a) The dark reactions of photosynthesis are alternatively known as the Calvin cycle. The equation of dark reaction may be summed up as: 6RuBP + 6CO 2 + 18ATP + 12NADPH ———→ 6RuBP + C 6 H 12 O 6 +18 ADP +18P +12 NADP. Correct! B. During the dark reaction of photosynthesis (a) Water is split (b) CO2 is reduced to organic compounds (c) Chlorophyll is activated (d) 6 carbon sugar is broken into 3 carbon sugar (e) None 11. In the reduction stage of Calvin cycle, phosphoglyceric acid is reduced to phosphoglyceraldehyde-3-phosphate by ___? Photosystems are the protein complexes involved in photosynthesis. The “Dark” Reactions • Reductive conversion of CO 2 into carbohydrates • Process is powered by ATP and NADPH (formed during the light reactions of photosynthesis) TheCO 2 fixation pathway has several names: •The reductive pentose phosphate (RPP) pathway. C. Organic reaction. A molecule that absorbs light of a specific wavelength in the visible region is called pigment. In photosynthesis the role of chlorophyll is as an inhibitor in the reaction as one of the reactants to convert light energy into chemical energy as a catalyst in the reactions of carbon dioxide and water 7. (1) If both A and R are True and the R is a correct explanation of the A. Also, mention the process involved in each of these steps. Photosynthesis in Higher Plants Class 11 MCQs Questions with Answers. The gas produced duriong photosynthesis is oxygen. The seat of dark reaction of photosynthesis is . An essential process connected with photosynthesis is a) Synthesis of glucose b) Photolysis of water c) Photophosphorylation d) Breakdown of glucose 21. Dark reaction is also called carbon-fixing reaction. Answer : The difference is given below. 5. Photosynthesis MCQ (Multiple Choice Questions and Answers) Q1. B. Synthesis reaction. 60. Photosynthesis ICSE Class-10 Concise Selina Biology Solutions Chapter-6. Have a question about how to do something? How much energy is utilized in the synthesis of one gram mole of glucose 673 kcal 686 kcal 666 kcal 696 kcal Answer: 2 Q2. C . Ans. 4 carbons. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. Be the first to write the explanation for this question by commenting below. In C 4 pathway (A) O 2 combine with PGA (B) CO 2 combine with PEP (C) CO 2 combine with RMP (D) All of the above . Answer : Chloroplasts are mainly found in the mesophyll cells located between the upper and lower epidermis of the leaves. Photosystem I, reaction centre pigment chlorophyll a has absorption peak at 700nm. C 14 label was used to trace the path of carbon in the dark reaction in C 3 plants by Calvin, Benson and Basham. D. Replacement reaction. Answer. The requirements of Photosynthesis are: Carbondioxide, Water, sunlight and Chlorophyll. The end products of Photosynthesis are: Glucose, Oxygen and Water. Dark Reaction of Photosynthesis (or) Light-independent Reaction. 10. (Light Reaction) Reduction of carbon dioxide to carbohydrates. Photosynthesis and Respiration Multiple Choice Questions and Answers for competitive exams. dark reaction of photosynthesis there is a net gain of ___ PGAL molecule(s)? It is a light-independent process in which sugar molecules are formed from the water and carbon dioxide molecules. 2 carbons. Photosynthesis is the process by which plants, some bacteria, and some protistans use the energy from sunlight to produce sugar, which cellular respiration converts into ATP, the fuel used by all living things.Photosynthesis takes in the carbon dioxide produced by all breathing organisms and reintroduces oxygen into the atmosphere. Each photosystem is characterized by the wavelength of light to which its reaction centre is most reactive. Correct Answer: attachment of CO₂ to a pentose sugar. 7 people answered this MCQ question is the answer among for the mcq Dark reaction in photosynthesis is called so because Light is necessary during photosynthesis for heating opening of stomata evolution of Hydrogen Photolysis of water 8. Question 1. In the dark reaction of photosynthesis: (a) PGAL is formed … Photolysis Photophosphorylation It is a process of splitting of water molecule into 2H+ + 4e- + 1/2 O2 in the … A. Options (a) grana (b) thylakoids (c) stroma (d) intergranary fibres. While answering these Questions you are required to choose any one of the following responses. ... ICSE Class 10th Biology Photosynthesis MCQS. Some questions might require synoptic ... dark, and a leaf from plant Y, which had been kept in the light, were compared by ... C Products of the light independent reaction move from the green zone Photosynthesis is : A. Explanation: No explanation available. 18ATP is required for the synthesis of one molecule of glucose, 6ATP is used for the regeneration of RuBP. Author Rating. 1 Mark Questions Answer : Photophosphorylation is the process of conversion of ADP into ATP during photosynthesis. 58. How many carbon atoms should the initial acceptor molecule in the dark reaction have? Answer: i) SUNLIGHT Chlorophyll of the leaves of the plant trap sunlight and converts them into chemical energy during photosynthesis. b) Ribulose-1,5-bisphosphate carboxylase/oxygenase (rubisco) catalyzes the … In the final step of Calvin cycle, ribulose biphosphate is regenerated from ___ molecules of PGAL? questions (MCQs) on the theme of photosynthesis. These short solved questions or quizzes are provided by … 59. The site of Dark reaction of photosynthesis is a) grana b) stroma c) thaylakoids MBBS and engineering stuffs will also be uploaded. These Photosynthesis Assertion and Reason questions consist of two statements each, printed as “ Assertion ” and “ Reason “. (Dark Reaction by Calvin Cycle) Q4: Mention the conditions for photosynthesis. Explanation: This Video contains most important questions about photosynthesis which comes in different exams. C) Cannot occur during day time done clear. 19. There are two types of photosynthetic processes: Oxygenic photosynthesis and anoxgenic photosynthesis is the most common and is seen in plants, algae and cyanobacteria. Photosynthesis is a redox reaction in which carbon dioxide is reduced to sugars in dark reaction and water is oxidised to release oxygen in light reaction of photosynthesis. Thus photosystem I is also known as P700 So, the correct answer is '700 nm The first step in dark reaction of photosynthesis is . 5 carbons. Chapter 10 Photosynthesis ... split water and release oxygen to the reaction-center chlorophyll B) harvest photons and transfer light energy to the reaction-center chlorophyll C) synthesize ATP from ADP and Pi D) transfer electrons to ferredoxin and then NADPH ... dark to a pH-8 solution. Ask your question here. We Provide Step by Step Answer of Progress Check , MCQs, Very Short Answer Type, Short Answer Type, Long Answer Type Questions and Structured / Applications / Skill Type Questions of Exercise-6 Photosynthesis ICSE Class-10 Concise .Visit official Website CISCE for detail information about … Ans. MCQ on Photosynthesis (Plant Physiology MCQ – 01) Dear Students, Welcome to Plant Physiology MCQ-01 (Photosynthesis).This MCQ set consists of Plant Physiology Multiple Choice Questions from the topic Photosynthesis – The Light and Dark Reactions of Photosynthesis with Answer Key.These questions can be used for the preparation of all the competitive examinations in Biology / Life … Similarly, the various anoxygenic photosynthesis reactions can be represented as a single generalized formula: CO2 + 2H2A + Light Energy → [CH2O] + 2A + H2O Photosynthesis takes place in the chloroplast. Options (a) formation of ATP (b) ionization of water (c) attachment of CO₂ to a pentose sugar (d) excitement of electron of chlorophyll by a photon of light. BANK OF MCQs Download ETEA past papers Chapterwise and yearwise, 100+ FSC Lectures, 10+ top PDF books and BOM free Sunday tests. 6. 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