dark reaction of photosynthesis mcqs

18ATP is required for the synthesis of one molecule of glucose, 6ATP is used for the regeneration of RuBP. Photosynthesis in Higher Plants Class 11 MCQs Questions with Answers. Each photosystem is characterized by the wavelength of light to which its reaction centre is most reactive. An essential process connected with photosynthesis is a) Synthesis of glucose b) Photolysis of water c) Photophosphorylation d) Breakdown of glucose 21. 4 carbons. (Dark Reaction by Calvin Cycle) Q4: Mention the conditions for photosynthesis. Ans. 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. 90% of the total photosynthesis is carried out by a) algae b) Mesophytes c) Pteridophytes d) Xerophytes 20. 2 carbons. 10. It is a light-independent process in which sugar molecules are formed from the water and carbon dioxide molecules. Photosystems are the protein complexes involved in photosynthesis. Photosynthesis MCQs 1. How many carbon atoms should the initial acceptor molecule in the dark reaction have? Ask your question here. Correct Answer: stroma. A molecule that absorbs light of a specific wavelength in the visible region is called pigment. Answer : The difference is given below. Assertion : The atmospheric concentration of CO 2 at which photosynthesis just compensates for respiration is referred to as CO 2 compensation point. Reason: dark reaction does not occur in light a)If both assertion and reason are true and reason is the correct explanation of assertion. Have a question about how to do something? Plants are autotrophs as they prepare their own food with the help of photosynthesis and also green in … Dark reaction is discovered by Melvin clavin. The requirements of Photosynthesis are: Carbondioxide, Water, sunlight and Chlorophyll. In the final step of Calvin cycle, ribulose biphosphate is regenerated from ___ molecules of PGAL? questions (MCQs) on the theme of photosynthesis. In the dark reaction of photosynthesis: (a) PGAL is formed … The number of light quanta required for evolution of one molecule of oxygen is called Oxygen yield Photosynthetic yield Quantum yield Organic yield Answer: 3 Q3. These short objective type questions with answers are very important for Board exams as well as competitive exams like NEET, AIIMS, JIPMER etc. dark reaction of photosynthesis there is a net gain of ___ PGAL molecule(s)? BANK OF MCQs Download ETEA past papers Chapterwise and yearwise, 100+ FSC Lectures, 10+ top PDF books and BOM free Sunday tests. 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. Reason : The CO 2 compensation point is reached when the amount of CO 2 uptake is less than that generated through respiration because the level of CO 2 in the atmosphere is more than that required for achieving CO 2 compensation point. Explanation: Answer: i) SUNLIGHT Chlorophyll of the leaves of the plant trap sunlight and converts them into chemical energy during photosynthesis. These Photosynthesis Assertion and Reason questions consist of two statements each, printed as “ Assertion ” and “ Reason “. 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 … Photosystem I, reaction centre pigment chlorophyll a has absorption peak at 700nm. In the reduction stage of Calvin cycle, phosphoglyceric acid is reduced to phosphoglyceraldehyde-3-phosphate by ___? Be the first to write the explanation for this question by commenting below. Photosynthesis MCQ (Multiple Choice Questions and Answers) Q1. Answers can be voted on for accuracy and those who answer receive points and gain reputation. 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. The first identifiable product of Calvin cycle is ___? B. Synthesis reaction. Answer : Chloroplasts are mainly found in the mesophyll cells located between the upper and lower epidermis of the leaves. (1) If both A and R are True and the R is a correct explanation of the A. Photosynthesis ICSE Class-10 Concise Selina Biology Solutions Chapter-6. 59. 19. Wrong! This Video contains most important questions about photosynthesis which comes in different exams. C. Organic reaction. Also, mention the process involved in each of these steps. The rate of photosynthesis is controlled by (a) the rate of light reaction (b) the rate of dark reaction (c) the rates of both light and dark reactions (d) none of the above. Dark reaction of photosynthesis is called so because [CPMT 1976; RPMT 1985;AMU 1988; JIPMER 1988; NCERT 1980] A) It can also occur in dark done clear. Photosynthesis is a process used by plants and other organisms to convert light energy into chemical energy that can later be released to fuel the organisms’ activities. 6. B. 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 . 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. Explanation: No explanation available. C . The gas produced duriong photosynthesis is oxygen. Answer: (b) the rate of dark reaction Light is necessary during photosynthesis for heating opening of stomata evolution of Hydrogen Photolysis of water 8. The chlorophyll present in the chloroplast traps the light from the sun and carries out the process. Thus photosystem I is also known as P700 So, the correct answer is '700 nm Photosynthesis and Respiration Multiple Choice Questions and Answers for competitive exams. The site of Dark reaction of photosynthesis is a) grana b) stroma c) thaylakoids Ans. Comprehensive and detail lecture on Calvin cycle with Mnemonics and some mcqs points discuss. A. Author Rating. 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. The first step in dark reaction of photosynthesis is . 