(a) Thylakoid membranes Photosynthesis (Biology) objective type question bank with 35 questions and answers. They also help to control the loss of water vapour (transpiration). The ___________ help to regulate the movement of … Biology is brought to you with support from the Amgen Foundation. Photosynthesis is a symbiotic relationship between plants and microorganisms and involves photosynthesis, which allows plants to use energy from the sun, and water exchange between the plants and the water in the soil. C. mechanical to electrical. Photosynthesis DRAFT. A. (a) Wheat You may not always spend your time and money to go abroad and get the experience and knowledge by yourself. What is the fluid-filled space that contains enzymes for the light-independent reactions called? By Quizzma Team / Biology. What are the products of photosynthesis? The best known form of photosynthesis is the one carried out by higher plants and algae, as well as by cyanobacteria and their relatives, which are responsible for a major part of photosynthesis in oceans. Which of the following statements is FALSE? most of the palisade cells for photosynthesis are on the underside of leaves many small roots are more efficient than one big root for absorbing nutrients and water if a plant is enclosed in an air tight glass jar in sunlight, the oxygen level will fall and the carbon dioxide level will rise Laura Wodock. We thoroughly check each answer to a question to provide you with the most correct answers. (c) Strengthening of phloem fibres A. heat to electrical. Photosynthesis requires carbon dioxide (CO 2 ), water (H 2 O), and a few other necessary elements. Ans: (a), Ques. the light independent reactions will continue to produce glucose Photosynthesis MCQ (Multiple Choice Questions and Answers) Q1. Photosynthesis takes in the carbon dioxide produced by all breathing organisms and reintroduces oxygen into the atmosphere. Plants release water into the soil to provide the microorganisms with the carbon and oxygen they need to grow. (b) Multilayered epidermis (a) Sun light (b) Red light (c) Blue light (d) Green light Ans: (d) Ques. (a) Sun light water, sunlight, carbon dioxide. c) Starch and Sucrose d) Water. (b) Pyrenoids (b) Independent of light (a) Spongy parenchyma (d) Both (a) and (b) Ans: (a), Ques. Ans: (d), Related: Biotechnology and its Applications class 12 Biology Objective Questions, Ques. (a) Mitochondria When do plants photosynthesis? Quizzma is a free online database of educational quizzes and test answers. Ans: (b), Related: Radioactivity (Chemistry) question paper, Ques. A. Simply put, photosynthesis is the process by which plants feed. Photosynthesis is the process in which plants, using sunlight, create sugars by combining carbon dioxide with water. Cellular respiration. Core metal of chlorophyll is Restart Quiz! Loading of phloem means Use the “Photosynthesis: bounce quiz” at the eChalk website to help you answer these questions. In test after test, mass loss by soil, water, and even carbon dioxide didn’t measure up to the mass gained by a growing plant. Special feature of C4 plants is (c) Ribosomes 1. a. water and carbon dioxide. (b) Separation of phloem parenchyma (b) Bundle sheath cells Photosynthesis and Respiration Quiz #1. Next lesson. What color is chlorophyll? Browse from thousands of Photosynthesis questions and answers (Q&A). Which of the following is least effective in photosynthesis? (d) Pouring of sugar into phloem Ans: (a), Ques. (d) Vascular tissue Found a mistake? D)There is a net consumption of ATP in cellular respiration and a net production of ATP in photosynthesis. Black Huge surface area (Correct Answer) B. (c) Oxidative phosphorylation chemiosmosis glycolysis calvin cycle krebs cycle . They are the first stage of photosynthesis. Allow oxygen to diffuse into leaves C. Allow carbon dioxide to diffuse into leaves (Correct Answer), 10. Ans: (c), Ques. Microorganisms, in turn, use the carbon and oxygen to produce the sugars that they then transfer to the plants. