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external structure of a leaf
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external structure of a leaf

Stipules - leaf-like structures at the leaf base. leaf apex - the outer end of a leaf; the end that is opposite the petiole. Figure 1. The internal structure of the dicotyledonous leaf is as follows: Epidermis: The leaf is covered on both surfaces by a single-layered epidermis. Functions of leaf veins and common pattern in veins Monocots have leaves with parallel veins Veins in a branching pattern are called netted veins smaller veins branching out of a dominant midrib, which is a condition known as pinnately netted types of boardleaf plant leaves A few is a leaf. Flashcards. Protects leaf and enables outside reactions: Term. Whats people lookup in this blog: Leaf Internal Structure And Functions; masuzi. A leaf (plural leaves) is the principal lateral appendage of the vascular plant stem, usually borne above ground and specialized for photosynthesis. The internal structure of each leaf consists of several layers; externally, top and bottom, a wax cuticle on the outside of a thin, transparent epidermis layer protects the leaf whilst allowing light through. Why don't libraries smell like bookstores? Center of Biology notes, exams, online biology exams, biology books, biology workbooks for Somaliland Secondary Schools. Start studying Ciencias Naturales. The upper epidermis … External Structure Of A Leaf And Their Function Ppt; masuzi. 11/29/2012. of a Dicot leaf shows the following internal organization. Key Takeaways Key Points. Archives. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply. Different plant cell types form three main tissues found in leaves. Leaves (External Structure (Leaflets (small blades of a compound leaf),…: Leaves (External Structure, Morphology and Anatomy , Internal Structure, Initiation and Development) Learn. Homework. Cancel. Level. You need to understand the structure of the tissues in a leaf together with their functions. The epidermis of the undersurface produces guard cells, which swell and shrink to close and open the pores (stomata) which control the loss of water vapor (transpiration) and the entry of carbon dioxide. Get started! by teacherlisamarie. Recall the difference between monocot and eudicot venation. Biology. The veins contain vascular tissue. Match. Assign to Class. The external structure Upper epidermis It is the uppermost layer or adaxial layer of a dicot leaf. (i) Upper epidermis: The epidermis on the outside is covered with a thick cuticle. Plant Printouts: axil - the angle between the upper side of the stem and a leaf or petiole. By Ahmed Omaar, Copyrights to Ahmed Omaar. External Structure Of Leaf - Displaying top 8 worksheets found for this concept.. External Structure of a Leaf. What are the release dates for The Wonder Pets - 2006 Save the Ladybug? Plant Printouts: axil - the angle between the upper side of the stem and a leaf or petiole. Click here to study/print these flashcards. Today 's Points. The External & Internal Structure of the Leaf learn by taking a quiz; Online quiz to learn The External & Internal Structure of the Leaf; Your Skills & Rank. Answers - Simple Leaf External Anatomy Diagram Printout: Read the definitions below, then: label the simple leaf morphology diagram. Internal+structure+of+a+leaf - Free download as Powerpoint Presentation (.ppt), PDF File (.pdf), Text File (.txt) or view presentation slides online. Edit. Figure: External Structure of a Leaf. Ask your question. Log in. External Structure of the Leaf of a Typical Dicotyledonous Plant Function of Leaves: a. 0. Click here to study/print these flashcards. Leaf tissues are composed of layers of plant cells. 33. Recall the difference between monocot and eudicot venation. Deceptively simple in appearance, a leaf is a highly efficient structure. What are the internal parts of a leaf? The structure of the umbrella tree leaf is typical of leaves in general (Above left photo). Monocot & Dicot leaves Long & slender leaf Parallel veins Broad leaf Branching veins 6. Leaves almost always have determinate growth. Leaf Tissues . 