The entire respiratory tract (passage) consists of the nose, pharynx, larynx, trachea, bronchi, and bronchioles. Ask & Answer; School Talk; Login; GET APP; Login Create Account. The chemiosmotic hypothesis has been put forward by Peter Mitchell (1961) to explain the mechanism. Solution: Biosynthetic phase of photosynthesis : • It occurs in the stroma of chloroplasts. long answer please. How did you reach this answer? This video contains practice questions on the types of nutrition and the ph... Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day. Write. (2) 1. Air enters the nose through the nostrils. Verify your number to create your account, Sign up with different email address/mobile number, NEWSLETTER : Get latest updates in your inbox, Need assistance? Answer (a) Photosynthesis is a process in which green plants use sunlight to make their own food. Draw a labelled diagram showing reabsorption and secretion of major substances at different parts of the nephron. Explain how the absorption of water by roots helps photosynthesis take place. The upward movement of water happens through the xylem tissue in the plant. While a 3-carbon molecule is the direct result of photosynthesis, glucose is simply two of these molecules combined and is often represented as the direct result of photosynthesis due … A photon strikes photosystem II to initiate photosynthesis. 63. ADVERTISEMENTS: Human Respiratory System and it’s Mechanism! Therefore, C 4 plants dominate grassland floras and biomass production in the warmer climates of the tropical and subtropical regions (Edwards et al., 2010). In this article, we attempt to answer all your queries about this process. This process of “carbon fixation” is how most new organic matter is created. Photosynthetic organisms, known as photoautotrophs, capture the energy from sunlight and use it to produce organic compounds through the process of photosynthesis. (5 marks) [Unit 1, June 16] 1. Don’t worry, let us know and we will help you master it. Recognizing that photosynthesis is the key source of energy for life on Earth and given the rapid pace of global environmental change, and the pressure of an increasing human population (e.g. Explain the mechanism of formation of concentrated urine in mammals. Explain how the products of photosynthesis are both loaded into and unloaded out of vascular tissue. Light-dependent phase is also known as the Hill reaction or photochemical reaction. This happens when the C4 acid from the mesophyll is broken down in the bundle sheath cells to release Carbon dioxide which further results in the increasing the intracellular of carbon dioxide. Molecular oxygen is released during photosynthesis. Photosynthesis - Photosynthesis - Basic products of photosynthesis: As has been stated, carbohydrates are the most-important direct organic product of photosynthesis in the majority of green plants. Long answer type questions . Because stomata must open to allow for the uptake of CO 2, water escapes from the leaf during active photosynthesis.Desert plants have evolved processes to conserve water and deal with harsh conditions. Answer . Both types of reactions take place in chloroplasts: light-dependent reactions in the thylakoid and light-independent reactions in the stroma. In summary, photosynthesis is a process in which light energy is converted to chemical energy and used to produce organic compounds. Test. Explain how the absorption of water by roots helps photosynthesis take place. Photosynthesis, the process by which green plants and certain other organisms transform light energy into chemical energy. - 13158720 Explain how plants absorb energy from sunlight; Describe how the wavelength of light affects its energy and color; Describe how and where photosynthesis takes place within a plant; How can light be used to make food? There are several ways of measuring the rate of photosynthesis in the lab. HARD. In this way, they coordinate with each other and photosynthesis occur. 5.Photophosphorylation- Electrons are used in converting ADP (adenosine diphosphate) into energy-rich compound ATP (adenosine triphosphate) by adding one phosphate group.The process of addition of phosphate is called phosphorylation. Long Answer Questions (5 marks each) 21. Explain briefly, micturition and disorders of the excretory system. in deail. 2.Photolysis of water- Energy absorbed is used in the splitting of water molecules into hydrogen ion (H+) and hydroxide ion (OH−). Life Processes. Two main phases are involved in the mechanism of photosynthesis:light dependent phase and light independent phase. Share with your friends. How is this pathway an adaptive advantage to the plant ? Long answer type question: Explain the mechanism of reflex action with the help of an example. High pH favours conversion of starch into glucose-1-PO4 in the presence of phosphorylase. The most common and abundant pigment is chlorophyll a. Flashcards. In harsh, dry heat, every drop of water must be used to survive. This phase is also known as the Calvin cycle or biosynthetic phase. This phase occurs in the thylakoids … Time between peak 14C at tp of trunk and bottom. In CBSE Class 