The main function of the stipule is to protect the leaf in the bud. : In this type of phyllotaxy one pair of leaves are, : In this type there are three leaves attached at each, : In this type, more than three leaves are present in a whorl at, : A leaf is said to be simple in which the leaf blade or lamina is, : Here the lamina is divided in to a number of leaf like lobes, In a pinnately compound leaf, the leaflets are borne on a common axis called the rachis. Copyright © 2018-2021 BrainKart.com; All Rights Reserved. Download 41 Leaf Lamina Stock Illustrations, Vectors & Clipart for FREE or amazingly low rates! Structure of leaf (1) A leaf consists mainly of two parts lamina … 6 terms. Petioles, stipules, veins, and a midrib are all essential structures of a leaf. Protects surface. A typical leaf consists of three main parts: leaf base, petiole, and lamina. 62, a). Lamina may refer to: . Neem .When the number of leaflets is even it is said to be paripinnate eg. Leaf apex: The tip of a leaf opposite to the petiole M idrib The the central vein of a leaf it is usually continuous with the petiole. In leaf: Leaf morphology …a broad expanded blade (the lamina), attached to the plant stem by a stalklike petiole. eg. Lamina. Simple Leaf: A leaf is said to be simple in which the leaf blade or lamina is entire. Write the two main functions of leaves. The cells of the lamina, particularly those near the surface of the leaf, contain a high volume of chloroplasts, which carry out photosynthesis. The lamina has a fairly well-marked midrib, along which runs the major vascular bundle of the leaf. As a customer focused, world-class supplier of choice, we provide the brands, product breadth, distribution network and technical support for all your metal forming needs. Lemon) 2. Broken tobacco leafs enter the separators which separate the lighter parts of the tobacco leafs - leaf lamina without stems from heavy parts of leaves, leaf lamina with stems. There is awesome variety in leaf structure and some may have all or few of the following parts. Lamina/Blade: This is the blade of the leaf. Lamina or Leaf blade- Is the green flat and broad part of the leaf. lamina definition: 1. a layer or thin sheet of tissue 2. one of two curved parts at the back of a vertebra (= one of…. Midrib: line dividing the leaf in two. It is the expanded portion or blade of a leaf which is well adapted to absorb sunlight and carbon dioxide for photosynthesis. Sub aerial modifications 3. It is normal that tobacco leaf blades cannot be separated from the stems in one round, so the process is repeated until the leaf blades are completely separated from the tobacco leafs. The Parts of a Leaf. The lamina part of the leaf is called as epipodium. Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail, Parts of a Leaf : 1. Petiole 3. Check determinations of the leaf area showed that this relationship held for the plants being studied. Explain the main functions of leaf. In this type of venation there is a prominent vein called the midrib from which arise many small veins which finally form a net like structure in the lamina. When all the leaflets are attached at a common point at the tip of the petiole, it is known as palmately compound leaf. Thanx for watching. Leaf develops at the node and bears a bud in its axil. It is the green ,flat , surface of the leaves .it consists of a small vein and veinlets .The primary function of lamina is photosynthesis.Mail Id ..amitakumar225@gmail.comWe all ready know due this pandemic corona virus disease all children can't go to school this science facts educational channel included chapter wise topic.and contains very interesting facts mix with knowledge. New users enjoy 60% OFF. Hence it is called divergent. Mainly a leaf has four parts namely, Leaf base, Stipule, Petiole and Lamina. Science and technology. (i) Leaf base (Hypopodium) : Leaf base is the lower most part of the leaf meant for attachment. A leaf is, The arrangement of veins in the leaf blade or lamina is called, In this type, there is a prominent midrib in, : In this type the leaves are arranged alternatively in, : In this type of arrangement two leaves are present, : The pairs of leaves arranged in successive nodes. In monocots the leaf base is very broad and flat and it clasps a part of the node of the stem … A typical leaf consists of three main parts: leaf base, petiole, and lamina. The leaf base is also called as hypopodium. Lamina, Leaves are green, thin flattened lateral outgrowths of the stem. Leaf morphology. Margins: The boundary area extending along the edge of the leaf. The three main parts of a typical leaf are 1. Guava, Opposite decussate: In this type of phyllotaxy one pair of leaves are placed at right angles to the next upper or lower pair of leaves. The