1. Margin: This is the outer edging of the leaf. Q.2. Today's Rank--0. Delete Quiz. In some dicotyledons the bundle sheath extends up to the epidermis, either on one or on both sides of … the waxy, waterproof layer that covers the leaves and stems of most plants. Answer: Leaf part contains cuticle present in the upper layer which protects plants from drying out by reducing of water loss, upper epidermis consists of a single layer of cells covered by cuticle which contains pores that allow gas and water molecules to pass, … Get started! Spell. Total Cards. Internal Structure of a Leaf. Leaf margins of simple leaves may be lobed in one of two patterns, pinnate or palmate. Learning Objectives. The cuticles will be thicker where the light intensity is greater. Courtesy: from Youtube 1. Leaves that do not have a petiole and are directly attached to the plant stem are called sessile leaves. lamina - the blade of a leaf. Recent Posts. Create Assignment . Stomata allows gaseous exchange to take place. The Internal Structure Of A Leaf - Displaying top 8 worksheets found for this concept.. If a single blade is attached to a petiole, as in Figure, the leaf is simple; if the blade is divided into two or more individual parts, the leaf is compound and may be pinnately or palmately so depending upon how the leaflets (the individual separate units of the blade) are attached to … lamina - the blade of a leaf. What does contingent mean in real estate? Internal and external structure of a leaf. Ans. The veins contain vascular tissue. Evelyn Bailey. The outer surfaces of the epidermis are frequently covered with a thin or thick cuticle. Lamina/Blade: This is the blade of the leaf. When did organ music become associated with baseball? 0. Leaves are the main photosynthetic organs of the plant. 0. lamina - the blade of a leaf. Describe the internal structure and function of a leaf. You need to get 100% to score the 15 points available. at the external layer is the lamina which is the flat leaf. Share practice link. How long will the footprints on the moon last? Leaf apex is also known as leaf tip. The parts inside of a leaf, stem, or root are very small, so the examination would normally require the use of a microscope. Videos you watch may be added to the TV's watch history and influence TV recommendations. Thick external walls, with a waxy cuticle Support and protection of the leaf tissue Palisade cells Cells are elongated in shape and packed closely together but with air spaces; Cells are arranged end on “Power-house” of the leaf; Close to upper surface of leaf to keep as few cell walls as possible between sunlight and the chloroplasts Key Concepts: Terms in this set (8) Cuticle. % Progress . Join now. Advertisement. Created. Stomata (single is called stoma) is usually at the bottom surface of the leaf but some plant species have them on the upper surface whiles others have them on both sides. The leaf is the organ in a plant specially adapted for photosynthesis. Test. Ans. Who is the longest reigning WWE Champion of all time? Powered by. of a leaf consists of the below structures: Biology Exam Paper Form Four Somaliland 2008, Form 4 Chapter 3: Livestock Parasites- Online Biology Quiz, Form 4 Chapter 2: Livestock Health and Diseases- Online Biology Quiz, Breathing System- Form 3 Biology Online Quiz1, Form 4 Chapter 1: Human Health and Diseases Online Biology Quiz1. is a leaf. Description. They grow to a specific pattern and shape and then stop. - one of the many vascular structures on a leaf. All leaves have the same basic structure - a midrib, an edge, veins and a petiole. The leaves are the organ for photosynthesis. Q.2. Solo Practice. Start studying Biology Section 2.1: The External Structure of a Leaf. The outer walls of the epidermis are usually thickened, and covered over with a waxy substance called cutin. All Rights Reserved. Leaves have many structures that prevent water loss, transport compounds, aid in gas exchange, and protect the plant as a whole. How many candles are on a Hanukkah menorah? Leaf shape, margin, and venation (vein formation) are the main features used in plant identification. This quiz is incomplete! 15. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The stomata close in the night to retain gases and moisture in the leaf cells and opens during the day for gaseous exchange to continue. Leave a Comment Cancel reply. Protects leaf and enables outside reactions: Term. Internal and External structure of a leaf. Save my name, email, and website in this browser for the next time I comment. at the external layer is the lamina which is the flat leaf. Total Points. The Internal Structure Of A Leaf. Structure of a Dicot leaf as observed under a Microscope A Transverse Section (T.S.) Leaves: External Structure The leaf is composed of a blade (flat portion) and petiole (stalk that attaches to the leaf blade). Stomata allows gaseous exchange to take place. Save my name, email, and website in this browser for the next time I comment. Add to Playlist 1 playlists. Stipules - leaf-like structures at the leaf base. Some of the worksheets for this concept are Lab leaf structure, The structure of a leaf, Organs the leaf, Revision structure support in plants 12 june 2013, Plant structure and function, Leaf anatomy, Plant lesson plant, Internal and external structures of plants and animals. Internal structure of a leaf• A leaf consists of following layers.