10 Science Exam 2020, Question number 25 to 30 in Section-C will be of long answer type carrying 5 marks each. reduction of co2 to carbohydrates. In plants, photosynthesis typically occurs within the chloroplasts located in plant leaves. The rate of respiration depends on the energy needs of the plant while the rate of photosynthesis varies depending on the availability of light energy, if all other conditions are maintained the same. Photosynthesis Definition. Short /Long answer type question. Go through important long answer type questions for CBSE Class 10 Science Exam 2020. Photosynthesis definition, the complex process by which carbon dioxide, water, and certain inorganic salts are converted into carbohydrates by green plants, algae, and certain bacteria, using energy from the sun and chlorophyll. This increase in photosynthetic efficiency (or quantum yield) is known as Emerson effect or … ★★★ Correct answer to the question: Explain how the absorption of water by roots photosynthesis take place. Gravity. In summary, photosynthesis is a process in which light energy is converted to chemical energy and used to produce organic compounds. Median response time is 34 minutes and may be longer for new subjects. - 13158720 Light dependent phase. Photosynthesis - Photosynthesis - Carbon fixation in C4 plants: Certain plants—including the important crops sugarcane and corn (maize), as well as other diverse species that are thought to have expanded their geographic ranges into tropical areas—have developed a special mechanism of carbon fixation that largely prevents photorespiration. Photosynthesis evolved early in Earth’s history. STUDY. Explain how the transport of sodium ions is involved in the absorption of glucose by epithelial cells. It evolved as an adaptation to high light intensities, high temperatures, and dryness. Describe the results in the figure. You need to include mechanisms of how each process is done. Two main phases are involved in the mechanism of photosynthesis:light dependent phase and light independent phase. A.1. (b) Write a chemical equation to show the process of photosynthesis in plants. The chloroplasts of plants use a process called photosynthesis to capture light energy from the sun and convert it to chemical energy stored in sugars and other organic molecules. Answer: A pulling force called suction, caused by the evaporation of water in a leaf draws a long, continuous column of water through the xylem from the root to the leaf. Photosynthesis consists of two stages, the light reactions, and the dark reactions. The final mechanism for movement across the plasma membrane into the cell is endocytosis, a process in which a small patch of plasma membrane encloses particles or tiny volumes of fluid that are at or near the cell surface. Chemical energy is stored in the form of sugars, which are generated from carbon dioxide and water. Photorespiration is a wasteful pathway that competes with the Calvin cycle. The high carbon dioxide concentration in the plants makes all Rubisco … JWTxrner. *Response times vary by subject and question complexity. Long answer type questions . output long answer please. (About) 30 hours; 2. Photosynthesis requires sunlight, chlorophyll, water, and carbon dioxide gas as raw materials to prepare food. long answer . Algae also use photosynthesis to turn solar energy into chemical energy. Photosynthesis consists of two stages, the light reactions, and the dark reactions. The light reactions convert light into energy (ATP and NADHP) and the dark reactions … Plants and other autotrophs are the producers of the biosphere. In the first part of photosynthesis, the light-dependent reaction, pigment molecules absorb energy from sunlight. It is an endothermic chemical process that uses sunlight to turn carbon dioxide into sugars. Why is the leaf boiled in water for few minutes in activity 6.1 class 10? The reactions of plant photosynthesis are divided into those that require the presence of sunlight and those that do not. (1) Length of trunk (between top and bottom). Energy travels through the electron transport chain, which pumps hydrogen ions into the thylakoid space. What processus wolud you considère essentiel for maintining life. It occurs in the stroma of the chloroplast. This is called the transpiration stream. This partial vacuum is quickly filled by the water being moved upward from the roots. 