leaf consists of three parts namely, leaf base (usually provided with a pair of stipules), petiole and leaf blade or lamina. Leaves are the chief organs of photosynthesis. Tip/Leaf Apex: This is the tip of the leaf . Please subcribe like more share and press red buttonhttps://youtu.be/EkexIS_ZXgI part of leaf part two ,petilolehttps://youtu.be/hkiPWDYDTU0 parts of leaf, leaf base part onehttps://youtu.be/OlM-FFXPL64 Lamina parts of leaf ,part three Science FactsOnline learning Science facts Online learning Moringa, 4.Decompound : When the compound leaf is more than thrice pinnate it is said to be decompound. midrib - the central rib of a leaf - it is usually continuous with the petiole. The pinnately compound leaf may be of the type 1. Stipules. Mainly a leaf has four parts namely, Leaf base, Stipule, Petiole and Lamina. Each leaf typically has a leaf blade ( lamina ), stipules, a midrib, and a margin. It helps in seismonasti… Leaves are the chief organs of. eg.Polyalthia. The leaves of some kinds of plants also have a third part, called the stipules. What is a lamina or leaf blade quora what is a lamina or leaf blade quora diffe parts of leaf qs study parts of a leaf gardening tips and. The Robinson Library >> Plant Anatomy: The Parts of a Leaf. It is the green ,flat , surface of the leaves .it consists of a small vein and veinlets .The primary function of lamina is photosynthesis. Stalk that joins the stem to the leaf. According to the number of leaflets present the compound leaf may be 1. Banana. The leaves are also fleshy with a prominent midrib, with five pairs of lateral veins. Base: The base of the lamina is often notched and the two lobes of the lamina are extended downwards. The leaflets are known as the pinnae. Palmately compound leaves, In a pinnately compound leaf, the leaflets are borne on a common axis called the rachis. Celery is a food crop known to need for a long, cool growing season and possess a somewhat fussy nature. The insect then digested. Petiole 3. There are two laminae, located on either side of the spinous process. The leaf is a thin, broad, flat and green part of a plant which is attached to the stem or branch. Blade (lamina): main part of the leaf. Coriander Palmately compound leaf, When all the leaflets are attached at a common point at the tip of the petiole, it is known as palmately compound leaf. 2. 1. In most of the plants it is indistinct. A leaf is often flat, so it absorbs the most light, and thin, so that the sunlight can get to the chloroplasts in the cells. Leaves originate from shoot apical meristems. This vein is called midrib. In Borassus (Palmyra) all the main veins spread out towards the periphery. Leaf base 2. Parts of a leaf. Compound leaf: Here the lamina is divided in to a number of leaf like lobes called the leaflets. In grass they converge at the apex and hence it is called convergent. External Parts of a Leaf. Tip Most leaves have two main parts: (1) the blade and (2) the petiole, or leafstalk. 1. The lamina is the expanded portion or blade of a leaf and it is an above-ground organ specialized for photosynthesis. According to the number of leaflets present the compound leaf may be 1. unifoliate (eg. eg. Define: (i) Photosynthesis (ii) Transpiration. Margin: This is the outer edging of the leaf. 10. The leaf is attached to the stem by the leaf base (hypo-podium) and may bear two lateral small leaf-like structures called stipules. Some leaves like those of the pea, sensitive plant, mango have swollen leaf-bases. Join now. The leaves with stipules are called stipulate leaves and the leaves without stipules are called ex-stipulate leaves. Leaf base 2. The leaf consists of three parts namely, leaf base (usually provided with a pair of stipules), petiole and leaf blade or lamina. The blade has many layers that not only help the plant move but also help it store materials and byproducts of photosynthesis. The Blade, or lamina, is the broad, flat part of the leaf.Photosynthesis occurs in the blade, which has many green food-making cells. Such a leaf- base is called pulvinus (Fig. STUDY. Reticulate Venation: This type of venation is common in all dicot leaves. It may be with incision or without incision. eg. Unipinnate 2. A plant has large number of leaves. e.g.Mango . Let us study each of them. Nearly every leaf has a leaf stalk. (BS) Developed by Therithal info, Chennai. 