Leaf base 2. Parts of a leaf. 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 main function of the stipule is to protect the leaf in the bud. The lamina contains following parts: (i) Veins: There are various types of lines on the leaf. Small processes located to either side of the base of the petiole are called the stipule. The compound leaves of the family Fabaceae. Leaf base-The basal part of the leaf by which it is attached to the stem at the node is called 'leaf base'. The edge of the lamina is usually referred to as the ‘margin’ of the leaf. Tip Copyright © 2018-2021 BrainKart.com; All Rights Reserved. In many monocotyledons and a few dicotyledons the leaf-base grows into a … leaf apex - the outer end of a leaf; the end that is opposite the petiole. Log in Sign up. The three main parts of a typical leaf are 1. They are borne at the nodes of the stem. This vein is called midrib. Banana. The three main parts of a typical leaf are 1. Phyllotaxy: The arrangement of leaves on the stem or the branches is known as phyllotaxy. https://www.toppr.com/guides/biology/anatomy-of-flowering-plants/leaf They can be in many different forms, i.e. The leaf is a thin, broad, flat and green part of a plant which is attached to the stem or branch. Structure of leaf (1) A leaf consists mainly of two parts lamina … Lamina parts: Leaf a pex: The tip of a leaf opposite to the petiole. Suchswollen leaf bases are called pulvinate leaf bases as seen in mango leaves. A leaf is an above-ground plant organ and it is green. Most leaves have stomata, which open and close.They regulate carbon dioxide, oxygen, and water vapour exchange with the atmosphere. When a well-defined petiole … Science and technology. 3.Tripinnate: In this type the secondary rachis produces the tertiary rachis which bear the leaflets eg. 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) Part # 1. Sub aerial modifications 3. Let us study each of them. Lamina. Within each leaf, the vascular tissue forms veins. Margins: The boundary area extending along the edge of the leaf. The leaves without stipules are called exstipulate. According to the number of leaflets present the compound leaf may be 1. unifoliate (eg. Leaf base is also known as hypanthodium or leaf foundation or leaf cushion or leaf buttress. 7. Stalk that joins the stem to the leaf. The Leaf ICSE Class-6th Concise Selina Biology Solutions Chapter-1 External Parts of a Leaf. These lines are called veins (ii) Midrib: There is a thick vein in the middle of the leaf. Download 41 Leaf Lamina Stock Illustrations, Vectors & Clipart for FREE or amazingly low rates! serrated, parted. Answer: The foliage leaf consists of three parts, namely leaf base, petiole and lamina. Check determinations of the leaf area showed that this relationship held for the plants being studied. Palmately compound leaves, In a pinnately compound leaf, the leaflets are borne on a common axis called the rachis. Lamina or Leaf blade- Is the green flat and broad part of the leaf. Whorled : In this type, more than three leaves are present in a whorl at each node eg. The leaf is a thin, broad, flat and green part of a plant which is attached to the stem or branch. The blade is held away from the stem and sup- The main flat area is called the blade or lamina. See more. Key Takeaways Key Points. Most leaves have two main parts: (1) the blade and (2) the petiole, or leafstalk. Most leaves have two main parts: (1) the blade and (2) the petiole, or leafstalk. b. Palmately parallel venation : In this type several veins arise from the tip of the petiole and they all run parallel to each other and unite at the apex. Lamina may refer to: . Log in. The green leaves of the plant are collectively called as foliage of the plant. 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. Lamina/Blade: This is the blade of the leaf. eg. New users enjoy 60% OFF. (BS) Developed by Therithal info, Chennai. Lamina. Parts of a Leaf, Their Structure and Functions With Diagram eg. Marsilia) 5. Acacia. Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail, Parts of a Leaf : 1. 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. It acts as a leaf cushion. The Blade, or lamina, is the broad, flat part of the leaf. 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. leaf, it closes its two parts and trap the insect. The Lamina. 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. 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. Tip/Leaf Apex: This is the tip of the leaf . In some leaves there is no stipule for example. Leaf base : The part of the leaf which is attached to the stem or a branch is called leaf base. 1. There are three main parts of a leaf – Leaf base, leaf lamina, and petiole. Parallel Venation: In this type of venation all the veins run parallel to each other. The Broad, Green part of the Leaf is called = Lamina. There is awesome variety in leaf structure and some may have all or few of the following parts. It is mainly of two types namely Reticulate venation andParallel venation, 1. 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. Write the two main functions of leaves. Define: (i) Photosynthesis (ii) Transpiration. Leaves of different plants have different shapes and sizes, but all of them have same basic structure. The leaf. (ii) Lamina: The broad, green part of the leaf is called lamina. And the leaves with stipules parts of a leaf lamina called Pulvinate leaf bases as seen mango... Leaf consists mainly of two types namely Reticulate venation andParallel venation, 1 with the stem at ligule! 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