Do photosynthetic reactions such as dark reactions require light? Introduction to Biology. Q.6. 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. Succulents are known to keep their stomata closed during the day to check transpiration. Is it a photosynthetic pigment? NCERT Exemplar Class 11 Biology is very important resource for students preparing for XI Board Examination. A.7. b) It involves the breakdown of glucose and is a catabolic process. Photorespiration is related to C3 cycle, where plants lose carbon dioxide fixation because of the increase in the concentration ion of oxygen and modification in the nature of the activity of RuBP carboxylase oxygenase. KCSE Revision Questions and Answers. Q.2. Dark reactions are light-independent reactions. c) Write the end products of this process. Does moonlight promote photosynthesis? Furthermore, solutions are also provided for these questions, with special emphasis on ease-of-study. Q.10. Biology Notes Form 1 - Biology Form 1 Notes - Form 1 Biology Notes. Biology quiz with answers. Why do we believe chloroplast and mitochondria to be semi-autonomous organelle? Does photosynthesis occur in leaves only? At which wavelength do they show peaks? In the presence of enzyme ATP synthase, it is coupled with the movement of ions across the membrane and formation of ATP synthesis. d. oxygen and water. Q.9. Tomatoes, carrots and chillies are red in colour due to the presence of one pigment. Respiration uses the end product of the photosynthesis(glucose in the form of food). In the diagram shown below label A, B, C. What type of phosphorylation is possible in this? Learn the ones you get in case wrong. A.4. Answer: The entire living community and non-living factors of the environment together from the ecosystem. A.3. Plants make food using photosynthesis. In the figure given below, the black line (upper) indicates action spectrum for photosynthesis and the lighter line (lower) indicates the absorption spectrum of chlorophyll a, answer the followings: a. During day time, the succulent plants have to shut their stomata as they grow in dry and xeric conditions, for prevention of water loss during transpiration, the gaseous exchange does not take place. 1. Under what conditions are C4 plants superior to C3? Observe the diagram and answer the following. Do they receive qualitatively and quantitatively the same light? NADPH. Q.7. Where in the cell do each of these take place? Also Access Class 11 Biology Sample papers, 1) Which light range is most effective in photosynthesis? When CO2 is added to PEP, the first stable product synthesised is: a. Q.9. How? c) Raw material – oxygen and glucose molecule, which are products of photosynthesis. c. What difference do you think are there in their leaf anatomy? Why is RuBisCo enzyme the most abundant enzyme in the world? They are related. Lessons from Content Marketing World 2020; Oct. 28, 2020. At 2 – It is the structure of extracellular DNA that is responsible for replication of chloroplasts when necessary in the photosynthesizing cells. In the presence of light, plants carry out photosynthesis. Q.1. Can they be administered with supplements to maintain survival or growth? 3) What are the two functional groups in an ecosystem? It breaks down the proton gradient to release energy i.e. b) The process releases molecular oxygen as a by-product of photosynthesis and is an important source of oxygen in the air, for living entities on earth. plants, chloroplasts are present only in mesophyll cells. Start studying Photosynthesis questions. Photosynthesis MCQ (Multiple Choice Questions and Answers) Q1. A by-product of splitting water is O2. Photosynthesis Multiple Choice Questions & Answers important for competitive exams. What are the important events and end products of light reaction? the molecule that is an important energy carrier in a cell iv. Answer: Autotrophs and heterotrophs. All the enzymes act at an optimum temperature. The process of photosynthesis is an enzyme specific process. Hence the rate is higher in the red and blue regions. How can we derive an absorption spectrum for any substance? Justify. Based on important multiple choice questions for all competitive exams and Biology Quiz. ATPase enzyme consists of two parts. Hence plants have adapted to fix CO2 in the form of malic acid during night time. Biology syllabus. Only one type of chloroplasts is present. They aid in accumulating solar radiations and passing them onto chlorophyll-a. How are short plants growing below thick canopies and receiving filtered light able to carry out photosynthesis in tropical rain forests? How do they provide advantage over the structure of C3 plants. Complete the flow chart for cyclic photophosphorylation of the photosystem-I. What are the important events and end products of the light reaction? A process is occurring throughout the day, in ‘X’ organism. Name the pigment. Is the pigment a photosynthetic pigment? 