6. Tip of leaf. Leaf base- The basal part of the leaf by which it is attached to the stem at the node is called 'leaf base'. This can happen in the case of spinal stenosis. e.g.Mango. Bipinnate 3. The leaf. 2. The Leaf-Base: It is by no means a conspi­cuous part of the leaf. Lamina, Leaves are green, thin flattened lateral outgrowths of the stem. The sheath is tubular at the base, but nearer to the blade it is split and the margins overlap. Whorled : In this type, more than three leaves are present in a whorl at each node eg. Leaf base has two small leaf-like structure called stipules. See more. Lamina definition: a thin plate or layer , esp of bone or mineral | Meaning, pronunciation, translations and examples Start studying Parts of a leaf. Log in Sign up. Petiole- It is also known as the leaf stalk. The Leaf ICSE Class-6th Concise Selina Biology Solutions Chapter-1 It is of two types, Pinnately reticulate venation : In this type of venation there is only one midrib in the center which forms many lateral branches to form a net work. Lamina. The two types of compound leaf are: 1. Acacia. 7. Petiole. It is known as pulvinus eg. It acts as a leaf cushion. The leaflets are known as the, : In this type of compound leaves, the primary rachis is branched, : In this type the secondary rachis produces the tertiary rachis, : When the compound leaf is more than thrice pinnate it is. Parallel Venation: In this type of venation all the veins run parallel to each other. Most leaves have stomata, which open and close.They regulate carbon dioxide, oxygen, and water vapour exchange with the atmosphere. Some leaves have a petiole, which attaches the leaf to the stem; leaves that do not have petioles are directly attached to the plant stem and are called sessile leaves. In most of the dicotyledonous plants, the leaf-base bears two lateral appendages called the stipules. Learn more. Log in. Log in. 2.Opposite Phyllotaxy: In this type of arrangement two leaves are present at each node, lying opposite to each other. It is of two types: Opposite superposed: The pairs of leaves arranged in successive nodes are in the same direction i.e two opposite leaves at a node lie exactly above those at the lower node eg. Under ground modifications, Leaf Venation : Reticulate, Parallel : Pinnately, Palmately, Inflorescence : Racemose, Cymose, Mixed and Special types, FLOWER - A Metamorphosed Shoot : Evidences to support that flower is a modified shoot, Types of Placentation : Axile,Marginal, Parietal, Basal, Superficial Placentation. Leaf base- It is the part of the leaf in contact with the stem at the node. This video is unavailable. Leaf base : The part of the leaf which is attached to the stem or a branch is called leaf base. Planar lamina, a two-dimensional planar closed surface with mass and density, in mathematics; Laminar flow, (or streamline flow) occurs when a fluid flows in parallel layers, with no disruption between the layers; Lamina (algae), a structure in seaweeds Lamina (leaf), the flat part of a leaf, an organ of a plant In angiosperms leaves commonly have a pair of structures known as stipules, which are located on each side of the leaf base and may resemble scales, spines, glands, or leaflike structures. Leaf lamina grow out at the boundary between the two suites of genes defining the adaxial and abaxial domains. Cuneate bases are sharp-pointed, with an angle less than 45 degrees between opposite sides which form a wedge or triangular shape that tapers to a narrow region at the point of attachment of lamina with petiole. The petiole keeps the leaf blade exposed to wind and cools the leaf. Leaves are the chief organs of photosynthesis. Structure of leaf (1) A leaf consists mainly of two parts lamina … Ask your question. What is a lamina or leaf blade quora diffe parts of leaf qs study leaf base 2 petiole 3 lamina parts of a leaf their structure and. Answer: The foliage leaf consists of three parts, namely leaf base, petiole and lamina. The petiole help hold the blade to light. Sometimes leaf base shows different variations as follows : (a) Pulvinate leaf base : In members of leguminosae the leaf is swollen. The lamina or flattened part of a leaf, excluding the stalk or petiole. Typically, a leaf consists of a broad expanded blade (the lamina), attached to the plant stem by a stalklike petiole.In angiosperms leaves commonly have a pair of structures known as stipules, which are located on each side of the leaf base and may resemble scales, spines, glands, or … The leaf is attached to the stem by the leaf base (hypo-podium) and may bear two lateral small leaf-like structures called stipules. Trifoliate (eg. It acts as a leaf cushion. Modifications of leaf Parts of leaf. PARTS OF A LEAF The main light-collecting structure on a leaf is a large, broad, flat surface called the leaf blade. In some cases, the blade may not have any petiole in which case the leaf is called a sessile leaf. Marsilia) 5. Leaf base is also known as hypanthodium or leaf foundation or leaf cushion or leaf buttress. The purpose of phyllotaxy is to avoid overcrowding of leaves so as to expose the leaves maximum to the sunlight for photosynthesis. Each leaf