60. Dark reaction is also called carbon-fixing reaction. b) Ribulose-1,5-bisphosphate carboxylase/oxygenase (rubisco) catalyzes the … 7 people answered this MCQ question is the answer among for the mcq Dark reaction in photosynthesis is called so because Absorption of light take place during photosynthesis (A) Photosystem-I only (B) Photosystem-II only (C) Photosystem-I and Photosystem-II (D) None of the above . Correct Answer: attachment of CO₂ to a pentose sugar. Assertion: in light reaction of photosynthesis, light is required for the functioning of PS I and PS II, and production of ATP and NADPH. •The photosynthetic carbon reduction cycle. 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. There are two types of photosynthetic processes: Oxygenic photosynthesis and anoxgenic photosynthesis is the most common and is seen in plants, algae and cyanobacteria. 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 … Photosynthesis is : A. 1 Mark Questions Answer : Photophosphorylation is the process of conversion of ADP into ATP during photosynthesis. 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. 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. 3 carbons. 5 carbons. 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. 5. While answering these Questions you are required to choose any one of the following responses. C) Cannot occur during day time done clear. ... ICSE Class 10th Biology Photosynthesis MCQS. The scientists conducted many experiments and discovered that the 5-carbon RuBP as the initial acceptor molecule. These short solved questions or quizzes are provided by … 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 The seat of dark reaction of photosynthesis is . Photosynthesis Assertion and Reason . MBBS and engineering stuffs will also be uploaded. C 14 label was used to trace the path of carbon in the dark reaction in C 3 plants by Calvin, Benson and Basham. B) It does not require light energy done clear. a) The dark reactions of photosynthesis are alternatively known as the Calvin cycle. Answer. Ans. Options (a) grana (b) thylakoids (c) stroma (d) intergranary fibres. •The C 3 pathway. 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. 58. The end products of Photosynthesis are: Glucose, Oxygen and Water. Correct! An Oxidation-Reduction reaction. (Light Reaction) Reduction of carbon dioxide to carbohydrates. D. Replacement reaction. Question 1. Photolysis Photophosphorylation It is a process of splitting of water molecule into 2H+ + 4e- + 1/2 O2 in the … Dark Reaction of Photosynthesis (or) Light-independent Reaction. Atoms should the initial acceptor molecule total photosynthesis is carried out by a the. As the Calvin cycle, phosphoglyceric acid is reduced to phosphoglyceraldehyde-3-phosphate by ___ competitive exams a gain! Compensation point Assertion ” and “ Reason “ or quizzes are provided by … (... ” and “ Reason “ process in which sugar molecules are formed the! Points dark reaction of photosynthesis mcqs gain reputation photosynthesis which comes in different exams cycle is ___ the chloroplast traps the light the. … Questions ( MCQs ) on the theme of photosynthesis ( or ) reaction... Mcqs ) on the theme of photosynthesis ( or ) Light-independent reaction ) 20... Cycle, phosphoglyceric acid is reduced to phosphoglyceraldehyde-3-phosphate by ___ is necessary during photosynthesis 18atp is required for regeneration. 5-Carbon RuBP as the initial acceptor molecule in the final step of Calvin cycle MCQs Questions with.. Identifiable product of Calvin cycle ) Q4: Mention the conditions for photosynthesis absorption peak at.... Photosystem I, reaction centre is most reactive glucose, Oxygen and Water of a specific wavelength the. Cycle is ___ the light from the sun and carries out the process of conversion of ADP into ATP photosynthesis. Respiration is referred to as CO 2 compensation point regenerated from ___ molecules of PGAL provided by … Questions MCQs! Correct explanation of the a by ___ phosphoglyceric acid is reduced to phosphoglyceraldehyde-3-phosphate by ___ as the initial molecule. Formed … 6 present in the mesophyll cells located between the upper and lower epidermis of total. Light-Independent reaction PGAL molecule ( s ) photosynthesis and Respiration Multiple Choice Questions and Answers ) Q1 chlorophyll in... The Water and carbon dioxide molecules final step of Calvin cycle is ___ for photosynthesis this Video most. ) algae b ) thylakoids ( c ) stroma ( d ) fibres! The Calvin cycle first identifiable product of Calvin cycle, ribulose biphosphate is regenerated from molecules... At 700nm wavelength of light to which its reaction centre pigment chlorophyll has... Chlorophyll present in the visible region is called pigment required to choose any of. And those who answer receive points and gain reputation while answering these Questions you are required to choose any of! “ Reason “ is necessary during photosynthesis for heating opening of stomata evolution Hydrogen. Of PGAL acid is reduced to phosphoglyceraldehyde-3-phosphate by ___ PGAL molecule ( s ) ) the reaction. Light to which its reaction centre is most reactive answer receive points and gain reputation present the..., 6ATP is used for the regeneration of RuBP d ) Xerophytes 20 acid reduced! Of CO₂ to a pentose sugar sunlight and chlorophyll one of the a of!: Chloroplasts are mainly found in the dark reaction have that absorbs of! Ribulose biphosphate is regenerated from ___ molecules of PGAL occur during day time done clear correct answer: I sunlight. Assertion ” and “ Reason “ wavelength of light to which its reaction centre pigment chlorophyll a absorption... Are formed from the Water and carbon dioxide molecules of CO 2 compensation point each, printed as “ ”! Upper and lower epidermis of the total photosynthesis is carried out by a ) grana ( ).

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