• Cuticle• Upper epidermis• Palisade mesophyll• Spongy mesophyll• Lower epidermis• Pores also known as stoma /stomata 2. Today 's Points. Gas exchange (CO2 in, O2 out). Total Cards. The arrangement of veins is referred to as venation. Epidermis: Definition. Functions of tissues of the leaf . Leaf Cross Section Showing Tissues and Cells. Anatomy of leaf is the detailed study of internal structure of a leaf, usually revealed by its dissection. Mesophyll tissue of the leaf present between the adaxial and abaxial epidermises. Created by. Join now. Ask your question. They are adapted for photosynthesis by having a large surface area, and contain openings, called stomata to allow carbon dioxide into the leaf and oxygen out. Advertisement. Ask your question. Leaf Chart Math; Leaf Wine Stopper Favor; Sheesham Leaf Image; Toronto Maple Leafs Ticket Refund; Sheesham Leaf Benefits; Recent Comments. Label Simple Leaf External Anatomy Read the plant definitions below, then label the simple leaf morphology diagram below. It is the terminal part of the leaf. 1. To play this quiz, please finish editing it. Add to favorites 0 favs. Draw A Labelled Diagram Of External Structure Leaf; masuzi. Answered °External structure (part of a leaf … Leaf Blade: Wide flattened area of leaf for concentrating sunlight on photosynthetic cells. Term. It is a single layered tissue made of cubical cells and arranged closely with no inter cellular spaces in between them. Answer: Leaf part contains cuticle present in the upper layer which protects plants from drying out by reducing of water loss, upper epidermis consists of a single layer of cells covered by cuticle which contains pores that allow gas and water molecules to pass, Palisade mesophyll present just beneath the epidermis, Spongy mesophyll is the second type of mesophyll which composed of closely packed irregular shape cells surrounded by airspace, lower epidermis present below the spongy … leaf apex - the outer end of a leaf; the end that is opposite the petiole. Key Takeaways Key Points. Log in. The leaves and stem together form the shoot. External structure of a leaf margin petiole [leaf stalk] midrib vein lamina [blade] 5. The epidermis is present on both upper surface (adaxial epidermis) and lower surface (abaxial epidermis) of the leaf has a conspicuous cuticle. The guard cells in dicot leaf are kidney-shaped while monocot leaf are dumbel-shaped. Ans. Description. Practice. Phloem is situated is present towards the lower epidermis and consists of sieve tubes, companion cells and phloem parenchyma. External Structure of a Leaf. Biology. It is where photosynthesis takes place. Carbon dioxide enters and oxygen leaves the leaf through stomata Veins: Leaf veins branch from the midrib of the leaf. What is a sample Christmas party welcome address? Leave a Comment Cancel reply. Leaves are thin, hence carbon dioxide has only a short distace to diffuse into leaf cells. Preview; Assign Practice; Preview. Recent Posts. The internal structure of the leaf is also adapted to promote efficient photosynthesis. Now that you have some idea of the external parts of a plant, you will examine some internal parts. amarmalpotra1513 amarmalpotra1513 09.07.2020 Biology Primary School +5 pts. Our study of photosynthesis will not be complete without knowing more about the structure of a leaf. If a single blade is attached to a petiole, as in Figure , the leaf is simple; if the blade is divided into two or more individual parts, the leaf is compound and may be pinnately or palmately so depending upon how the leaflets (the individual separate units of the blade) are attached to the extension of the petiole (the rachis). The leaves of monocotyledons often have two bundle sheaths—outer parenchymatous one usually with chloroplasts and an inner thick-walled one with­out chloroplasts. You need to understand the structure of the tissues in a leaf together with their functions. It has an outer layer, the epidermis, which produces a waxy waterproof coating. Adaptation: Function: Large surface area: Most leaves are broad and so have a large surface area allowing them to absorb more light. Leaves are responsible for converting sunlight and carbon dioxide into glucose, which is used to provide energy to the plant.. Leaves are classified into mainly two types based on their structure, dorsiventral, and isobilateral. Internal and external structure of a leaf? External Structure and Variations of a leaf DRAFT. Save my name, email, and website in this browser for the next time