4.Formation of molecular oxygen- Hydroxide ion is oxidised to hydrogen peroxide which decomposes to form molecular oxygen (O2). Log in, Concise Mathematics Class 10 ICSE Solutions 2018. This phase occurs in the thylakoids of the chloroplast. Does photosynthesis occur in leaves only? Photosynthesis is very important for life on Earth.Green plants build themselves using photosynthesis. It is an endothermic (takes in heat) chemical process that uses sunlight to turn carbon dioxide into sugars. Photosynthesis - Photosynthesis - Carbon fixation in C4 plants: Certain plants—including the important crops sugarcane and corn (maize), as well as other diverse species that are thought to have expanded their geographic ranges into tropical areas—have developed a special mechanism of carbon fixation that largely prevents photorespiration. Created by. Explain the mechanism of photosynthesis and write a chemical equation to show that. Like in respiration, in photosynthesis too, ATP synthesis is linked to development of a proton gradient across a membrane. Photosynthesis can also be seen as the reverse of respiration where the by-products of respiration are used as primary raw materials in photosynthesis. AQA A-Level Biology long answer Qs. These include: the rate of oxygen. Photosynthesis is the process by which plants and some microorganisms make substances like carbohydrates. Thus Section-C alone will count to a total of 30 marks. Only 1% of the water that is taken in is used during photosynthesis and remaining is lost by transpiration. Chapter 10 Photosynthesis Lecture Outline . Opening of stomata in light involves the following steps: The pH of guard cells increases to 7 due to the use of the carbon dioxide in photosynthesis in the presence of light. Recognizing that photosynthesis is the key source of energy for life on Earth and given the rapid pace of global environmental change, and the pressure of an increasing human population (e.g. (b) Write a chemical equation to show the process of photosynthesis in plants. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds. Long before the issues of global warming arose, scientists especially, biologists and ecologists were interested in plant photosynthesis and the problem of respiration energy in the conditions of high temperature. Explain the process of biosynthetic plase of photosynthesis occuring in chloroplast. Plants use the energy produced during photosynthesis to grow flowers, fruits and seeds.Tree leaves and roots are used as ingredients in manufacturing some medicines. Without photosynthesis, the atmosphere would not have enough oxygen to support humans, animals and even plants, which also require oxygen. Justify. The process of photosynthesis primarily occurs in leaves of all green plants. (A) Cross section from a leaf of Megathyrsus maximus.A typical C 4 leaf with bundle sheath and mesophyll cells surrounding the veins in layers. Photosynthesis is an endothermic reaction. (c) Explain the mechanism of photosynthesis. Green plants build themselves using photosynthesis. Describe the mechanism which brings about the change in the structure depicted in A and B. Xylem transports water, dissolved minerals and other organic matters that reach them through roots. Spell. The cell membrane of amoeba keeps on protruding into pseudopodia. During photosynthesis, most plants use the enzyme RuBP carboxylase to capture carbon dioxide during the day. See more. Class-10 » Science. This phase occurs simultaneously with the light-dependent reaction. Describe C 4 pathway in a paddy plant. Explain the process of biosynthetic phase of photosynthesis occurring in the chloroplasts. Select three properties of water and: … Continue reading "AP Essay Questions" Photosynthesis is the process by which plants and some microorganisms make substances like carbohydrates. Explain photosynthesis, contrasting the actions of RuBP carboxylase and Pep case. C 4 PHOTOSYNTHESIS. The unique properties (characteristics) of water make life possible on Earth. 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. How long did it take 12C label to get from the top of the trunk to the bottom of the trunk? Learn. Answer (a) Photosynthesis is a process in which green plants use sunlight to make their own food. The human respiratory system consists of a pair of lungs and a series of air passages leading to the lungs. Labeled diagrams may be used to supplement discussion, but in no case will a diagram alone suffice. Answer: Photosynthesis is a method of transforming light energy into chemical energy by phototrophs, which is later used to fuel cell functions. 63. Using the energy from light and the hydrogens and electrons from water, the plant combines the carbons found in carbon dioxide into more complex molecules. This video explains the factors affecting the rate of photosynthesis. The rapidity of its emergence suggests it was no fluke and could arise on other worlds, too. Photosynthesis requires energy in the form of light to drive the chemical reaction. Explain the mechanism of re... biology. 1.Formation of glucose- Carbon dioxide is converted into glucose by using ATP and NADPH produced during the light reaction. Biology, 07.01.2021 18:10, LadyHolmes67 Explain in details the mechanism of transportation in plants PLAY. Because the energy used comes from light, it is also called photophosphorylation. If you can remember the chemical formula for both photosynthesis and cellular respiration, if you can explain how the two processes complement one another, and if you can explain what happens when there is not enough oxygen for cellular respiration, then you've learned what you need to have learned. Share 0. it helps in the absorption of light energy by chlorophyll. Photosynthetic tissue of these plants contains both Pep case and RuBP carboxylase. What does Photosynthesis produce? Factors affecting photosynthesis. AP Biology Essay Questions The following is a comprehensive list of essay questions that have been asked on past AP exams. 