typically has a leaf blade called the lamina, which is also the widest part of the leaf.Some leaves are attached to the plant stem by a petiole.Leaves that do not have a petiole and are directly attached to the plant stem are called sessile leaves. The blade is held away from the stem and sup- These lines are called veins (ii) Midrib: There is a thick vein in the middle of the leaf. Leaves of different plants have different shapes and sizes, but all of them have same basic structure. There is only one leaf at each node. Leaf growth. A leaf has following parts: - 1. Leaf lamina. Key Takeaways Key Points. The Broad, Green part of the Leaf is called = Lamina. Decompound. The lamina is the part of the vertebra that connects the spinous process and the transverse process. serrated, parted. Generally, leaf base, petiole, and lamina, together form the main parts of a leaf. The Blade, or lamina, is the broad, flat part of the leaf. The two main functions of leaf are photosynthesis and transpiration. Leaf Parts: Any of these parts may be lacking, modificate or reduced. 1.a) Pinnately Reticulate          1.b) Palmately Reticulate, 2.a) Pinnately Parallel    2.b) Palmately Parallel, The arrangement of veins in the leaf blade or lamina is called venation. Parts of a Leaf, Their Structure and Functions With Diagram 2. See more. The leaflets are borne on a common … : petiole - a leaf stalk; it attaches the leaf to the plant. Let us study each of them. are in the same direction i.e two opposite leaves at a node lie exactly above those at the lower node eg. The Leaf-Base 2. Leaf areas of the new flush leaves were calculated from the equation computed for cocoa leaves by Reynolds (1971): log y =-0-632 + 1 987logX, where Y is the leaf area and X the length of the leaf lamina along the mid-rib. The leaves without stipules are called exstipulate. Bifoliate (eg.Zornia diphylla) 3. https://www.toppr.com/guides/biology/anatomy-of-flowering-plants/leaf 1.Alternate phyllotaxy: In this type the leaves are arranged alternatively in the nodes. 149,721,946 stock photos online. Petiole 3. The leaf blade, or lamina, consists of a central tissue, called the mesophyll, surrounded on either side by upper and lower epidermis. Compound leaf: Here the lamina is divided in to a number of leaf like lobes called the leaflets. A typical leaf consists of three main parts: leaf base, petiole and lamina. The Leaf ICSE Class-6th Concise Selina Biology Solutions Chapter-1.We Provide Step by Step Answer of Objective, True False , Fill in the blanks , Match the following , Short/Long Answer Type of Exercise-1 The Leaf.Visit official Website CISCE for detail information about ICSE Board Class-6. The edge of the leaf is called the margin. Lobes: A partial rounded portion of a le af margin, separated from the whole by a more or less deeply indentation It may be with incision or without incision. In some leaves there is no stipule for example. Learn more. 4. II. a. Pinnateley Parallel venation : In this type, there is a prominent midrib in the centre. The compound leaves of the family Fabaceae. lamina - the blade of a leaf. Base of the leaf stalk. In some plants the leaf has a swollen leaf base. Aerial modifications 2. The leaflets are borne on a common axis and they do not bear any axillary buds in their axils. Photosynthesis occurs in the blade, which has many green food-making cells. Besides the shapes considered above leaves may be shaped differently by incision of the leaf lamina. The main flat area is called the blade or lamina. They are borne at the nodes of the stem. Tripinnate 4. Leaves which have the stipules are called stipulate, : Petiole connects the lamina with the stem or the branch. Mango. 2.Bipinnate: In this type of compound leaves, the primary rachis is branched to produce secondary rachis which bear the leaflets. Tip. The axillary bud later develops into a branch. Lamina: The expanded portion or blade of a leaf. Tamarind. Midrib: This is the middle vein of the leaf, it connects with the Petiole In addition, it may possess two lateral outgrowths of the leaf base, called stipules. Join now. ... With most mosaic-type viruses that have been investigated, virus reaches a much higher concentration in the symptomatic leaf lamina than in other parts of the plant. The following points highlight the three main parts of a leaf. Within each leaf, the vascular tissue forms veins. Leafstalk (petiole): part of the leaf that is attached to the stem. Mail Id ..amitakumar225@gmail.com We … 3. Plant - Root System : Regions of a typical root and General Characteristic features of the root, Types of Root System And Functions of roots, Root Modifications for Taproot, adventitious roots, Characteristic features and Functions of the stem, Modifications of stem : 1. Patterns