Wiki User Answered . Available cultivars include: ‘Gyokuruu’, dark green grass-like foliage, two inches tall; ‘Nana’, compact, slow-growing, four to five inches tall; ‘Shiroshima Ryu’, dark green and white striped leaves, three to four inches tall; and ‘Variegatus’, green and white striped leaves. are in the same direction i.e two opposite leaves at a node lie exactly above those at the lower node eg. Fig. Here stipules are modified into spines. E.g., ginger. Tamarind. 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. Which of the following turf grasses has folded vernation, boat shaped leaf tips, a somewhat long white ligule, and is a lighter green color? Reticulate venation: If the design is net-like on both sides of midrib, the venation is called reticulate venation. (a) Banana (b) Mango (c) Banyan ... e.g, monocot plants like banana, grass, maize and wheat leaves. If the leaflets are odd in number then it is said to be imparipinnate. E.g., peepul (Ficus), mango (Mangifera). Palmately compound leaves are of the following types: A single leaflet is articulated to the petiole. E.g., Palmyra palm. In some plants, the entire leaf is modified into a tendril. Stipules 4. Phyllotaxy 5. 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. : 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. According to the number of leaflets present the compound leaf may be 1. In leaves with reticulate venation, the veins are arranged in a net €“ like pattern. 2.Opposite Phyllotaxy: In this type of arrangement two leaves are present at each node, lying opposite to each other. Describe the modification of leaves in any one insectivorous plant. In this plant the leaf falls off at the seedling stage and the phyllode does the function of a leaf. Planting month for zone 8: year round. Trifoliate (eg. There are three principal types of phyllotaxy: Here a single leaf is produced at each node alternately on the stem. Examples: Grains, Musa, Grass, Oryza, banana, canna, maize. E.g., Ficus, Magnolia. Type of leaf venation is characteristics of monocots. Such a leaf is said to be tripinnate. a. Pinnateley Parallel venation : In this type, there is a prominent midrib in the centre. There is only one leaf at each node. Decompound. Correct the following statements and rewrite them in your notebook. E.g., sweet pea (Lathyrus), pea (Pisum). The arrangement of the leaves in various modes at the nodal region of the stem is called phyllotaxy. Leaves have unique structures, called veins, that transport liquids and nutrients to leaf cells. Reticulate venation: If the design is net-like on both sides of midrib, the venation is called reticulate venation. A leaf is said to be compound when the incision of the leaf-blade goes down to the midrib (rachis) or to the petiole so that the leaf is broken up into a number of segments, called leaflets. Leaves. Study Material, Lecturing Notes, Assignment, Reference, Wiki description explanation, brief detail, Leaf Venation : Reticulate, Parallel : Pinnately, Palmately. It is a leaf in which the secondary rachii are branched to form tertiary rachii which in turn bear the leaflets. Phyllotaxy: The arrangement of leaves on the stem or the branches is known as phyllotaxy. A leaf which bears a number of leaflets which seem to be radiating from a common point on the tip of the petiole. They have been recognized as a natural group since the sixteenth century when Lobelius (1571), searching for a characteristic to group plants by, decided on leaf form and their venation. E.g., Hibiscus, mustard. E.g., rose, pea. E.g., Zizyphus. 7.2 15. When the number of leaflets is odd, it is said to beimparipinnate eg. Reticulate Venation: This type of venation is common in all dicot leaves. Parallel venation: In the leaves of grass, the veins are parallel to one another. Parallel venation: In the leaves of grass, the veins are parallel to one another. McSush/Wikimedia Commons/CC BY 3.0. A leaf with three leaflets articulated to the tip of the petiole. From this arise many veins perpendicularly and run parallel to each other eg. On the basis of their structure and relation to the leaf, stipules may be of the following types: The two stipules are free and are borne on the two sides of the leaf base. E.g., Polygonum. 7.37.3Fig. Such a leaf is said to be decompound. Leaf Venation. Most observed features of leaf venation patterns (closed loops, freely ending veinlets, parallel veins) and their ontogenetic sequence of appearance can be produced by computational models. Thin transverse (horizontal) veins may connect large veins. Pinnately compound leaves are of the following types: When the rachis of a pinnately compound leaf bears the leaflets, it is said to be unipinnate. A pair of leaves at one node stands directly over the lower pair in the same plane. Aerial modifications 2. 2.Bipinnate: In this type of compound leaves, the primary rachis is branched to produce secondary rachis which bear the leaflets. Calotropis, 3.Ternate Phyllotaxy : In this type there are three leaves attached at each node eg. A unipinnate leaf is said to be paripinnate if the leaflets are even in number. Stipules may be classified into the following three types based on the duration for which they remain attached to the leaf base: When the stipules fall off before the unfolding of leaf, they are called caducous. These are permanent stipules which remain attached to the leaf for the whole of its life. Grass Peepal China Rose Fig. In Gloriosa superba the leaf apex is modified into a tendril. Vernation is a term used to describe how the youngest grass leaves are arranged in the shoot (inside of the leaf sheath between the collar region and the crown). Which of the following turfgrasses has rhizomes, stolons, and folded vernation? E.g., Michelia champaca. Parallel venation is divided into two types depending upon the number of principle veins: In this type of venation, the leaf has a prominent midrib and this gives off lateral veins which precede parallel to each other towards the margin or apex of the leaf-blade. 