12.9. The leaves of plants that use C3 photosynthesis absorb sunlight and carbon dioxide during the day, performing photosynthesis while the sun is out. Plants make their food through photosynthesis which require sun light water and chlorophyll. For example CAM plants are desert succulents in which stomata opens at night time and carbon dioxide is fixed into organic acids, like malic acid and oxaloacetic acid. The cookie is used to store the user consent for the cookies in the category "Analytics". Specialized cells known as guard cells surround stomata and function to open and close stomatal pores. Stomata regulate gas exchange between the plant and environment and control of water loss by changing the size of the stomatal pore. During the day, stomata are generally open to allow What is the moral lesson of at wars end by rony diaz? In general, stomata open by day and close at night. These cookies ensure basic functionalities and security features of the website, anonymously. Your email address will not be published. At night, this cant happen because it requires light to start the process. During the day, photosynthesis requires that the leaf mesophyll be exposed to the air to get CO2. Stomata open during daytime and close at nighttime because of the presence of light. In C4 plants , why stomata closed during the night? These cookies ensure basic functionalities and security features of the website, anonymously. Why do plants close their stomata at night? the lack of light means photosynthesis can't take place, many How do plants breathe at night? Why does polyploidy result in increased stomatal size? CAM plants such as cacti and Opuntia ficus-indica achieve their high water use efficiency by opening their stomata during the cool, desert nights and closing them during the hot, dry days. Stomata are mouth-like cellular complexes at the epidermis that regulate gas transfer between plants and atmosphere. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. The guard cell on receiving this water swells and becomes turgid. Why plants keep their stomata closed at night? This cookie is set by GDPR Cookie Consent plugin. Without oxygen or carbon dioxide present, neem trees provide the necessary defense against air pollution. Required fields are marked *. This cookie is set by GDPR Cookie Consent plugin. The carbon dioxide enters specialized cells, where enzymes convert carbon dioxide into other carbon-based molecules and store these molecules in vacuoles, which are like storage tanks for the plant cells. Recycling Versus. 7 What happens to carbon dioxide in the stomata? The cookie is used to store the user consent for the cookies in the category "Analytics". Why do guard cells become flaccid at night? What are various methods available for deploying a Windows application? Stomata allow a plant to take in carbon dioxide, which is needed for photosynthesis. Normally the stomata is closed at night and open during the day because of photosynthesis. Generally,the stomata of a leaf are open when exposed to light and remain opened under continuous light.when darkness retruns,the stomata are closed. EMMY NOMINATIONS 2022: Outstanding Limited Or Anthology Series, EMMY NOMINATIONS 2022: Outstanding Lead Actress In A Comedy Series, EMMY NOMINATIONS 2022: Outstanding Supporting Actor In A Comedy Series, EMMY NOMINATIONS 2022: Outstanding Lead Actress In A Limited Or Anthology Series Or Movie, EMMY NOMINATIONS 2022: Outstanding Lead Actor In A Limited Or Anthology Series Or Movie. In photosynthesis, plants use carbon dioxide, water, and sunlight to produce glucose, water, and oxygen. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Your email address will not be published. This cookie is set by GDPR Cookie Consent plugin. document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Stomata are mouth-like cellular complexes at the epidermis that regulate gas transfer between plants and atmosphere. For stomata to open during the daytime, potassium ions are actively transported inside the guard cell, increasing its concentration. In general, stomata open by day and close at night. Under these conditions, rapid stomatal closure (i.e., hours after first being exposed to cold stress), At night the leaves cant photosynthesize so the stomata close to conserve water, the living cells however continue to consume glucose and oxygen. At night, since the stomata on a leaf are closed, there is no gas exchange taking place. Which is the main function of stomata in one word? Save my name, email, and website in this browser for the next time I comment. In the dark, the guard cells lose water, become flaccid and the stoma closes. In most cases stomata open at day time and . Performance cookies are used to understand and analyze the key performance indexes of the website which helps in delivering a better user experience for the visitors. to avoid losing excess water during the night 4 Do plants close their stomata on a hot day? This website uses cookies to improve your experience while you navigate through the website. Requested URL: byjus.com/question-answer/why-do-stomata-close-at-night/, User-Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_5 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/15.5 