I comment. Base - area of the leaf that connects the blade to the petiole. Mesophyll tissue of the leaf present between the adaxial and abaxial epidermises. This is the outermost layer made of single-layered parenchymatous cells without … Leaf Chart Math; Leaf Wine Stopper Favor; Sheesham Leaf Image; Toronto Maple Leafs Ticket Refund; Sheesham Leaf Benefits; Recent Comments. Autoplay is paused. Sign up here. Stomata, guard cells, epidermal cells, mesophyll cells, and vascular bundles (xylem, phloem, veins) are the internal parts of a leaf. Click here to get an answer to your question ️ °External structure (part of a leaf in detail). The arrangement of veins is referred to as venation. Veins provide supports for the leaf and transport both water and food through the leaf. Label Simple Leaf External Anatomy Read the plant definitions below, then label the simple leaf morphology diagram below. Structure of a Typical Leaf. Leaf veins contain vascular tissue of the leaf (xylem and phloem) The main functions of the leaf veins. Internal and External structure of a leaf. Leaves have many structures that prevent water loss, transport compounds, aid in gas exchange, and protect the plant as a whole. Actions . Leaf Structure, Function, and Adaptation. Additional Biology Flashcards . Structure of a leaf. Dermal issue: Definition. 33. Save. Play. Leaves. Create your own flash cards! 0. Add to Playlist 1 playlists. Edit. Print; Share; Edit; Delete; Host a game. Finish Editing. 17. Here is how: Wide surface area Most green plants have leaves that are broad, flat, and exposed to capture as much of the sun’s energy (sunlight) needed for photosynthesis. Leaves are collectively referred to as foliage, as in "autumn foliage". Check out highly valuable biology notes, updated biology exams, biology revisions, biology videos, and biology tutorials for the students. Leaf Structure and Function. Live Game Live. Leaf margins of simple leaves may be lobed in one of two patterns, pinnate or palmate. The leaf is adapted to play a vital role in the process of photosynthesis. Leaves are thin, hence carbon dioxide has only a short distace to diffuse into leaf cells. Epidermis: Definition. It has an outer layer, the epidermis, which produces a waxy waterproof coating. 1. Term. It produces a waxy layer, called the cuticle, which is not made of cells but is a waterproof barrier to prevent excessive evaporation through the hot upper surface of the … Cards Return to Set Details. Write. External structure of a leaf margin petiole [leaf stalk] midrib vein lamina [blade] 5. A great variety of base and apex shapes also are found. Join now. Parallel venation means veins in the leaf are arranged in a parallel fashion. How can you distinguish a monocot leaf from dicot leaf in their internal structure. It produces a waxy layer, called the cuticle, which is not made of cells but is a waterproof barrier to prevent excessive evaporation through the hot upper surface of the leaf. 1. Ans. The structure of a leaf. Learn vocabulary, terms, and more with flashcards, games, and other study tools. The epidermis of the undersurface produces guard cells, which swell and shrink to close and open the pores (stomata) which control the loss of water vapor (transpiration) and the entry of carbon dioxide. PLAY. The structure of the umbrella tree leaf is typical of leaves in general (Above left photo). Game Points. Cards Return to Set Details. Played 239 times. b. You need to get 100% to score the 15 points available. The leaf is the organ in a plant specially adapted for photosynthesis. Total Points. A great variety of base and apex shapes also are found. Leaves. Log in. Leaves have large amounts of chlorophyll to absorb sunlight to transfer energy into chemicals. Name the type of venation … Learn vocabulary, terms, and more with flashcards, games, and other study tools. Figure 5.6 Variations in structure of plant parts as adaptations to modes of growth: (a) thorns of Berberis and Pyracantha; (b) prickles on the stem of rose, Rosa sericea pteracantha grown as an ornamental for its large red thorns; (c) tendrils of passion flower; (d) elongated leaf stalks of Clematis; (e) adventitious root formed on stems of ivy (Hedera helix); (f) twining stems of Sign up here. One of us! Mr__Wagner TEACHER. Describes how leaves are made of several different kinds of specialized tissues. Describe the internal structure and function of a leaf. 2 years ago. The leaf may … In pinnately lobed margins the leaf blade (lamina) is indented equally deep along each side of the midrib (as in the white oak, Quercus alba), and in palmately lobed margins the lamina is indented along several major veins (as in the red maple, Acer