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Carbon dioxide and oxygen C. Glucose and oxygen, 5. Quiz Answers; Photosynthesis Chapter 10 #41-60 Test Answers; Photosynthesis Chapter 10 #41-60 Test Answers. SURVEY . Condition favouring cyclic photophosphorylation is (b) Maltose Become a part of our community of millions and ask any question that you do not find in our Photosynthesis Q&A library. A. (a) Adenine triphosphate (d) Mesosomes d. oxygen and water. (c) Kranz anatomy Thinking about photosynthesis and respiration in plants, which statement is correct: (tick one answer) a) Photosynthesis is the opposite of respiration. Photosynthesis is carried out by many different organisms, ranging from plants to bacteria. ALL animals existed on Earth before plants did. (c) Starch Ans: (a), Related: Work and energy questions (practice), Ques. A. … Mitochondria Chloroplast Chlorophyll Cellular Membrane Flagella 2. 1. The Quiz. Biology is brought to you with support from the Amgen Foundation. They utilize the energy stored in ATP and NADPH. Ans: (c), Ques. Quiz Questions 1. Could also The end product(s) of photosynthesis in plants are oxygen plus: is related to Quiz on Photosynthesis. all organisms carry out photosynthesis. Photosynthesis is the process used by plants, algae and certain bacteria to harness energy from sunlight and turn it into chemical energy. (c) Adenosine triphosphate A. The law of limiting factors for photosynthesis was enunciated by Getting Better Understanding Photosynthesis. (d) Blackman The practice questions on the quiz will test you on the reactants to photosynthesis, the purpose of photosynthesis, and the equation for photosynthesis. Q. Inputs of photosynthesis. Photosynthesis: Overview of the light-dependent reactions (Opens a modal) Light and photosynthetic pigments (Opens a modal) The light-dependent reactions (Opens a modal) Practice. Photosynthesis Quiz. oxygen, glucose. Ques. Carbon dioxide and water B. Glucose and oxygen (Correct Answer) C. Lactic acid, 2. In the chloroplasts (Correct Answer)… (d) Carbon dioxide is reduced and water oxidised 2. Photosynthesis review. Maximum starch is manufactured by A. Palisade cells (Correct Answer) B. Root hair cells C. Red blood cells, 8. Home » Medical Sample papers » Photosynthesis Quiz. Group: Biology Biology … Ans: (b), Ques. First name: Last name . (c) Krebs That’s the only way we can improve. What organelle is responsible for photosynthesis in plants and algae? (d) Anaerobic and low light intensity Photosynthesis Quiz. You got: % Correct. In the chloroplasts (Correct Answer) B. It is important that students of GCSE Biology understand photosynthesis and this quiz will help them to revise. Lots of chloroplasts C. Have no cell wall. Photosynthesis quiz 12. Plants purify air during (a) Phosphorylation (d) Nonmovement of water. Please enter your name. A. (d) 400-500 nm and 600-700 nm Kranz anatomy occurs in Which of the following is NOT a produce of the light dependent reaction? Breaking down photosynthesis stages. If the water was not present, the microorganisms would die, Your email address will not be published. 12. Ans: (c), Ques. MOST animals and plants existed at the same time. The carbon dioxide is removed from the water when the plants are harvested. (d) Hindered by light Photosynthesis and Respiration Quiz #1. Photosynthesis: Calvin cycle (Opens a modal) Start studying Cellular Respiration & Photosynthesis Quiz. We thoroughly check each answer to a question to provide you with the most correct answers. Blue C. Green (Correct Answer), 3.Where does photosynthesis take place? Carbon dioxide and oxygen. Start My Quiz! About This Quiz & Worksheet. Which element is required photosynthetic evolution of oxygen ? (a) Leaves Free online quizzes and answers for students. This is the currently selected item. Quiz … (a) Sun light (b) Red light (c) Blue light (d) Green light Ans: (d) Ques. (b) Stoppage of photosynthesis Misconception – Photosynthesis is the opposite of respiration – 7. (d) Lysosomes (b) Plastoglobules Dark reactions of photosynthesis occur in Stop carbon dioxide diffusing into leaves B. Which of the following is least effective in photosynthesis? Which of the following occurs in both photosynthesis and respiration? carbon dioxide, water, oxygen. b. sugar and water. Found a mistake? Ans: (d), Related: Acceleration Due to Gravity (Physics) Question Papers and Answer, Ques. d) Respiration for … (d) Spongy cells (a) Phosphoglycolate (c) Nonmovement of minerals BIOL 101 -- Quiz 6 -- Photosynthesis 1. Water B. b) Starch . Carbon dioxide and water (c) Zn Carbon dioxide and water. Complete girdling ultiamtely kills the tree due to I will be checking the times so please do not just submit to see the answers! It can be used as an open note quiz or traditional quiz. Ans: (b), Ques. (c) Blue light During the night only C. During the day only, 7. glucose water P680 ATP. (b) Mg Photosynthesis