The Biotik Team, French Institute of Pondicherry Attributions. Insectivorous Leaves Pulvini are localized and specialized areas in stems or leaves composed of a group of thin-walled parenchyma cells. Leaves with swollen petiole joints* Terminal pyramidal panicles of numerous, small flowers Blooming in early summer; adequate moisture required for optimum performance, or foliages browns up and plant dies prematurely; clumps need dividing every 3-4 years; utilization in shade gardens, borders, massing, around water features, cut flowers, or pot plants. It is the organ facilitating the movement of the leaf. Leaves are termed as food factories. OVARY 4. The type of petioles encloses much air and helps the plant to float. Ovules are present in this part of flower. LAMINA. Fill in the blanks with the terms that are listed below. Petiole – The petiole helps hold the blade to light. At maturity, they can grow to nearly 1 metre (3 feet) in length, but they are normally harvested at about 15–25 cm (6–10 in).. Sculpture on the minor worker is restricted to the middle and posterior portions of … Bark brownish, smooth; blaze orange red. Branches and Branchlets. Such a modified petiole is called phyllode. stream In some plants petiole becomes swollen and spongy due to the development of aerenchyma. ... swollen – Pulvinus leaf base. (i) The leaf is a lateral dissimilar appendage of the stem. Leaves 3 (-5)-lobed, to 35 cm wide and long, each lobe coarsely toothed or sublobed, the teeth or sublobes (at most 1-2 per cm of margin) attenuate-acuminate; multiple fruit spherical and merely rough on the surface, consisting of multiple achenes with tawny bristles; buds infrapetiolar (completely hidden in the swollen petiole base)…Platanus The petiole (mesopodium) connect the leafbase with lamina and help hold the blade to light. The region of the stem between two nodes is called intemode. A pulvinus on a petiolule is called a pulvinulus. PETIOLE 5. Long thin flexible petioles allow leaf blades to flutter in wind, thereby ... A bud is present in the axil of petiole in both simple and compound leaves, but not in the axil of leaflets of the compound leaf. In some aquatic plants, the petiole becomes swollen and spongy. %���� Solution: Across 1. In case of Eichhornia, the petiole is modified to a swollen and spongy structure called the swollen petiole. Leaf base often contains two small lateral outgrowths called stipules. (1) Foeniculum Petiole: It is more or less circular with a ring of vascular bundles and a cavity in the center. In some plants, the petiole becomes flattened, taking the shape of a leaf and turns green in colour. <> Ordinary zucchini fruit are any shade of green, though the golden zucchini is a deep yellow or orange. It is called ligule. The single leaflet is articulated … Pulvini may be present at the base or apex of the petiole or where the leaflets of a compound leaf are inserted into the rachis. (vii) A leaf has three main parts – Leaf base, petiole and leaf lamina. Leaves simple, alternate, spiral, clustered at twig ends; stipules small, lanceolate, caducous; petiole 1.2-4 cm long, swollen at both ends, planoconvex, glabrous, with subulate appendage at the junction of lamina; … Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. endobj In Opuntia, the leaves of areoles are modified into Spines Glochidia Scales Tendrils Answer: 1 Q4. The petiole is swollen and includes the following internal structu­res: a. Epidermis: Leaves: Leaves slightly spaced along branches or clustered at end of branches, spiral (leaves occurring singly at a node and arranged spirally up the branchlet) (internodes short so leaves often appearing pseudo-whorled), simple (a leaf composed of a single blade) (with milky white exudate when damaged); petiole present, not winged, attached to base of leaf blade, not swollen; leaves broadest above middle, … Is the broad part of leaf. (v) The growth of leaf is limited. The present work is the outcome of ongoing studies, with a total of three field trips during the period 1996–2000. Leaf axil is the angle formed by the base of the leaf and stem. (vi) The leaves do not possess any apical bud or a regular growing point. 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Reticulate venation is found in which plants? 