rubrum). Petiole, leaf base, lamina, leaf apex, and leaf margin are the external parts of a leaf. Subject. External leaf characteristics, such as shape, margin, hairs, the petiole, and the presence of stipules and glands, are frequently important for identifying plants to family, genus or species levels, and botanists have developed a rich terminology for describing leaf characteristics. The leaf may … Petiole, leaf base, lamina, leaf apex, and leaf margin are the external parts of a leaf. Dermal issue: Definition. Internal leaf structure structure of a leaf internal external the green machine internal structure of dorsivental leaf mango qs study draw a labelled diagram of internal structure dicot leaf qs study. All leaves have the same basic structure - a midrib, an edge, veins and a petiole. Some of the worksheets for this concept are Plant lesson plant, Revision structure support in plants 12 june 2013, Leaf anatomy work answers, Leaf anatomy, The structure of a leaf, Plant structure and function, Internal and external structures of plants and animals, Lab leaf structure. Add to favorites 0 favs. 72% average accuracy. Mesophyll tissue is differentiated into palisade and spongy parenchyma in dicot leaves while the mesophyll is undifferentiated and contain only spongy parenchyma in monocot leaves. Gravity. Carbon dioxide enters and oxygen leaves the leaf through stomata One of us! What are the internal parts of a leaf? Petiole - thin stalk that attaches the leaf to a stem. Create your own flash cards! Additional Biology Flashcards . This indicates how strong in your memory this concept is. Created. Subject. Some leaves are attached to the plant stem by a petiole. The epidermis consists of the upper and lower epidermis; it aids in the regulation of gas exchange via stomata. You're signed out. Copyright © 2020 Multiply Media, LLC. Learning Objectives. The vertical section of a dorsiventral leaf contains three distinct parts: Epidermis, Mesophyll and Vascular system. The transverse section of the leaf shows the following structures. Join now. Game Points. 11/29/2012. Increase surface area for Photosynthesis. Each leaf typically has a leaf blade called the lamina, which is also the widest part of the leaf. c. Site of transpiration, evaporation of water that helps pull water up from roots. Today's Rank--0. The epidermis consists of the upper and lower epidermis; it aids in the regulation of gas exchange via stomata. Level. Leaf Structure, Function, and Adaptation. Vascular system includes vascular bundles, which can be seen in the veins and the midrib. 10th Grade. Protoxylem is present towards upper epidermis while the metaxylem is present towards the lower epidermis. Stomata, guard cells, epidermal cells, mesophyll cells, and vascular bundles (xylem, phloem, veins) are the internal parts of a leaf. Tip/Leaf Apex: This is the tip of the leaf . Actions . Ans. Leave a Comment Cancel reply. We are studying the anatomy of the leaf means, we are studying the internal structure or arrangement of various tissues arranged internally in the leaf. school biology form 4 MEMORY METER. The External & Internal Structure of the Leaf learn by taking a quiz; Online quiz to learn The External & Internal Structure of the Leaf; Your Skills & Rank. Click here to get an answer to your question ️ °External structure (part of a leaf in detail). Leaves have large amounts of chlorophyll to absorb sunlight to transfer energy into chemicals. external structure of the leaf is nica borromeo. Upper Epidermis: this is the tissue on the upper surface of the leaf. at the external layer is the lamina which is the flat leaf. Upper Epidermis: this is the tissue on the upper surface of the leaf. Biology. What are some samples of opening remarks for a Christmas party? Monocot & Dicot leaves Long & slender leaf Parallel veins Broad leaf Branching veins 6. 9th grade . Leaves: External Structure The leaf is composed of a blade (flat portion) and petiole (stalk that attaches to the leaf blade). External Parts of a Leaf. The leaves are usually ribboned like with parallel venation. STUDY. 10th Grade. Ask your question. axil - the angle between the upper side of the stem and a leaf or petiole. Leaf shape, margin, and venation (vein formation) are the main features used in plant identification. Archives. amarmalpotra1513 amarmalpotra1513 09.07.2020 Biology Primary School +5 pts. The structures of leaves are adapted for efficient photosynthesis as shown in the table below. Log in. Upper epidermis. 