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. If a green plant is kept in dark with proper ventilation, can this plant carry out photosynthesis? Here we have covered Important Questions on Photosynthesis in Higher Plants for Class 11 Biology subject. Can we perform girdling experiments on monocots? Photosynthesis is a physio-chemical process which uses light energy to produce organic compounds. They are used to fix CO2 and to form a glucose molecule. Q.11.Explain why is the colour of a leaf in the dark changes? A.4. Water, ATP and carbon dioxide are evolved during the process and is not a light-dependent process. a. Synthesis of ATP & NADPH __________________________, b. Photolysis of water __________________________, d. Synthesis of sugar molecule __________________________, e. Synthesis of starch __________________________. Q.5. Name the products used to drive the dark reaction that is formed during the light reaction of photosynthesis. Some of these terms/chemicals are associated with the C. Where is NADP reductase enzyme located in the chloroplast? b) The inner side of the thylakoid membrane. Is this structure present in animal cell or plant cell? Suppose Euphorbia and Maize are grown in the tropical area. Where does this reaction take place in plants? NCERT Exemplar Class 11 Biology is very important resource for students preparing for XI Board Examination.Here we have provided NCERT Exemplar Problems Solutions along with NCERT Exemplar Problems Class 11. b) ATP molecules. Q.3. CBSE Important Questions for Class 11 Biology, NCERT Important Questions for Class 11 Biology, NCERT Solutions for Class 8 Sanskrit Chapter 11 सावित्री बाई फुले, NCERT Solutions for Class 12th Macroeconomics : Chapter 6 – Open Economy Macroeconomics, Class 11 Important Questions for Biology - Respiration in Plants. Instead of producing, it consumes energy. Also, they could find some of these questions in the examination. Cells are participating in this process. So, solving them will boost the confidence level of students and help them in scoring high marks. Do reactions of photosynthesis called, as ‘Dark Reaction’ need light? A.11. Can anything be given as supplement to maintain its growth or survival? Question from very important topics are covered by NCERT Exemplar Class 11.. You also get idea about the type of questions and method to answer in your Class 11th examination. Happy learning! To which conditions are those plants better adapted? c. sugar and oxygen. Q.6. b. Through various processes, carbon dioxide is reduced to glucose which does not require light. a) Is this composition present in a plant cell or animal cell? Answer the following questions based on the equation given below: a) Where in plants does this reaction occur? Q.2. While doing so, this pigment itself absorbs maximum radiations at regions – blue and green. Can these be passed on to the progeny? Cyanobacteria and some other photosynthetic bacteria don’t have chloroplasts. Green plants synthesize their own food which is utilized by them and other organisms dependant on them, through a process known as photosynthesis. To get fastest exam alerts and government job alerts in India, join our Telegram channel. How? The light reaction produces the reducing power i.e., the ATP and NADPH2 molecules which are utilized in the dark reaction. Which metal ion is a constituent of chlorophyll? The leaves are designed in such a way that they capture sunlight and convert solar energy into chemical energy effectively. 2) Which form of science dealing with the study of structural and cultural traits of human beings? In the process, carbon dioxide and water are released which photosynthesis uses to produce more sugars. Free PDF download of Important Questions with Answers for CBSE Class 11 Biology Chapter 3 - Plant Kingdom prepared by expert Biology teachers from latest edition of CBSE(NCERT) books. How do plants get energy? We cannot reach a specific band of the phloem tissues as the monocot stem has vascular bundles scattered all over the width of the stem. Both processes are dependant on each other. Explain. Example – Tinospora, Trapa. What is the role of this enzyme in proton gradient development? The colour of leaf stored in dark changes from green to pale green or yellow in colour. What can we conclude from the statement that the action and absorption spectrum of photosynthesis overlap? Lesson 4.11: Life Science – Photosynthesis & Respiration H. Turngren, Minnesota Literacy Council, 2014 p.5 GED Science Curriculum SCIENCE Unit 4.11 handout 1 What Is Photosynthesis? Q.4. The solutions are provided by our experts, keeping in mind the students’ understanding level. A.8. Because of the presence of chromoplasts in plants, it gives rise to different colours. the liquid inside chloroplasts v. The following are the events: Emission of a pair of electrons due to excitation of chlorophyll molecules, using this energy to form ATP from ADP + Pi, the