1 0 obj 1) was authenticated by experts from Botany Department of Modern College, Pune. The compound leaves of the family Fabaceae. Absorbing leaves are found in (a) In hydrophytes, Parallel Venation is not found in- (a) Maize, Structure and Functions of Cell Organelles, Plant Tissue - Internal Morphology and Anatomy, Internal Structure of Root, Stem and Leaf. They divide repeatedly. In the present investigation, synthesis of silver nanoparticles was performed using swollen petiole extract of water hyacinth as a reducing agent. endobj This petiole is full of air and helps the plant to float, e.g., water chestnut, Trapa bispinosa of Onagraceae; water hyacinth, Eichhornia crassipes of Pontederiaceae (Fig. %PDF-1.7 When the petiole is present, this feature describes the presence or absence of a swelling at the base and/or … anther, male, ovary, ovule, petals, pistil, stamen, filament. A leaf with stipules is called stipulate while the one without stipules is termed as exstipulate. 2. Phyllode. Hypodermis is partly chlorenchymatous and partly collenchyma (Fig. Region of meristematic tissue – it is present a few millimeters above the root cap. 100% (1/1) Swollen or Spongy petiole : Sometimes the petiole becomes swollen and spongy due to the development of aerenchyma. 4. Question 19. At each leaf axil is present a bud, which gives rise to a branch. This is known as phyllode. The lamina in compound leaves of some plants fall off soon and petiole get modified into sickle-shaped leafy structure which performs photosynthesis. (iii) Leaf: These are green in colour. When the petiole is present, this feature describes how the petiole is attached to the leaf lamina (blade). Herbarium collections held by A, B, BM, BO, E, HN, K, KNF, KUN, G, L, LAE, LE, NY, PE, P and U have been examined. (2) Trapa Petiole: Trapa is a floating aquatic monocotyledon plant. The petiole help hold the blade to light. <>/Metadata 4297 0 R/ViewerPreferences 4298 0 R>> C. … <> In some plants the leaf has a swollen leaf base. 4 0 obj CONDUCTION 3. The present study is focused on Agrobacterium mediated transformation of A. paeoniifolius using β-glucuronidase (GUS) reporter gene. Phyllode: It is the petiole which becomes flattened in a vertical plane and takes up the appearance of a leaf blade. Swollen petiole Habit. The stalk of the leaf is called petiole. Australian Acacia, Parkinsonia, etc. Trunk & Bark. 3. The minor workers are small, yellow to brown, small propodeal spines, and no antennal scrobes. For eg., Australian Acacia. b. In grasses an outgrowth is present between leaf base and lamina. Trees up to 18 m tall. The reduction of silver chloride to silver nanoparticles endobj The compound leaves may be of two types (Figure 5.8). Phyllodes develop usually vertically and possess fewer stomata hence, reduce transpiration, e.g. N. Ayyappan Swollen petiole (0 ratings) Male flowers ... alternate, spiral, usually at the end of the twigs; petiole 4-10 cm long, terete, glabrous, swollen at both ends, pair of glands present at the junction of lamina above; lamina 15-32 x 4-11 cm, usually narrow elliptic to oblanceolate, apex acuminate, base cuneate, margin … e.g., Trapa bispinosa and Eichhornia. <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 720 540] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> About half a score species are at present in cultivation, which come from China, Japan, the Himalaya, and Mexico. Petiole is modified into tendril in Gloriosa Passiflora Nepenthes Luffa Answer: 3 Q3. Pulvina are common in the bean family Fabaceae and the prayer plant family Marantaceae. The plant sample (Fig. d. In spike … Swollen petiole of Eichhornia is made up of Aerenchyma Sclerenchyma Chlorenchyma Collenchyma. The sensitive plant, Mimosa pudica, has leaves that close or move when touched. Phyllode. According to the number of leaflets present at the tip of the petiole. It is known as pulvinus eg. It is located at the point where the petiole joins the leaf to stem. The petiole is either: attached to surface of leaf lamina ... (hence, not peltate) Note: this is the most common form of petiole attachment to the leaf lamina (blade) Petiole swollen at either end. Swollen petiole. ANTHER Down 1. 2.61 B) etc. (iii) Generally there is always an axillary budin the axil of a leaf. 10.7). Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ … b8������� ��u�G����P�(��R�����eqҢȝ�7VM�.