Plant Physiology MCQ on Photosynthesis Part I-Light Reaction Lecture Notes MCQ Biology Welcome to Plant Physiology MCQ 01 Plant Physiology Quiz on Photosynthesis Part I This question set on Plant Physiology MCQ-01: Photosynthesis Part-I Light Reactions consists of 15 questions in MCQ format. Please select the correct answer and at the end of the test, you have to click on 'SUBMIT' button to see your Score and the Correct Answers. Please click 'NEXT' button to start the quiz... 1. Which of the following monochromatic lights are more suitable for plant growth? Red, far-red Blue, far red Red, blue, far-red Red, green2. Which of the following statement is true regarding the magnesium porphyring ring and the phytol chain of a chlorophyll molecule? Magnesium porphyrin ring is lipophylic whereas phytol chain is hydrophilic Both Magnesium porphyrin and phytol chain is lipophilic Magnesium porphyrin ring is hydrophilic whereas phytol chain is lipophilic Both Magnesium porphyrin and phytol chain is hydrophilic3. Which of the following statements are true about phytochromes?(A). They are photoreceptors sensitive to red and far-red region of the light(B). Two types (Type I and Type II)(C). Type I phytochromes are activated by far-red light(D). Type II phytochromes are activated by red light B, C and D A, and B A, B, C and D A, B and C4. Which mineral ion play important role in the functioning of photosystem II? Manganese Molybdenum Iron Magnesium5. Which of the following statement regarding the photosystem is true? Both PS I and PS II are present in non-sulfur bacteria PS I found in green sulfur bacteria, PS II is found in non-sulfur bacteria. PS I is found in non-sulfur bacteria, PS II is found in green sulfur bacteria Both PS I and PSII are present in Green sulfur bacteria6. What is the correct molecular formula of Chlorophyll-a? C55H70O4N5Mg C55H72O4N5Mg C55H72O5N4Mg C55H70O5N4Mg7. Which of the following statement is true regarding the number of pyrrole rings and the Magnesium atoms in a chlorophyll molecule? One pyrrole ring and 1 Magnesium atom Four pyrrol rings and 1 Magnesium atom Two pyrrole rings and 2 Magnesium atoms Four pyrrole rings and 4 Magnesium atoms8. Plants dissipate excess excitation energy as heat so as to protect from photo‐oxidative damage. The mechanism is known as Photo-inhibition Warburg effect Non ‐Photochemical quenching Photo chemical quenching9. DCMU inhibits photosynthesis at photosystem during: QA → QB Cyt-bf6 → PC QB → Cytbf6 Phe → QA 10. Red-drop occurs at ______ wavelength of light. 680 nm 700 nm 720 nm 650 nm11. The chlorophyll is formed from proto-chlorophyll in the presence of light. For the formation of a chlorophyll molecule from a proto-chlorophyll how many hydrogen atom(s) are required? 3 4 2 112. The first acceptor of electrons from an excited chlorophyll molecule of photosystem II is: Cytochrome Iron-sulphur protein Quinone Ferredoxin13. The process of photosynthesis which leads to the formation of glucose is a type of Reduction Oxidation Fixation Condensation14. The region of visible light which is most useful for photosynthesis is: Violet and Blue Blue and Red Green and Blue Green and Red15. The Oxygen Evolving Complex (OEC) of photosynthesis contains a metalloenzyme core containing _______. Magnesium and Manganese Manganese alone Manganese and Calcium Manganese and IronYou have reached at the End of this Quiz. Please Click 'SUBMIT' button to see your Score and the Correct Answers... Get our Updates on PLANT PHYSIOLOGY in your E-mail Inbox We will not spam your account… Enter your e-mail address Don’t forget to Activate your Subscription…. 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