Mobile/15E148 Safari/604.1. The cookies is used to store the user consent for the cookies in the category "Necessary". How Can Stomata Operate in Photosynthesis? By clicking Accept All, you consent to the use of ALL the cookies. This cookie is set by GDPR Cookie Consent plugin. Why do plants open their stomata at night? What is the slope and y-intercept of 1 3x? What is the reason behind the opening and closing of stomata? That's why it is called C3 photosynthesis. We also use third-party cookies that help us analyze and understand how you use this website. Stomata are open during the day because this is when photosynthesis typically occurs. Humidity is an example of an environmental condition that regulates the opening or closing of stomata. Because plants must exchange gases through their stomata, closing them . Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Now, this process is a complex network of many different processes working together. They open it While C3 plants are the most common plant type, they dont do very well in all conditions. Or maybe the O 2 diffuses well enough through the plant . You might be wondering when the stomata open and close and how they work. I thought the plant could produce the O 2 internally through some chemical reaction. Stomata are mouth-like cellular complexes at the epidermis that regulate gas transfer between plants and atmosphere. The stomata open at high air humidity in spite of a decrease in leaf water content. They can do this because they. Most of the plants you are familiar with use a type of photosynthesis called C3 photosynthesis. Stomata are mouth-like cellular complexes at the epidermis that regulate gas transfer between plants and atmosphere. Plants close stomata in response to their environment; for example, most plants close their stomata at night. They provide for the exchange of gases between the outside air and the branched system of interconnecting air canals within the leaf. At night, when It does not store any personal data. Other examples of plants that use the CAM pathway in order to survive in arid environments include epiphytes such as orchids, bromeliads like the pineapple plant, and succulents like the jade plant. There is one group of mainly desert plants, known as CAM plants, 4 What is the reason behind the opening and closing of stomata? But what about other living things, like plants? The answer to your question is therefore:- They breath through their LENTCALS. How much did it cost for 1 dozen of donuts in 1970? Lets get into it! They generally open during the day to soak up CO2 to use for photosynthesis, then shut at night to retain extra moisture. Stomata are composed of a pair of specialized epidermal cells referred to as guard cells (Figure 3). Due to this the water potential in the guard cells decreases and water moves inside the guard cells causing them to swell up and become turgid which in turn causes the opening of stomata pores. Closed for the Night In order to minimize excessive water loss, stomata tend to close at night, when photosynthesis is not occurring and there is less benefit to taking in carbon dioxide. Therefore, there is neither oxygen nor carbon dioxide present around a tree at night. During the night no photosynthesis takes place but respi. Since plant cells need carbon dioxide for photosynthesis, carbon dioxide concentrations are another key factor. The cookie is used to store the user consent for the cookies in the category "Performance". In general, stomata open by day andclose at night. Why do stomata close during the day when its hot? The gaseous exchange required at night doesn't occur via stomatal . For photosynthesis, the plant takes in carbon dioxide, light energy, and water to produce glucose and oxygen. A teacher walks into the Classroom and says If only Yesterday was Tomorrow Today would have been a Saturday Which Day did the Teacher make this Statement? They provide for the exchange of gases between the outside air and the branched system of interconnecting air canals within the leaf. This cookie is set by GDPR Cookie Consent plugin. As a form of water-saving adaptation, the stomata of xerophytes only open at night, while they remain closed during the day. TimesMojo is a social question-and-answer website where you can get all the answers to your questions. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. Stomata allow gas exchange between the interior of the plant and its environment. Analytical cookies are used to understand how visitors interact with the website. Photosynthesis is the process by which plants convert sunlight into usable energy. Stomata are mouth-like cellular complexes at the epidermis that regulate gas transfer between plants and atmosphere. In bright light the guard cells take in water by osmosis and become plump and turgid . It can stimulate the closing and opening of the stomata. Thus, they close their stomata at night to prevent excess loss of water through them. This is because the rate of transpiration is controlled by the stomatal aperture, which will be closed during night time. Why stomata open during day and close at night? It takes carbon dioxide and gives out oxygen during the process of photosynthesis. Stomata are generally more numerous on the underside of leaves. Functions of Stomata: The main function of stomata is to open and close the pores in the leaves for an exchange of gases. Ottoline Leyser tells me that There is a well-established correlation between ploidy level and cell size polyploid cells are bigger. 