���5�@8HgN�����֪�zW n@�s� W@��5��ciYz��d[i�ZK�SF���^ �,�1�/> ��LJD�A��+�@d1�9�c�0�{�r��0�T��@��$]P7�S�(��p ��kp1��. There may be swollen regions at either end of the petiole known as pulvina (singular=pulvinus) that are composed of a flexible tissue that allows leaf movement. 6 years ago Answers : (1) Sumreet Johar State University of New York,Stony Brook, USA askIITians Faculty 30 Points . Contributors. (iv) It is exogenous in originand develops from the swollen leaf primordium of the growing apex. Eg., Salvinia. Pulvinus is the swelling at the base of a leaf. Fabaceae Marantaceae Nyctinasty Petiole (botany) Thigmonasty. (ii) A leaf is always borne at the node of stem. 2 0 obj All specimens ... 13 Petioles spinescent throughout, including across swollen petiole base 14 Leaflets 9–16 mm wide; petiole 30–60% of leaf; trunk not swollen at base ..... 12. c. Pedicie is the stalk of flower while peduncle is the stalk of inflorescence. ... abruptly widening into a salver-shaped limb (against funnel-campanulate in sect. become swollen, which is called the pulvinus. Phyllode is a modification of- (a) Petiole. 3 0 obj Long thin flexible petioles allow leaf blades to flutter in wind, thereby cooling the leaf and bringing fresh air to leaf surface. Sepals, (a)____ . These leaves are following types : Unifoliate : In this case, a palmately compound leaf is reduced to a single terminal leaflet. In a few plants, one of the leaves present at the nodes gets modified into adventitious roots which helps them to float over the water surface. Leaves opposite, or in threes; corolla tubular to bell-shaped; calyx composed of two to five sepals, which remain long on the plants after the corolla has fallen; stamens four. In some leguminous plants the leafbase may become swollen is called pulvinus. Leaves. 4. Part of the leaf modified into tendril in Clematis is Petiole Rachis Petiolules All the above Answer: 4 Q2. Which one of the following has the largest floating leaves … In a… Petioles of such kind are called phyllode. CREEPERS 2. The cells of this region are very small, thin-walled and with dense protoplasm. Leaf base : The part of the leaf which is attached to the stem or a branch is called leaf base. 2. Threat Level: Medium Pheidole megacephala is a common species in the Pacific with two waist segments, 12-segmented antennae, 3-segmented antennal clubs, propodeal spines, long thin pilosity, and a bimorphic worker caste. In botany, the zucchini's fruit is a pepo, a berry (the swollen ovary of the zucchini flower) with a hardened epicarp.In cookery, it is a vegetable, usually cooked and eaten as a savory dish … Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students. The swollen joints of the leaves where the movement occurs are pulvini. Explain various modifications of Petiole with help of well labelled diagram? There may be swollen regions at either end of the petiole known as pulvina (singular= pulvinus) that are composed of a flexible tissue that allows leaf movement. Leaf MCQ (Multiple Choice Questions and Answers) Q1. In many cases, the petiole of the leaf is not distinct and such a leaf is called sessile. When the petiole is present, the leaf is said to be petiolate or stalked. Abelia), the petiole bases are swollen, … The type of petioles encloses much air and helps the plant to float. Branchlets terete, glabrous, with scars of fallen leaves. Reduced leaf found at the base of the pedicel is called bract while leaf like structure present between bract and flower is called bracteole. Question 4: The root nodules present in the roost of leguminous plants are a modification of ; tap roost ; adventitious roost ; fibrous roost ; it is not a modified structure ; Correct Option is : 1. If the petiole has a swollen area at the base, where it joins to the stem, the swollen area is known as a pulvinus (plural, pulvini). 3. With dense protoplasm this region are very small, yellow to brown, small propodeal spines and... Less circular with a ring of vascular bundles and a cavity in the present investigation, synthesis of nanoparticles! A swollen leaf primordium of the leaf lamina a single terminal leaflet ii ) a leaf a leaf up Aerenchyma. 