22. Long Answer Type Questions. The chlorophyll in these living organisms, which also contributes to their green hues, absorbs the sunlight and combines it with carbon dioxide to convert these compounds into an organic chemical called adenosine … The food vacuole contains the food particle and water. Photosynthesis is important because it provides two main things: food; oxygen; Some of the glucose that plants produce during photosynthesis is … During photosynthesis, most plants use the enzyme RuBP carboxylase to capture carbon dioxide during the day. Answer: Amoeba is a unicellular animal which follows holozoic mode of nutrition. 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Reflex action is a form of animal behaviour in which the stimulation of a sensory organ (receptor) results in the activity of … Photosynthesis is the biochemical pathway which converts the energy of light into the bonds of glucose molecules. Photorespiration does not occur in C4 plants because they increase the concentration of carbon dioxide at the enzyme site by a mechanism. Answer. The process of photosynthesis occurs in two steps. In the first step, energy from light is stored in the bonds of adenosine triphosphate (ATP), and nicotinamide adenine dinucleotide phosphate . Photosynthesis is the process by which plants make their own food using carbon dioxide, water and sunlight. Steward proposed the following to explain stomatal movement. It is important that you read each question completely, and answer each section of the question. Answer Before discussing the mechanism view the full answer It begins when rubisco acts on oxygen instead of carbon dioxide. Want a call from us give your mobile number below, For any content/service related issues please contact on this number. The C 4 photosynthetic carbon cycle is an elaborated addition to the C 3 photosynthetic pathway. A further mechanism of regulation for photosynthesis that prevents overreduction of the PSI acceptor side and the chloroplast stroma is the “malate valve” system, which transfers reducing equivalents to the cytosol (Scheibe et al., 2005). Photosynthesis : Photosynthesis is an enzyme regulated anabolic process of manufacture of organic compounds inside the chlorophyll containing cells from carbon dioxide and water with the help of sunlight as a source of energy. Biology Essay questions that have been asked on past ap exams with 460–500nm and monitoring the emission above.... Absorption of water by roots helps photosynthesis take place in chloroplasts: light-dependent reactions in the absorption of water roots. 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And effective preparation for the board exam begins when Rubisco acts on oxygen instead of carbon dioxide water! To light, it is an endothermic chemical process that uses sunlight to turn solar energy into chemical energy used... Organic matter is created stages, the molecular mechanism of explain the mechanism of photosynthesis long answer Flavonoids on the inhibition of Microcystis aeruginosa is unknown! Showing reabsorption and secretion of major substances at different parts of the biosphere glucose.. Photons to get from the lumen of the nephron phase occurs in the stroma the of. The full answer photosynthesis consists of two stages, the atmosphere would not have enough oxygen to support,. Intestine into epithelial cells compounds from plants in plants explain the process by which plants and some microorganisms make like. Supplement discussion, but in no case will a diagram alone suffice on Earth.Green build. To supplement discussion, but in no case will a diagram alone suffice plant.. Capture the energy used comes from light, chlorophyll becomes excited and photons... Below numbers, Kindly Sign up for a personalized experience by transpiration will be the ones graded to! Micturition and disorders of the water being moved upward from the top the! On below numbers, Kindly Sign up for a personalized experience the transport of sodium ions is in... Food using carbon dioxide and water a membrane is a wasteful pathway that competes with the help an. That reach them through roots thylakoids of the trunk and light-independent reactions: biosynthetic phase of.. Plants use sunlight to make easy and effective preparation for the board exam explain,! Particle and water don ’ t worry, let us know and we help. Questions that have been asked on past ap exams the most common and abundant pigment is chlorophyll a each completely! Plants to generate glucose, carbohydrates, making use of the nose, pharynx larynx. Photosynthesis are divided into those that do not at different parts of the water being upward! Plants makes all Rubisco … Flavonoids are natural polyphenolic compounds from plants properties ( characteristics ) of water into... Answer explain the mechanism of photosynthesis long answer section of the 14C down the trunk contains the food with! Water happens through the electron transport chain, which are generated from carbon dioxide gas as materials.
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