5 What is the definition of stomata in science? Stomata are composed of two guard cells. Environmental conditions like light, humidity, and access to CO2 all affect the position of the pores. They take up CO2 during the night through stomata and store it in their photosynthesising cells in the form of an intermediate until the day. However, this strategy introduces new dilemmas. His work has appeared in New Scientist, LiveScience, Discovery's Curiosity Daily podcast, and MinuteEarth. Stomata can not be closed in the daytime, because the plant has to intake carbon dioxide for the process of photosynthesis. Can The tpms sensors on a 2002 Ford Explorer can be activated using a magnet.. By clicking Accept All, you consent to the use of ALL the cookies. Each stoma remains surrounded by two kidneys or bean shaped epidermal cells the guard cells. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Responsibility disclaimer and privacy policy | About us | Our mission | Site Map, The most important scientific discoveries of 2022. Why Is Transformation A Useful Technique In Biotechnology. In many plants, when the outside temperature is warm and water evaporates more readily, plants close their stomata to prevent excessive water loss. Stomata of This is a survival technique used by a number of different flower species that protects them against nocturnal insects or helps retain moisture. During the day the roots absorb water due to greater transpiration pull and it is transported to different parts of the plant through xylem. It allows the plant to take in carbon dioxide and give out oxygen for photosynthesis. The guard cells close the entrance for protection against . Answer (1 of 3): In most but not all plant species stomata are open during the day and closed during the night. The neem tree, in addition to its natural and effective nature, is an important component of the fight against air pollution because of its unique properties. Do plants close their stomata on a hot day? Required fields are marked *. Stomata are tiny holes found in the underside of leaves. Plants close stomata in response to their environment ; for example, most plants close their stomata at night. When osmotic pressure decreases, water moves out and makes the stomata close due to which stomata become more flaccid. Acacia, Mimosa and Albizia are the plants that have leaves that close at night. Why do stomata close during the day when it's hot? In cool air and darkness, the bottom-most petals of certain flowers grow at a faster rate than the upper-most petals, forcing the flowers shut Under drought, plants may also close their stomata to limit the amount of water that evaporates from their leaves. Best offers for your garden http://s.click.aliexpress.com/e/1Wy5buU, Stress and anxiety researcher at CHUV2014presentPh.D. Under drought, plants may also close their stomata to limit the amount of water that evaporates from their leaves. Are the stomata open or closed during night time? The opening or closing of stomata occur in response to signals from the external environment. Home | About | Contact | Copyright | Report Content | Privacy | Cookie Policy | Terms & Conditions | Sitemap. What will happen if there is no stomata in a plant? Plants keep their stomata closed at night, to prevent or to control the excess loss of water from their pores. plants close their stomata to reduce water loss. 2 Why do stomata close during the day when its hot? an intermediate. Necessary cookies are absolutely essential for the website to function properly. Photosynthesis only happens during the daytime when there is enough sunlight. Stomata are mouth-like cellular complexes at the epidermis that regulate gas transfer between plants and atmosphere. This cookie is set by GDPR Cookie Consent plugin. . Under drought, vegetation might also shut their stomata to restrict the quantity of water that evaporates from their leaves. Plant leaves need oxygen in the night but they get enough of it by diffusion through the cuticle. Temperature also signals guard cells. It allows the plant to take in carbon dioxide and give out oxygen for photosynthesis. During the day, photosynthesis requires that the leaf mesophyll be exposed to the air to get CO2. During night, desert plants absorb carbon dioxide and form an intermediate. Why Do Cam Plants Open Stomata At Night00:22 - Are the stomata open or closed during night time?00:42 - How the stomata opens in the night?01:07 - How does d. Temperature also signals guard cells. These pores are called stomata. In many plants, when the outside temperature is warm and water evaporates more readily, plants close their stomata to prevent excessive water loss. remain closed during day time. In this way, CAM plants get around the limitations faced by other plants that open their stomata during the day and close them at night. This is why in cases of lack of water in the soil, the plan tends to close the stomata to stop the loss of water, even though this will make . The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Stomata are the specialized tiny pores or openings present in the epidermis of plant cells. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. Stomata are mouth-like cellular complexes at the epidermis that regulate gas transfer between plants and atmosphere. These cookies help provide information on metrics the number of visitors, bounce rate, traffic source, etc. This is the process through which plants utilize sunlight, carbon dioxide and water to generate oxygen and synthesize food for themselves. He teaches Ecology and Evolution at the University of Northern Colorado. But, the roots continue to absorb moisture throughout the night. They control water loss and gas exchange by opening and closing. When water flows into the guard cells, they swell up and the curved surface causes the stomata to open. Theyre just highly evolved. How is it done? What does this mean emulate what you respect in your friends? In desert plants, the stomata is open during night. The stomata enable carbon dioxide gas to enter the plant for photosynthesis . These cookies will be stored in your browser only with your consent. These cookies will be stored in your browser only with your consent. Why stomata open during day and close at night? And thats exactly what we are going to talk about in this video. Answer (1 of 5): Closing and opening of stomatas takes place due to sugar concentration theory or the recent K+ ion theory . Thus, they close their stomata at night to prevent excess loss of water through them. This depends on the photosynthesis type of the plant: C3, C4 or CAM. be greatest, and open them at night, using a biochemical method to We use cookies on our website to give you the most relevant experience by remembering your preferences and repeat visits. At night, the stomata close to avoid losing water when photosynthesis is not occurring. The answer lies in the environment. At low temperatures, plants dehydrate because of restricted water uptake. Guard cells imbibe water during the night time to become turgid and close the stomatal opening. What sort of Damage Has Mauna Loa Caused? Why do stoma need to open and close during different times of the day? Sun light is available at day time not at night. So How Exactly Does CO2 Modify the Opening of Stomata? At this stage, the guard cells become flaccid, making it look like the letter 'I'. Increase in temperature causes stomata to open. Is it easy to get an internship at Microsoft? Those little holes are called stomata, and they are crucial to a plants survival. During transpiration the movement of potassium ions in and out of the guard cells causes the opening and closing of stomata. How old would you be if you graduated high school in 1977? Due to this, the process of photosynthesis would not take place and plant will die due to excess water and no food. However, it can only work like this for a short time because with the stomata shut, oxygen can easily reach toxic levels in the leaf. However, you may visit "Cookie Settings" to provide a controlled consent. At night, the stomata close to avoid losing water when photosynthesis is not occurring. When do C4 plants open and close their stomata? . Instead, they use a modified version of photosynthesis called crassulacean acid metabolism. This causes stress and pressure on the roots, as they take up more moisture than they can comfortably hold. Which item does not have a food-contact surface? Ans: If stomata are not present in the leaves of the plants then, the Carbondioxide would not be able to enter the plant and also, plant would not be able to remove excess water. While at night, the plants uptake oxygen and release carbon dioxide, which is called respiration. Why is stomatal density low when carbon Plants in moist environments would require more stomata. Analytical cookies are used to understand how visitors interact with the website. 4 When transpiration occurs at day or night? In leaves, they typically open during the day to favor CO 2 diffusion when light is available for photosynthesis, and close at night to limit transpiration and save water. Guard cells actively pump potassium ions (K +) out of the guard cells and into surrounding cells. Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. High CO 2 inside leaf = stomata close. These pores are surrounded by guard cells. This enlarging of the guard cells open the pores. Another cause of stoma bag leakages at night could simply be because you havent secured your bag properly before you get into bed. This cookie is set by GDPR Cookie Consent plugin. Why transpiration does not occur at night? At night, the stomata close to avoid losing water whenphotosynthesis is not occurring. The excess water exits through the stomata in a process called transpiration. The stomatal pores must intake carbon dioxide for photosynthesis. These plants are known as night bloomers Stomata. It's an . As a result I have a hard time to imagine how the plant can get the O 2 it needs for respiration during the night. In leaves, they typically open during the day to favor CO 2 diffusion when light is available for photosynthesis, and close at night to limit transpiration and save water. 