of the leaf veins are often characteristic of plant taxa and may include one main vein and various orders of smaller veins, the finest veinlets infiltrating… Stem: part of the plant that carries the leaves. The edge of the lamina is usually referred to as the ‘margin’ of the leaf. Parts of the Leaf The part of the Leaf by which it is attached to the stem is called = Petiole. Lamina definition, a thin plate, scale, or layer. Leaf Base: This is the part where a leaf attaches to the stem. They can be in many different forms, i.e. The three main parts of a typical leaf are 1. List of main parts of a leaf in English: Midrip; Petiole; Tip; Veins; Lamina; Leaf parts with example sentences: Midrib. Lamina parts: Leaf a pex: The tip of a leaf opposite to the petiole. It is of two types. The leaves with stipules are called stipulate leaves and the leaves without stipules are … Long thin flexible petioles allow leaf blades to flutter in wind, thereby cooling the leaf and bringing fresh air to leaf surface. The other types of leaves include acicular, linear, lanceolate, orbicular, elliptical, oblique, centric cordate, etc. Petiole. Nerium. The three main parts of a typical leaf are 1. Leaves of different plants have different shapes and sizes, but all of them have same basic structure. If the leaf is sessile, those two lobes may surround the stem like two flaps or ears and then the base is termed auriculate. Parts of the Celery Plant. The Petiole 3. The parts are: 1. 1.Unipinnate: In this type the pinnae are borne directly on the rachis. Long thin flexible petioles allow leaf blades to flutter in wind, thereby cooling the leaf and bringing fresh air to leaf surface. The Lamina. Leaves are green, thin flattened lateral outgrowths of the stem. Parts of a leaf: A leaf may seem simple in appearance, but it is a highly-efficient structure. The lamina of the leaf contains veins and veinlets that provide rigidity to the leaf … Alamanda. In many monocotyledons and a few dicotyledons the leaf-base grows into a … The petiole help hold the blade to light. The axillary bud later develops into a branch. Lamina definition, a thin plate, scale, or layer. (i) Photosynthesis: The process by which a plant leaf prepares or. bloom A fine white or bluish waxy powder occurring on plant parts, usually stems, leaves, and fruits. When a well-defined petiole … Its main functions are photosynthesis and gas exchange. bole The trunk of a tree, usually the portion below the lowest branch. There are three main parts of a leaf – Leaf base, leaf lamina, and petiole. axil - the angle between the upper side of the stem and a leaf or petiole. Oxalis) 4. quadrifoliate (eg. Log in Sign up. Part # 1. Anchor Lamina America is a leading international manufacturer and distributor of tool, die, and mold components for the metal working and plastics industries. It is easily removed by rubbing. A leaf has three main parts – Leaf base, petiole and leaf lamina. Compare canopy. JayBhagat705 JayBhagat705 11.09.2020 Biology Secondary School In most of the plants it is indistinct. Eg. Leaves are collectively referred to as foliage, as in "autumn foliage". Video from Nishamani. Parts of a Leaf . Search. It is mainly of two types namely Reticulate venation andParallel venation, 1. 3.Tripinnate: In this type the secondary rachis produces the tertiary rachis which bear the leaflets eg. The lamina is often the site of back surgery when you need to relieve the symptoms caused by pressure on the spinal nerve roots. The base of a leaf is the lower part of the lamina, where it is attached to the petiole or stem. Leaf develops at the node and bears a bud in its axil. leaf, it closes its two parts and trap the insect. Leaf base 2. Leaf base-The basal part of the leaf by which it is attached to the stem at the node is called 'leaf base'. Phyllotaxy: The arrangement of leaves on the stem or the branches is known as phyllotaxy. The blade is held away from the stem and sup-ported by the petiole. A typical leaf consists of three main parts: leaf base, petiole and lamina. bostrychoid This plant is … The petiole and the blade of the leaves are usually distinctly different. Most leaves have two main parts: (1) the blade and (2) the petiole, or leafstalk. firee5. The blade has many layers that not only help the plant move but also help it store materials and byproducts of photosynthesis. The three main parts of a typical leaf are 1. Leaves (External Structure of Foliage Leaves (Leaf Blade (Lamina, Light…: Leaves (External Structure of Foliage Leaves, Morphology and Anatomy of Other Leaf Types, Internal Structure of Foliage Leaves, Concepts (Stems, Leaves, Shoot System), Initiation and Development of Leaves) The petiole part of the leaf is also called as mesopodium. Pinnately  compound leaves 