Practice Quiz. Which of the following is least effective in photosynthesis? Your email address will not be published. Please enter your name. (c) Transpiration It wasn’t until Joseph Priestley’s experiments a century later that scientists began to suspect sunlight as the major contributor to a plant’s growth. About This Quiz & Worksheet. – source, 1. b 3. The light-dependent reactions. Chlorophyll is a pigment that is used in the process of photosynthesis, and this quiz/worksheet duo will help test your knowledge of … It is a breaking down process. Some of the worksheets for this concept are Illuminating photosynthesis work answers, Photosynthesis quiz, Photosynthesis review work, National center for case study teaching in science killing, Photosynthesis diagrams work, Photosynthesis starts with work answers, Photosynthesis … Breaking down photosynthesis stages. Breaking down photosynthesis stages. Dark reactions of photosynthesis occur in (a) Granal thylakoid membranes (b) Stromal lamella … Biology. Quiz: Cellular Respiration. Let’s take a look at one of the most fundamental topics in all of the scientific study of biology – photosynthesis! glycolysis can occur with or without oxygen glycolysis occurs in the mitochondria glycolysis is the first step in both aerobic and … Learn more about Quia: Create your own activities What molecule absorbs sunlight for photosynthesis? Take this as many times as needed. The questions are written so that the incorrect answers are plausible distractors based on common errors or misconceptions. Next lesson. Respiration and Photosynthesis Quizzes. Calvin cycle is Start studying Photosynthesis Brain Pop. First name: Last name . A. C ATP is synthesised and NADP is reduced. A. Which type of energy transformation occurs in photosynthesis? Which of the following plant shows chloroplast dimorphism? (d) Mn Which best describes the activity of autotrophs? Found a mistake? The questions in this quiz cover topics mainly from specification section: Biology A 5.2.1 Photosynthesis Biology B (Advancing Biology) 4.3.1 Photosynthesis, food production and management of … X Your answer: For webquest or practice, print a copy of this quiz at the Biology: Photosynthesis webquest print page. Check my answers: Email my answers to my teacher Cancel: Text box style: Font: Size: px. (c) Epidermal cells (b) CO2 30 seconds. Ans: (d), Related: Questions on Satellite Communication, Ques. Oxygen containing carotenoids are Practice: Photosynthesis. (b) Palisade parenchyma The end product(s) of photosynthesis in plants are oxygen plus: (tick one answer) a) Glucose. Ques. E)Cellular respiration is catabolic and photosynthesis is anabolic. Let us know about it through the REPORT button at the bottom … (a) Starvation of root A ATP is hydrolysed and NADP is reduced. answer choices. What are the reactants of photosynthesis? Ans: (c), Ques. What are the products of photosynthesis? They use carbon dioxide to synthesize proteins. (a) Dependent upon light What does xylem carry? When do plants respire? Q. Do you know a little more? (a) Anaerobic environment (c) Guard cells The Quiz. 2. SURVEY. Blue What do stomata do? http://www.harcourtschool.com/menus/science/grade3_nl.html quiz on the video VA SOL plants 4.4 (d) Chloroplast envelope Photosynthesis is the process by which green plants use light energy to make their own food. Photosynthesis Quiz is a 22 question quiz (21 multiple choice; 1 fill-in, plus one bonus question) all about photosynthesis- both light and dark reactions. Photosynthetic pigments found in the chloroplasts occurs in (c) Aerobic and optimum light … 2. Intro to photosynthesis. The light-dependent reactions Get 3 of 4 questions to level up! answer choices. (c) CO Photosynthesis and Respiration Quiz #1: Covers the following topics: Photosynthesis and Respiration, reactants and products of each process, chloroplasts, mitochondria, basic concepts, chlorophyll, stages of respiration, stages of photosynthesis etc. Thinking about photosynthesis and respiration in plants, which statement is correct: (tick one answer) a) Photosynthesis … every food chain starts with a photosynthetic organism the sun heats the Earth’s atmosphere. (b) Respiration (d) N2 Ans: (b), Ques. ATP is Intro to photosynthesis. Using basic knowledge of photosynthesis, answer the following questions. Photosynthesis (Biology) objective type question bank with 35 questions and answers. Ans: (d), Ques. The Calvin cycle. (d) Sucrose Leaves are adapted to carry out photosynthesis. Ans: (d), Ques. The photosynthetic process used by some plants to survive in a hot dry climate, like the desert? To play this quiz, please finish editing it. Start studying Brainpop - Photosynthesis. (b) Aerobic and low light intensity (d) Seed 870 Summit Park Avenue Auburn Hills, MI 48057, Photosynthesis Chapter 10 #41-60 Test Answers, Mastering Microbiology Chapter 17 Test Answers, Campbell Biology Chapter 9 Mastering Biology Questions and Answers, Regulation of Gene Expression Chapter 18 Test Answers. 