) Stroma lamellae. B) Matrix. C) Granal membrane only. D) Thylakoid lumen. Show Answer Correct Answer: A) Stroma lamellae. 49. What is the role of chlorophyll? A) Chlorophyll's job in a plant is to absorb light. B) Chlorophyll A's central role is as an electron donor in the electron transport chain. C) Chlorophyll B's role is to give organisms the ability to absorb higher frequency blue light for use in photosynthesis. D) All of the above. Show Answer Correct Answer: D) All of the above. 50. The first acceptor of electrons from an excited chlorophyll molecule of photosynthesis II is A) Quinone. B) Cytochrome. C) Iron sulphur protein. D) Ferrodoxin. Show Answer Correct Answer: A) Quinone. 51. Primary carboxylating enzyme in C$_{4}$ plant is found in A) Chloroplast of bundle sheath cells. B) Cytoplasm of bundle sheath cells. C) Cytoplasm of mesophyll cells. D) Chloroplast of mesophyll cells. Show Answer Correct Answer: C) Cytoplasm of mesophyll cells. 52. Photorespiration lowers the efficiency of photosynthesis by preventing A) The fixation of CO2 by Rubisco. B) Oxygen reduction. C) The formation of ATP molecules. D) Carbon dioxide molecules from being produced. Show Answer Correct Answer: A) The fixation of CO2 by Rubisco. 53. Which of these is an example of how a plant can adapt to lose less water? A) Have a waxy layer on the leaves. B) Store water in the petals. C) Have leaves spread out. D) None of the above. Show Answer Correct Answer: A) Have a waxy layer on the leaves. 54. When it is chilly and raining outside, there is no photosynthesis taking place. What is the limiting factor? A) Temperature. B) Rainfall. C) Carbon Dioxide. D) None of the above. Show Answer Correct Answer: A) Temperature. 55. Biosynthetic phase of photosynthesis needs- A) ATP, NADPH$_{2}$, CO$_{2}$ and H$_{2}$O. B) Only CO$_{2}$. C) Only ATP + NADPH$_{2}$. D) Only O$_{2}$. Show Answer Correct Answer: A) ATP, NADPH$_{2}$, CO$_{2}$ and H$_{2}$O. 56. What reactants are needed for the Calvin cycle? A) Carbon dioxide. B) Carbon dioxide, ATP and NADPH2. C) Carbon dioxide and glucose. D) Oxygen and water. Show Answer Correct Answer: B) Carbon dioxide, ATP and NADPH2. 57. Where does glucose exit and water enter the leaf? A) Top of the leaf. B) Veins of the leaf. C) Bottom of the leaf. D) None of the above. Show Answer Correct Answer: B) Veins of the leaf. 58. Which of the following is an example of a HETEROTROPH? A) Lemon Tree. B) Algae. C) Grasses. D) Bush Mouse. Show Answer Correct Answer: D) Bush Mouse. 59. Why can't animals do photosynthesis? A) They are not green. B) Animals don't need energy. C) Animals don't have chloroplasts. D) None of the above. Show Answer Correct Answer: C) Animals don't have chloroplasts. 60. Sunlight is the main source of energy that drives photosynthesis process. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. ← 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 4Class 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 8Class 11 Biology Chapter 13 Photosynthesis In Higher Plants Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books