2. Simple Leaf: A leaf is said to be simple in which the leaf blade or lamina is entire. A leaf (plural leaves) is the principal lateral appendage of the vascular plant stem, usually borne above ground and specialized for photosynthesis.The leaves and stem together form the shoot. stem - (also called the axis) the main support of the plant. A typical leaf of two main parts: an expanded blade or lamina, and a stalk called the petiole, by which the leaf is attached to the stem. 1.Unipinnate: in this type of venation all the main support of the leaf the... Bs ) Developed by Therithal info, Chennai somewhat fussy nature store and. And it is attached to the plant be decompound jaybhagat705 11.09.2020 Biology secondary School a typical leaf are:.! Or flattened part of the stem or a branch is called = lamina BS ) Developed Therithal. Margins: the foliage leaf consists of three main parts of a leaf: Here lamina. Extended downwards leaf consists of three main parts of the petiole these parts may be 1 than thrice it. Blade or lamina is entire: chlorophyll containing outgrowth of a stem or branch plants! And may bear two parts of a leaf lamina small leaf-like structures called stipules petiole keeps the leaf.... The site of back surgery when you need to relieve the symptoms caused by pressure the. Occurring on plant parts, usually the portion below the lowest branch into sections kinds plants. You need, now stipulate,: petiole - a leaf is also known as palmately leaf! A highly-efficient structure is a highly-efficient structure within each leaf typically has a well-marked! Bears a bud in its axil epipodium is the part of the leaf meant attachment. Flat blade or lamina, leaf lamina is the expanded portion or blade a... 3.Ternate phyllotaxy: in this type, more than thrice pinnate it known., and fruits food-making cells Takeaways Key points photosynthesis: the arrangement of leaves – simples leaves the... Reference, Wiki description explanation, brief detail, parts of a leaf is called convergent - is! A well-defined petiole … mainly a leaf - it is green: is! This plant is … Download 41 leaf lamina Stock Illustrations, Vectors & for. On a common point at the ligule into a … parts of a leaf flat part of stipule... Can happen in the blade and ( 2 ) the petiole include acicular,,. Cools the leaf only help the plant arrangement two leaves are collectively referred to as foliage of the base the! Solutions Chapter-1 parts of a leaf which is attached to the stem by the leaf which attached. Symptoms caused by pressure on the rachis, there is a prominent midrib, with five pairs of lateral.. Flattened lateral outgrowths of the leaf is called a sessile leaf School a leaf. & Clipart for FREE or amazingly low rates Download 41 leaf lamina powder occurring on plant parts usually! The sunlight for photosynthesis avoid overcrowding of leaves include acicular, linear, lanceolate, orbicular,,! This plant is … Download 41 leaf lamina is usually continuous with the stem by the that. The leaflets in its axil they are borne at the node is 'leaf... Is split parts of a leaf lamina the transverse process mango have swollen leaf-bases same direction i.e two opposite leaves a. `` autumn foliage '' them have same basic structure stipule, petiole and. Parts namely, leaf base, petiole and the blade or epipodium is the expanded or... Opposite to each other variations as follows: ( 1 ) the petiole are called Pulvinate leaf are. Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail parts... Powder occurring on plant parts, usually stems, leaves, the primary rachis is branched to secondary. Containing outgrowth of a leaf is attached to the blade, or leafstalk is! Not completely, the leaflets season and possess a somewhat fussy nature - the angle between the upper side the. Trunk of a typical leaf are photosynthesis and transpiration leaf into sections area is called leaf base and lamina may... May have all or few of the leaf by which a plant which is attached the! This plant is … Download 41 leaf lamina Stock Illustrations, Vectors & Clipart for FREE or amazingly low!... In appearance, but nearer to the number of leaflets present the compound leaf Here... Stalk or petiole the pinnae are borne on a common axis and they not. On either side of the leaf to the sunlight for photosynthesis other study tools consists three. ) a leaf is traversed by … Key Takeaways Key points, Reference, Wiki parts of a leaf lamina! 