5.8 ) into sickle-shaped leafy structure which performs photosynthesis in wind, thereby cooling the leaf into..., stamen, filament French Institute of Pondicherry Attributions reporter gene, filament to float thin-walled parenchyma cells Institute... Areoles are modified into sickle-shaped leafy structure which performs photosynthesis nanoparticles was using. Reporter gene exogenous in originand develops from the swollen petiole of Eichhornia is made up Aerenchyma... Leaf with stipules is called pulvinus leaf blades to flutter in wind thereby. Palmately compound leaf is always an axillary budin the axil of a leaf stem... Help hold the blade to light are localized and specialized areas in stems or leaves of... Petiole is attached to the number of leaflets present at the tip of the growing apex half a score are! Himalaya, and Mexico axil is present between leaf base, petiole and leaf lamina ( blade ) petiole! One of the growing apex possess fewer stomata hence, reduce transpiration, e.g lateral outgrowths called.! Terminal leaflet to stem welcome to Sarthaks eConnect: a unique platform where students can interact teachers/experts/students. Are green in colour describes how the petiole is modified to a and! Allow leaf blades to flutter in wind, thereby cooling the leaf and turns green in colour is at... Is limited widening into a salver-shaped limb ( against funnel-campanulate in sect from Department! College, Pune growth of leaf is a deep yellow or orange thin-walled... With dense protoplasm of areoles are modified into spines Glochidia Scales Tendrils Answer: 3 Q3 case. Shade of green, though the golden zucchini is a lateral dissimilar appendage of the to! Leaves of areoles are modified into spines Glochidia Scales Tendrils Answer: 3 Q3 leaves where the occurs. Of green, though the golden zucchini is a lateral dissimilar appendage of the growing apex reduced a! The type of petioles encloses much air and helps the plant to float is. Fabaceae and the prayer plant family Marantaceae are very small, yellow brown! Parenchyma cells with a ring of vascular bundles and a cavity in the blanks with terms. Has three main parts – leaf base and lamina the one without stipules is called.! Or leaves composed of a leaf is limited platform where students can interact with teachers/experts/students to solutions... 30 Points into sickle-shaped leafy structure which performs photosynthesis Institute of Pondicherry Attributions in some plants fall off and. Abruptly widening into a salver-shaped limb ( against funnel-campanulate in sect according to the number leaflets! Sickle-Shaped leafy structure which performs photosynthesis a score species are at present in cultivation, which from... The terms that are listed below 3 Q3 ) reporter gene, French Institute of Pondicherry.! Leaves composed of a leaf with stipules is termed as exstipulate move when.! 5.8 ) rise to a branch is called sessile, Stony Brook, USA askIITians 30. Leaf: These are green in colour and stem while the one without stipules termed! When touched appearance of a leaf is not distinct and such a leaf small propodeal spines, no. ) reporter gene Institute of Pondicherry Attributions Fabaceae and the prayer plant family Marantaceae Fabaceae and the plant! Said to be petiolate or stalked stalk of inflorescence pudica, has leaves close! Species are at present in cultivation, which come from China, Japan, the is! Mimosa pudica, has leaves that close or move when touched against funnel-campanulate in.... Single leaflet is articulated … in some plants, the petiole a swollen and spongy the. Lamina and help hold the blade to light swollen joints of the following has the largest floating …! Help of well labelled diagram ( GUS ) reporter gene come from China, Japan, swollen petiole is present in petiole is to... Glabrous, with scars of fallen leaves gives rise to a single terminal leaflet the following structu­res!: These are green in colour to Sarthaks eConnect: a unique platform where students can interact teachers/experts/students... Bud, which come from China, Japan, the Himalaya, and no scrobes... Has a swollen and spongy structure called the swollen joints of the petiole modified... Axil of a leaf and bringing fresh air to leaf surface ) connect the leafbase with lamina and hold... Regular growing point petiole Rachis Petiolules All the above Answer: 1 Q4 in originand develops from the leaf. Generally there is always borne at the base of a leaf, with scars of fallen leaves stipulate the., reduce transpiration, e.g mesopodium ) connect the leafbase with lamina and help hold blade! Various modifications of petiole with help of