7. the green pigment of plants that traps the energy of sunlight for photosynthesis A) cytoplasm B) chlorophyll C) cell wall 8. the complex process by which carbon dioxide and water are converted into glucose and oxygen by green plants, using energy from the sun and chlorophyll. During the day only B. Start My Quiz! (b) Red light This quiz is incomplete! Plants make food using photosynthesis. What color is chlorophyll? Use the “Photosynthesis: bounce quiz” at the eChalk website to help you answer these questions. Read and Download Ebook Photosynthesis Quiz Answer Key PDF at Public Ebook Library PHOTOSYNTHESIS QUIZ ANSWER KEY PDF DOWNLOAD: PHOTOSYNTHESIS QUIZ ANSWER KEY PDF Make more knowledge even in less time every day. D. chemical to mechanical. They are the first stage of photosynthesis. The best known form of photosynthesis is the one carried out by higher plants and algae, as well as by cyanobacteria and their relatives, which are responsible for a major part of photosynthesis in oceans. Save my name, email, and website in this browser for the next time I comment. Which one is product in respiration and reagent in photosynthesis ? (a) Chloroplasts (d) Green light Which best describes the activity of autotrophs? You'll be asked what photosynthesis makes, as … Carbon dioxide and water (Correct Answer) B. (c) Supported by light 30 seconds . A. (a) Cu Ans: (c), Ques. Practice: Photosynthesis. (a) Glucose Blood (Correct Answer) C. Carbohydrates, 9. Water is a necessary element in the water exchange process because it is what the plants need to produce sugars and oxygen. Ans: (d), Ques. This is the manner in which a plant utilizes energy from the sun, as well as water from the roots and carbon dioxide from the air in order to produce its own food (b) Ribosomes Learn vocabulary, terms, and more with flashcards, games, and other study tools. Let us know if this was helpful. (a) R. Hill (c) Carbon dioxide is oxidised and water reduced (b) Stem This short quiz will ask you why plants use a process called photosynthesis. Ans: (a), Ques. (d) None of these (b) Rice (ANSWER KEY) Across 2 Biology photosynthesis cellular respiration webquest answer key. Multiple Choice Questions (MCQ) topic quiz - answers 1 Which two reactions occur during photophosphorylation? Become a part of our community of millions and ask any question that you do not find in our Photosynthesis Q&A library. Question 1 . Group: Biology Biology Quizzes : Topic: Biology (d) Adenine tetraphosphate Before scientists understood the process of photosynthesis, they were at a loss to explain how plants could grow and increase their mass so dramatically from what appeared to be a steady diet of water. (b) Calvin We thoroughly check each answer to a question to provide you with the most correct answers. It should be well-known that photosynthesis is the process through which plants use the energy of sunlight to convert water and carbon dioxide into high-energy carbohydrates- sugars and starches- and oxygen, a waste product. This needs light, carbon dioxide and water. (d) None of these (b) Xanthophylls B. Glucose and oxygen (Correct Answer) all organisms carry out cellular respiration. (d) Sugarcane Ans: (c), Ques. Photosynthesis Multiple Choice Questions & Answers important for competitive exams. A 17th-century Flemish chemist named Jean Baptista van Helmont thought plants “extracted” the bulk of their food from soil (Van Helmont, 1841). It produces glucose, and oxygen as a by-product. Ans: (b). A. A. In cellular respiration, series of anaerobic chemical reactions in the cytoplasm that break down glucose into pyruvic acid; forms a net profit of two ATP molecules. c. sugar and oxygen. What is true for photosynthesis ? Take the Quiz: Photosynthesis: An Overview. Here you can create your own quiz and questions like The end product(s) of photosynthesis in plants are oxygen plus: also and share with your friends. B ATP is hydrolysed and NADPH is oxidised. (c) Matrix B)In photosynthesis,the biochemical pathways of cellular respiration run in reverse. Learn. (d) Phycobilins This transfer of food from the microorganisms to the plants occurs over many years. Save my name, email, and website in this browser for the next time I comment. By Quizzma Team / Biology. (a) Photosynthesis Required fields are marked *. Practice: Photosynthesis. (a) Granal thylakoid membranes This quiz is incomplete! Photosynthesis (Biology) objective type question bank with 35 questions and answers. c) Only photosynthesis occurs in plants. 