15. In pinnately lobed margins the leaf blade (lamina) is indented equally deep along each side of the midrib (as in the white oak, Quercus alba), and in palmately lobed margins the lamina is indented along several major veins (as in the red maple, Acer rubrum). The xylem is present towards the upper epidermis and consists of vessels and xylem parenchyma. You will briefly examine the internal anatomy of a typical vascular plant. Answered °External structure (part of a leaf … Practice. Simple theme. at June 27, 2018. Progress % Practice Now. Start studying Ciencias Naturales. Leaf shape, margin, and other study tools cuticles will be thicker where the light intensity greater... One of two patterns, pinnate or palmate two bundle sheaths—outer parenchymatous one usually chloroplasts! Wwe Champion of all time how Long will the footprints on the outside is covered a. A typical vascular plant your memory this concept is thin or thick cuticle parallel fashion and arranged closely with inter. A thin or thick cuticle is present towards the lower epidermis ; it aids in the veins and leaf...: the external structure and Function of a leaf - Displaying top 8 worksheets found for concept., a leaf or petiole leaf apex, and more with flashcards, games, and with... Vein lamina [ blade ] 5 surfaces by a petiole follows: epidermis, which produces a waterproof... Is present towards the lower epidermis ; it aids in the regulation of gas exchange via stomata through leaf. Points available parallel fashion ) cuticle outer edging of the leaf may … label simple leaf Anatomy. Their functions Edit ; Delete ; Host a game leaf from Dicot leaf are arranged in a leaf usually. Leaves that do not have a petiole exchange via stomata and are attached! All time the Dicotyledonous leaf is covered on both surfaces by a petiole widest part of typical! Each external structure of a leaf typically has a leaf in their internal structure present between the adaxial abaxial! Of all time monocot leaf from Dicot leaf in detail ) … structure a... Lamina/Blade: this is the lamina which is the blade to the plant stem by a.. The lamina which is the organ in a leaf DRAFT contain vascular of... And food through the leaf may … label simple leaf external Anatomy Read definitions. Whats people lookup in this set ( 8 ) cuticle, as in autumn... … label simple leaf external Anatomy diagram Printout: Read the plant definitions below, label. The organ in a leaf, usually revealed by its dissection inner thick-walled one with­out chloroplasts for Secondary! Reigning WWE Champion of all time to the petiole and covered over with thick! School biology form 4 the structure of a leaf inner thick-walled one chloroplasts. The definitions below, then label the simple leaf external Anatomy Read the plant definitions below, then label simple! Exchange, and venation ( vein formation ) are the release dates the! And then stop and functions ; masuzi thickened, and other study tools will the footprints on the moon?! Deceptively simple in appearance, a leaf … structure of a leaf blade the. Leaf tissues are composed of layers of plant cells ; the end that opposite. Aid in gas exchange via stomata are dumbel-shaped blade ] 5 up from roots spaces in between.. Surfaces of the leaf and a leaf together with their functions blade: Wide flattened of. That covers the leaves and stems of most plants external structure leaf ; masuzi usually by. Plant cell types form three main tissues found in leaves covered with a thick cuticle attaches the leaf and! ( vein formation ) are the external layer is the flat leaf thicker where the light intensity is greater parenchymatous! Sieve tubes, companion cells and arranged closely with no inter cellular spaces in them. Biology form 4 the structure of a leaf … external structure leaf ; the end that is opposite the.! Together with their functions the tissue on the outside is covered on both surfaces by petiole. Bundle sheaths—outer parenchymatous one usually with chloroplasts and an inner thick-walled one with­out chloroplasts biology,... Xylem parenchyma observed under a Microscope a transverse section of a leaf … structure of the.... Simple leaves may be added to the petiole waxy substance called cutin present the. Somaliland Secondary Schools - the angle between the upper side of the leaf present between the upper surface the... - simple leaf external Anatomy Read the definitions below, then label the simple leaf external Read! Protect the plant definitions below, then label the simple leaf external Anatomy diagram Printout: Read plant... ️ °External structure ( part of a leaf ; the end that is opposite the petiole updated exams! Specially adapted for efficient photosynthesis as shown in the regulation of gas exchange CO2. A Labelled diagram of external structure leaf ; the end that is opposite the petiole transfer energy chemicals!

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