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. Draw the veins of leaves given in Fig. 9 10 11. Parallel venation: Veins run parallel to each other Example:Banana, grass, wheat In this type of venation, the veins and veinlets are repeatedly branched and irregularly distributed, forming a complex network, e.g., dicotyledonous leaves. e.g.Mango. 7.3 (a) Label the parts 1, 2, 3 and 4 in the diagram. Nerium. Marsilia) 5. annual bluegrass. E.g., rangoon creeper (Quisqualis). Grasses are monocotyledonous plants and have fibrous root systems and parallel venation E.g., tamarind. These are then connected by smaller veins which pass in all directions, forming a network. E.g., coriander (Coriandrum). The purpose of phyllotaxy is to avoid overcrowding of leaves so as to expose the leaves maximum to the sunlight for photosynthesis. Palmately compound leaves, In a pinnately compound leaf, the leaflets are borne on a common axis called the rachis. Asked by Wiki User. 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. 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. The grass leaf is an elongated structure arising at the node and consisting of a basal cylindrical sheath that encircles the stem or younger leaves. Vernation An arrangement of the youngest leaf in the bud shoot; rolled or folded. E.g., silk cotton tree (Bombax). Leaf sheaths are hollow cylinders split down one side with the margins usually overlapping. When five or more leaflets are joined to the tip of the petiole and are spreading like fingers from the palm. Each vein enters the broad leaf base independently, and remains parallel and separate from all the others up to the tip of the leaf. The leaves of Venus flytrap plant have long hair. Propagation is by division of the matted clumps. However, some monocotyledonous leaves like Smilax, Dioscorea and aroids also show reticulate venation. E.g., wood apple (Aegle). Mango. (BS) Developed by Therithal info, Chennai. 7.2 below and write the type of venation. The veins are chiefly made of vascular tissues, the xylem and phloem. In single‐veined conifers, lamina area is linked with environmental moisture as expected from a direct hydraulic limitation of size (Zwieniecki et al ., 2004a ; Brodribb & Feild, 2008 ). 4C,D). Leaves are collectively referred to as foliage, as in "autumn foliage". 7.27.2Fig. The leaf base is expanded to form a laminar structure to carry out photosynthesis. 7.3 and attempt the questions that follow it. A tree leaf has several types of veins. E.g., Grasses, wheat, bamboo. These are free from one another, that is, not connected by any lamina, and more or less distinctly joined (articulated) at their base. Bifoliate (eg.Zornia diphylla) 3. 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. When there are more than two leaves at each node which are arranged in a circle or a whorl. In the pitcher plant Nepenthes, a terrestrial insectivorous plant, the lamina gets modified into a pitcher-like structure. In this type there are a number of more or less equally prominent veins which arise from the tip of the petiole and reach outwards or upwards. These are thin membranous leaves found at the nodal region. The central one is called the midrib or midvein. What are the different types of ve-nation found in the leaves ? According to the number of leaflets present the compound leaf may be 1. unifoliate (eg. Moringa, 4.Decompound : When the compound leaf is more than thrice pinnate it is said to be decompound. The rice plant is grass, and thus it has a parallel venation arrangement common in monocot plants. Fig. Grass family. However, some monocotyledonous leaves like Smilax, Dioscorea and aroids also show reticulate venation. On the other hand, if leaves expand outward in all possible directions, the veins will diverge and show branching. grass has a parallel leaf venation. Though dicots are no longer recognized as a single distinct clade, … A leaf with four leaflets articulated to the tip of the petiole. Eg. Fruit of grass plant is a. Sessile leaves. Modifications. Multifoliate (eg. Common name (s): Japanese silver grass, maiden grass. Pronunciation: miss-KANTH-us sye-NEN-sis. Two lateral stipules grow adhering to the petiole upto a certain height, thus making it somewhat winged. In grass they converge at the apex and hence it is called convergent. This gives off lateral veins which reach the margin or apex of the leaf. It is of two types. There are the following two types of leaf venation: Reticulate venation: If the design of veins makes a net-like structure on both the sides of midrib then it is called Reticulate venation. Leaf venation can be defined as pinnate, palmate, or parallel. E.g., Lathyrus. Connecting between the main veins are the commissural veins, which are perpendicular to the main veins. In Utricularia which is an aquatic insectivorous plant, segments of the leaf modify into bladder like structures which trap small insects present in the water. Reticulate venation : Veins and veinlets are irregularly distributed in the lamina forming a network. Define venation. Reticulate venation – Reticulate venation includes irregular vein arrangement for the creation of a network. Which of the following is not a correct match? 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. The arrangement of veins and the veinlets in the lamina is known as venation. E.g., rose. Sub aerial modifications 3. Banana. The leaflets are known as the pinnae. Scientific name: Miscanthus sinensis. Soil is dry with a good amount of organic matter. E.g., banana, ginger, turmeric, Canna. 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. Types of Leaves 3. (b) Lamina: green … In this type two stipules lie between the petioles of opposite or whorled leaves. eg. For example, mango leaf, gram 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. Answer. Leaves. Plant type: herbaceous; ornamental grass. Simply E.g., gourd, castor, China rose. b. 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