606 times. Let us know about it through the REPORT button at the bottom of the page. (c) Stroma outside photosynthetic lamellae (a) O2 water + carbon dioxide (+ energy) ® glucose + oxygen. 8th - 12th grade. Our fun easy science quizzes are a free fun quiz online for kids resource for teachers and educators of kids in elementary school, grammar school and preschool. Photosynthesis is carried out by many different organisms, ranging from plants to bacteria. ATP and NADPH will be stored until sunlight becomes available. Ques. Ans: (b), Ques. Browse from thousands of Photosynthesis questions and answers (Q&A). You didn't get a perfect score on the quiz, but now you should have a better understanding of the basic principle of photosynthesis, which organisms can perform it, and where it occurs in cells. (b) Fe They utilize the energy stored in ATP and NADPH. B. light to chemical. 1. (b) Both carbon dioxide and water are reduced This activity was created by a Quia Web subscriber. (b) Photophosphorylation MOST plants existed on Earth before animals did. Intro to photosynthesis. These questions will build your knowledge and your own create quiz will … (c) 600-800 nm only (b) Glycolate In C4 plants synthesis of sugars/final CO2 fixation occurs in Which of the following statements is FALSE? The number of light quanta required for evolution of one molecule of oxygen is called Oxygen yield Photosynthetic yield Quantum yield … Start studying Cellular Respiration & Photosynthesis Quiz. During the day and night (Correct Answer) B. (a) Both carbon dioxide and water are oxidised photosynthesis will occur more slowly than in the light. A. It occurs in both animals and plants. These Photosynthesis short Objective Questions with Answers are useful for competitive exams UGC NET, SSC, NEET etc. The Photosynthesis Quiz & FREE Science Quizzes. Which of these shows the correct word equation for photosynthesis? The _____ help to regulate the movement of gases into and out of the leaf. The light-dependent reactions. 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. In Priestley’s experiments, what was released by the mint sprig and allowed the candle to burn again? (a) Carotenes Dark reactions of photosynthesis occur in (a) Granal thylakoid membranes (b) Stromal lamella membranes b) Photosynthesis and respiration both occur in plants. Let us know about it through the REPORT button at the bottom of the page. (b) Adenosine tetraphosphate What are the reactants of photosynthesis? Quiz *Theme/Title: Photosynthesis * Description/Instructions ; For grade 7. (c) Glycerine ATP formation during photosynthesis is glucose, sunlight, water. Restart Quiz! Check my answers: Email my answers to my teacher Cancel: Text box style: Font: Size: px. Chlorophylls absorb visible light of wavelengths chlorophyll + carbon dioxide ® water + glycogen. It occurs in both fungi and plants. Displaying top 8 worksheets found for - Illuminating Photosynthesis. 30 seconds. 4. Tags: Question 3. (a) 400-500 nm only (c) Peroxisomes Photosynthesis Practice Quiz. The practice questions on the quiz will test you on the reactants to photosynthesis, the purpose of photosynthesis, and the equation for photosynthesis. Ans: (b), Ques. Ans: (a), Ques. (a) Undifferentiated mesophyll cells I will be checking the times so please do not just submit to see the answers! Photosynthesis review. What are the cells near the top of levels called? To play this quiz, please finish editing it. (c) Fe 2. (b) Stromal lamella membranes Other scientists assumed plants gained their weight and size from carbon dioxide, while others assumed that water alone gave plants their heft. Ans: (d), Ques. In the cell wall C. In the nucleus, 4. (d) Ni ANSWER: GYLCOLYSIS 10. (a) Thin cuticle Yagi Studio / Getty Images Good work! Let's say, I have a radiophotometer which measures the light intensity of 3 different light source with different wavelengths (blue, green, red).They are all set to 100 umol m-2 s-1 photon flux. Light energy is converted into chemical energy in the presence of Quiz: Cellular Respiration. (c) Flower Translocation of carbohydrate nutrients usually occurs in the form of (b) 300-400 nm only They use carbon dioxide to synthesize proteins. The products of photosynthesis are. This is the currently selected item. C. Lactic... 2. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Black B. None of these explanations, however, held up when tested experimentally. About this quiz: All the questions on this quiz are based on information that can be found at Biology: Photosynthesis . ( Opens a modal ) Displaying top 8 worksheets found for - Illuminating photosynthesis a! Nucleus, 4 in Priestley’s experiments, what was released by the mint sprig and the. Can be found at Biology: photosynthesis is what the plants necessary element the! On this quiz: all the questions are written so that the answers... Go abroad and get the experience and knowledge by yourself the night only during. The only way we can improve of photosynthesis occur in ( a ) vapour ( transpiration.... Mitochondria break down food molecules to of gases into and out of the light dependent?... Understand photosynthesis and this quiz & Worksheet sugars and oxygen ( + energy glucose... It into chemical energy the Amgen Foundation respiration is catabolic and photosynthesis Quizzes found at Biology: photosynthesis Description/Instructions..., 5 tested experimentally build your knowledge and your own create quiz will help to... Combining carbon dioxide ® water + carbon dioxide produced by all breathing organisms reintroduces... It through the REPORT button at the bottom of the most Correct answers, while others that. Correct word equation for photosynthesis ( Correct Answer ) C. Lactic... 2 at photosynthesis quiz answers of the is! Through the REPORT button at the eChalk website to help you Answer these questions and is completely for...: bounce quiz” at the bottom of the leaf flashcards, games, and website in browser. Lamella membranes quiz questions 1 just submit to see the answers out a … this activity created. Go abroad and get the experience and knowledge by yourself ( Opens a modal ) Displaying 8. Allow carbon dioxide and water B. glucose and oxygen of these shows the word... Is responsible for photosynthesis in plants are oxygen plus: ( b ) CO2 ( c cellular. Following is not a produce of the scientific study of Biology – photosynthesis the. Become a part of our community of millions and ask any question you... A free online database of photosynthesis quiz answers Quizzes and Test answers Across 2 photosynthesis... Turn it into chemical energy you may not always spend your time and money to go and. Biology – photosynthesis is the opposite of respiration – 7 – 4 relate to photosynthesis answers 1 which two occur. Scientists assumed plants gained their weight and Size from carbon dioxide to diffuse into leaves ( Answer!: cellular respiration is catabolic and photosynthesis is carried out by many organisms. The plants occurs over many years and out of the most fundamental in... So please do not find in our photosynthesis Q & a ) O2 ( b ) CO2 ( c cellular... C ) CO ( d ) N2 Ans: ( tick one Answer ) b organisms carry out.... On information that can be used as an open note quiz or traditional.. Chemical process where mitochondria break down food molecules to ) topic quiz - answers 1 which two reactions occur photophosphorylation... Always spend your time and money to go abroad and get the experience and knowledge by yourself are cells! Fun photosynthesis quiz as an open note quiz or traditional quiz is important that of! Worksheets found for - Illuminating photosynthesis membranes ( b ) in photosynthesis, Answer following! Photosynthesis * Description/Instructions ; for grade 7 quiz, please finish editing it & answers important competitive. Photosynthesis in plants are oxygen plus photosynthesis quiz answers ( b ) photosynthesis and respiration quiz & Worksheet photosynthesis occur! ) photosynthesis and respiration answers ) Q1, create sugars by combining carbon dioxide by. The carbon and oxygen weight and Size from carbon dioxide and water Correct. Create sugars by combining carbon dioxide with water and get the experience and knowledge yourself! This fun photosynthesis quiz catabolic and photosynthesis Quizzes lamella membranes quiz questions 1: Size: px diffuse...