2 Which plants close their stomata at night? During the day, stomata close if the leaves experience a lack of water, such as during a drought. Where are the majority of stomata located? Stomata in xerophytes open in night and remain close during day to prevent loss of water through transpiration. The answer to your question is therefore:-, In desert plants, the stomata is open during night. How stomata open and close during day and night? 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Two kidneys or bean shaped epidermal cells the guard cells close the stomatal,. Thought the plant and environment and control of water through transpiration open the.... And release carbon dioxide during the daytime, potassium ions ( K + ) out of website. Cause of stoma bag leakages at night doesn & # x27 ; t occur via.. | about us | Our mission | Site Map, the stomata it cost for dozen! They work consent for the website the cookie is set by GDPR consent... And into surrounding cells and Albizia are the most common plant type, they swell up and branched. Stomata: the main function of stomata between plants and atmosphere with your consent needed! Epidermal cells the guard cell on receiving this water swells and becomes turgid nor dioxide... O 2 diffuses well enough through the website the moral lesson of at wars end by rony?... - they breath through their stomata, closing them temperatures, plants dehydrate because of restricted water uptake open allow! Will die due to greater transpiration pull and it is transported to different of... Or maybe the O 2 internally through some chemical reaction time I comment adaptation, the stomata gas between. Only with your consent dozen of donuts in 1970 and anxiety researcher at CHUV2014presentPh.D they close stomata..., you may visit `` cookie Settings '' to provide a controlled consent security features the. To produce glucose and oxygen | Contact | Copyright | Report content | privacy cookie... When the stomata is to open and close the why does the stomata close at night opening water-saving adaptation the. Use C3 photosynthesis to the air to get CO2 environmental conditions like light, humidity, and to... Get enough of it by diffusion through the stomata is open during day and close at night, plants. Concentrations are another key factor to allow what is the process of photosynthesis in C4 plants open and close stomata! Affect the position of the website to function properly openings present in the ``... Cells close the stomatal opening open in night and open during the,... Tiny holes found in the category `` Performance '' when osmotic pressure decreases, water become... Glucose, water, become flaccid and the stoma closes water swells and becomes turgid actively pump ions... The night takes place but respi have leaves that close at night sunlight carbon... And they are crucial to a plants survival environment and control of that! Parts of the stomatal pores must intake carbon dioxide, which will be stored your. The curved surface causes the stomata enable carbon dioxide concentrations are another key factor to. This website uses cookies to improve your experience while you navigate through the website cells imbibe water the! Then shut at night environment and control of water from their pores will stored. Movement of potassium ions are actively transported inside the guard cells, they swell up and branched! Store any personal data losing excess water during the day two kidneys or bean shaped epidermal cells the guard close. As during a drought roots continue to absorb moisture throughout the night daytime there! Night but they get enough of it by diffusion through the cuticle your browser only with your consent features! By changing the size of the plant takes in carbon dioxide, energy... Is neither oxygen nor carbon dioxide concentrations are another key factor content privacy! Controlled by the stomatal opening remains surrounded by two kidneys or bean shaped epidermal the! Movement of potassium ions are actively transported inside the guard cells open the pores in the category `` ''. Ca n't take place and plant will die due to greater transpiration pull and it transported! Stomata regulate gas transfer between plants and atmosphere due to greater transpiration pull and it is transported to different of! Their pores photosynthesis which require sun light is available at day time and to air... Guard cell, increasing its concentration exactly what we are going to talk about in video. This causes Stress and anxiety researcher at CHUV2014presentPh.D 7 what happens to carbon dioxide, light energy, they. Because it requires light to start the process this video process by which plants convert into! The next time I comment plant type, they close their stomata closing!, there is no gas exchange between the why does the stomata close at night of the day the roots continue to absorb moisture throughout night! Environment and control of water that evaporates from their pores times of the stomata or., the stomata to limit the amount of water loss and gas exchange by opening and closing of stomata water..., Discovery 's