process is referred to as photophosphorylation, a water molecule is split. Malic acid is a four carbon compounds that stores CO2 which is liberated during the day within the photosynthetic cells. It is an anabolic process and requires enzymes. a. Q.4. How are succulents able to meet their photosynthetic CO2 requirements as they are known to keep their stomata closed during the day to check transpiration? Ontario Grade 11 Practice Exams. What does the action spectrum indicate? Kranz anatomy is absent in the leaves of C3 plants. How are photosynthesis and respiration related to each other? It's an entry to the mid-level quiz, so, try to answer all the ten questions you face. What is the basis for designating C3 and C4 pathways of photosynthesis? Question from very important topics are covered by NCERT Exemplar Class 11. Can girdling experiments be done in monocots? Q.1. The colour of leaf stored in dark changes from green to pale green or yellow in colour. Which pigment acts directly to convert light energy to chemical energy? Biology is brought to you with support from the Our mission is to provide a free, world-class education to anyone, anywhere. During light reaction in photosynthesis the following are formed: Dark reaction in photosynthesis is called so because, The correct sequence of flow of electrons in the light reaction is, a. PSII, plastoquinone, cytochromes, PSI, ferredoxin, b. PSI, plastoquinone, cytochromes, PSII, ferredoxin, d. PSI, plastoquinone, cytochromes, PSII, ferredoxin, The enzyme that is not found in a C3 plant is, The reaction that is responsible for the primary fixation of CO. The stem in some plants such as the Opuntia gets modified and adapts to perform the functions of leaves, be turning thick, succulent and flattened, performing photosynthesis, these structures are referred to as phylloclade. True or false with reason. A.1. Is it correct to say that photosynthesis occurs only in leaves of a plant? A.5. b) Because of the presence of extranuclear DNA, it has the potential to self-replicate. d) Three cell organelles are involved – chloroplast, peroxisome, mitochondria. Start studying Photosynthesis Grade 11 Bio. K.C.S.E Online Revision . c) Write the metabolic processes that are occurring at the places marked as (1) and (2) in the figure. The products of photosynthesis are. In a C3 plant, a light dependent cyclic process is occurring that requires oxygen. The conformational changes occur in the headpiece (F1) of the enzyme. 3) If a green plant is kept in dark with proper ventilation, can this plant carry out photosynthesis? State its role in the proton gradient development. b. Class 11 Biology Important Questions. There is no substitute for consistent practice whether one wants to understand a concept thoroughly or one wants to score better. Q.7. List the location in the cell where the following reactions take place during the process of photosynthesis. Where in the chloroplast is the NADP reductase enzyme located? Here electrons are extracted from water and are known as water splitting centre, and is catalyzed by the Mn+ and Cl– ions. You also get idea about the type of questions and method to answer in your Class 11th examination. In a certain ‘X’ organism, a process is occurring throughout the day in which cells are participating. b) What does the breakdown of proton gradient cause the release of? It is therefore imperative that students must strengthen their fundamentals in Class 11 with Class 11 NCERT Biology important questions with answers to … Give the correct word or term for each of the following: i. the light-independent stage of photosynthesis ii. What is the relationship between photosynthesis and respiration? The test for starch goes as follows: You will need the following: o … Justify. Access answers to several hundred biology questions, carefully explained and easy for you to understand. b. a) It is located on the outer side of the thylakoid membrane. In Priestley’s experiments, what was released by the mint sprig and allowed the candle to burn again? However, they rely upon the products formed during the light reactions (NADPH2 and ATR). Biology MCQ Questions for Class 11 with Answers Pdf Download Practicing NCERT Online Biology MCQ Questions for Class 11 with Answers is one of the best ways to prepare for the CBSE Class 11 exam. How are they arranged in the thylakoid membrane? How do they adapt to carry out photosynthesis under these conditions? What is the significance of this reaction? Start Test: Partial Course Review (missing Chemical Reactions unit) 10 Questions, randomized from 295 overall Pigment lycopene imparts the red colour to them. It creates a gradient for the synthesis of ATR when electrons released are transferred from PS II to PS I through electron carriers. If yes, How? Hence only the rate could vary amongst plants growing in different canopy regions. If no, why not? 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