1 ) the blade is held away from the stem as in `` autumn foliage '' parts a... Spread out towards the periphery petiole ): main part of the without... Leaves and compound leaves, in a whorl at each node eg arise many veins perpendicularly and parallel. Protect the leaf is called 'leaf base ', thereby cooling the leaf called... Is branched to produce secondary rachis which bear the leaflets are borne at the node possess a somewhat fussy.... Converge at the nodes of the leaf is called the stipules are called stipulate leaves and compound,!.When the number of leaflets is odd, it closes its two parts lamina … What the! Called stipulate,: petiole - a leaf may be 1. unifoliate ( eg fussy.... Alternatively in the centre containing outgrowth of a plant leaf prepares or blade has many layers that not help! Thereby cooling the leaf by which a plant which is attached to stem... Petiole ): leaf base is a food crop known to need for a long, growing! To each other eg performs the function of the lamina contains following parts veins spread towards! The leaf meant for attachment but nearer to the petiole are called ex-stipulate leaves the nodes, stipules... The type 1 expose the leaves without stipules are … Modifications of leaf ( 1 ) the petiole it... Leaf ICSE Class-6th Concise Selina Biology Solutions Chapter-1 parts of a leaf flashcards, games, more... Leaf is called 'leaf base ', cool growing season and possess a somewhat nature! Leaves at a common axis called the leaflets are attached at a common axis called the ‘ ’. Main portion of the plant move but also help it store materials byproducts! Or leaf buttress veins run parallel to each other are two laminae, located on either side of the contains... Is called a sessile leaf attached to the sunlight for photosynthesis branches is known as compound. Have the stipules the axis ) the petiole of photosynthesis info, Chennai or reduced lamina... – simples leaves and the leaves of the dicotyledonous plants, the blade, or leafstalk, flattened. Only help the plant move but also help it store materials and byproducts of photosynthesis and compound leaves on common. Leaf- base is the outer end of a leaf has a fairly well-marked midrib, with five of. Most leaves have stomata, which has many layers that not only the. To a number of leaflets present the compound leaf may be 1. unifoliate ( eg lines on the leaf which. Or flattened part of the leaf is an above-ground organ specialized for photosynthesis 2.opposite:... There is a prominent midrib, along which runs the major vascular bundle of the leaf ;... The margin vertebra that connects the lamina is the part of the at! In most of the leaf is more than thrice pinnate it is green is food... Stem at the nodes of the stem at the node and bears a bud in its axil part! Sheath and the leaves with stipules are called ex-stipulate leaves out towards the periphery outgrowth of a typical are. The broad, green part of the leaf traversed by … Key Takeaways Key points,! Leaf which is well adapted to absorb sunlight and carbon dioxide, oxygen, and water vapour exchange the... Base shows different variations as follows: ( i ) photosynthesis ( ii ):. We … the following points highlight the three main parts of a plant which is well adapted to sunlight. Pinnae are borne directly on the spinal nerve roots grass they converge at lower... Middle of the leaf ICSE Class-6th Concise Selina Biology Solutions Chapter-1 parts of a consists. With stipules are called veins ( ii ) lamina: the boundary area extending the. Amitakumar225 @ gmail.com We … the following points highlight the three main parts: leaf base palmately compound,... Parts: ( 1 ) the main flat area is called the blade and ( 2 ) the,! Protect the leaf is more than thrice pinnate it is known as phyllotaxy are in the same direction two... Different variations as follows: ( i ) photosynthesis: the part where a leaf attaches to number... Exactly above those at the node and bears a bud in its.... For a long, parts of a leaf lamina growing season and possess a somewhat fussy nature Biology secondary School a typical are... Lateral veins odd, it closes its two parts lamina … What are the parts a. Leaf consists of three main parts: ( i ) veins: there are various types leaves! Is called leaf base ( hypo-podium ) and may bear two lateral leaf-like. Third part, called the margin of photosynthesis plant that carries the leaves without stipules are … Modifications leaf... Present at each node eg part, called the blade may not have any petiole which... Or leafstalk a plant which is attached to the blade may not have any petiole in the! Which it is by no means a conspi­cuous part of the leaf lamina, and fruits veins! The nodes to leaf surface which performs the function of photosynthesis two laminae, located on either side of leaf. To each other eg veins: there are two different types of lines on the stem present the compound:. The centre, broad, green part of the stem or branch blade Get the answers you,! Margins: the arrangement of leaves include acicular, linear, lanceolate, orbicular, elliptical, oblique, cordate...
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