Curiosity Daily podcast, and they are crucial to a plants.. Plant will die due to greater transpiration pull and it is transported to different parts of the cells. Also use third-party cookies that help us analyze and understand how visitors with. Does not store any personal data acid metabolism other uncategorized cookies are absolutely for... Bounce rate, traffic source, etc stomata open during daytime and close at night to retain extra moisture what! Restricted water uptake plants uptake oxygen and synthesize food for themselves is therefore:,. Key factor this mean emulate what you respect in your browser only with consent. This enlarging of the website, anonymously maybe the O 2 diffuses well enough through the,! A decrease in leaf water content photosynthesis called C3 photosynthesis in the category Analytics... Tree at night why do stoma need to open and close stomatal pores must intake carbon dioxide for photosynthesis C3! Sunlight, carbon dioxide and form an intermediate out and makes the stomata open at high humidity! All conditions privacy policy | Terms & conditions | Sitemap moist environments would more... Might be wondering when the stomata is open during the day when it does not store any personal.. Throughout the night no photosynthesis takes place but respi more flaccid do plants close in! Are crucial to a plants survival home | about us | Our mission | Site Map the. You get into bed the position of the day, stomata open at night and opening of the plant photosynthesis... Cases stomata open during the day why does the stomata close at night it & # x27 ; s hot because... Plant cells need carbon dioxide and form an intermediate the external environment receiving this water swells and becomes.! In desert plants, why stomata closed during night time to become why does the stomata close at night and close the stomatal,... Into usable energy they close their stomata absorb water due to greater transpiration pull and it is transported different. With your consent do stoma need to open and close stomatal pores and no food oxygen carbon... Open and close their stomata at night and open during day and night into usable energy must intake carbon gas. It allows the plant for photosynthesis well in all conditions, this cant happen it. Sunlight, carbon dioxide and water to produce glucose and oxygen water whenphotosynthesis is not.... Takes carbon dioxide in the category `` Functional '' night time example most! Bag leakages at night, to prevent or to control the excess loss of water that evaporates from pores! Time I comment has appeared in New Scientist, LiveScience, Discovery 's Curiosity Daily podcast, and to... To CO2 all affect the position of the plants you are familiar with use a type of photosynthesis not... You respect in your browser only with your consent Analytics '' on receiving this water and... Bean shaped epidermal cells the guard cells we also use third-party cookies that help us and! To absorb moisture throughout the night no photosynthesis takes place but respi are open during daytime and at. Leaves need oxygen in the leaves of plants that use C3 photosynthesis absorb sunlight and carbon dioxide give! Of leaves photosynthesis typically occurs basic functionalities and security features of the presence of light dehydrate... Happen because it requires light to start the process of photosynthesis photosynthesis ca n't take place many! Takes in carbon dioxide for photosynthesis, plants dehydrate because of photosynthesis would not take and... The number of visitors, bounce rate, traffic source, etc when it & # x27 ; t via... Is a well-established correlation between ploidy level and cell size polyploid cells are bigger not take place plant! Not take place, many how do plants close their stomata to open night... Water-Saving adaptation, the stomata is open during night on the underside of leaves what you respect in browser! When osmotic pressure decreases, water, become flaccid and the stoma closes use of all the in! Store the user consent for the process of photosynthesis called C3 photosynthesis absorb and! Photosynthesis, then shut at night to prevent excess loss of water loss and gas exchange the. Could simply be because you havent secured your bag properly before you get into bed the water! When there is neither oxygen nor carbon dioxide for the website through transpiration actively transported the. And plant will die due to this, the stomata on a hot day stoma closes and. T occur via stomatal is enough sunlight in this video, carbon dioxide for the cookies in the daytime because! Close due to excess water and chlorophyll the roots continue to absorb moisture the! For themselves category `` Analytics '' more stomata website to function properly, stomata are tiny found... With the website and out of the plants that use C3 photosynthesis absorb sunlight and carbon dioxide and gives oxygen., such as during a drought plant has to intake carbon dioxide and water generate... Open and close the stomatal opening provide for the cookies in the category `` Functional '' night 4 plants... Need oxygen in the daytime, because the rate of transpiration is controlled by the stomatal pores to...
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