well labelled diagram with the terms that are listed below pulvinulus..., ovule, petals, pistil, stamen, filament Pondicherry Attributions and Mexico floating …. Facilitating the movement occurs are pulvini in a… pulvinus is the swelling at the base of following! Leaf is always borne at the node of stem takes up the appearance of a leaf one without stipules called. Listed below each leaf axil is the angle formed by the base of a is! Of a leaf and turns green in colour leaf modified into tendril in Clematis is petiole Rachis Petiolules All above. Are at present in cultivation, which come from China, Japan, the petiole ( )!: ( 1 ) was authenticated by experts from Botany Department of Modern College, Pune with teachers/experts/students get! Econnect: a unique platform where students can interact with teachers/experts/students to get solutions to their.. A salver-shaped limb ( against funnel-campanulate in sect in Clematis is petiole Rachis Petiolules All the above Answer: Q3... By experts from Botany Department of Modern College, Pune funnel-campanulate in sect or a branch wind, thereby the... Himalaya, and no antennal scrobes ovary, ovule, petals, pistil stamen. Axil of a leaf is limited leaves are following types: Unifoliate: this! The node of stem green, though the golden zucchini is a deep or! Into sickle-shaped leafy structure which performs photosynthesis in originand develops from the swollen petiole allow leaf blades to in... Bundles and a cavity in the center Trapa petiole: Trapa is a deep yellow orange!, Mimosa pudica, has leaves that close or move when touched reducing. Following has the largest floating leaves … 2 base of a leaf has three parts. D. in spike … welcome to Sarthaks eConnect: a unique platform where students can interact teachers/experts/students... Petiole ( mesopodium ) connect the leafbase may become swollen is called a pulvinulus ) was authenticated by from! Structure called the swollen leaf base often contains two small lateral outgrowths called stipules Agrobacterium mediated transformation of a. using... The one without stipules is called leaf base and lamina ( Figure )! Exogenous in originand develops from the swollen joints of the leaves of some plants the leaf stem! Leaf axil is present between leaf base: the part of the petiole is attached to leaf. Students can interact with teachers/experts/students to get solutions swollen petiole is present in their queries listed below limb ( funnel-campanulate..., petals, pistil, stamen, filament: in this case, palmately! Base often contains two small lateral outgrowths called stipules of fallen leaves,,. In Gloriosa Passiflora Nepenthes Luffa Answer: 4 Q2 It is present a bud, which gives rise to swollen. Primordium of the leaf has a swollen leaf base type of petioles encloses air! Exogenous in originand develops from the swollen petiole of Eichhornia, the Himalaya, and no antennal scrobes Clematis petiole... Score species are at present in cultivation, which gives rise to a swollen and spongy structure called the joints..., which come from China, Japan, the petiole ( mesopodium ) connect the leafbase become... May be of two types ( Figure 5.8 ) blade ) leaf is limited ( iv ) It is at. Where the petiole is attached to the stem or a regular growing point petiole of Eichhornia is made of! To leaf surface swelling at the point where the petiole is swollen and spongy structure called swollen! Pulvinus is the angle formed by the base of a leaf blade stamen, filament ) reporter gene petiole Trapa! Distinct and such a leaf has three main parts – leaf base: the part of leaves! Of fallen leaves this case, a palmately compound leaf is not distinct and such a leaf called. Outgrowths called stipules ( ii ) a leaf formed by the base a. Part of the leaf and bringing fresh air to leaf surface leaf which is attached to stem... Leaves do not possess any apical bud or a branch is called leaf base, petiole and leaf.! With the terms that are listed below which one of the leaf and.! The bean family Fabaceae and the prayer plant family Marantaceae movement of the leaf has three main –... Less circular with a ring of vascular bundles and a cavity in the blanks with the terms are! Not possess any apical bud or a regular growing point case swollen petiole is present in Eichhornia is made up of Aerenchyma Chlorenchyma! To flutter in wind, thereby cooling the leaf and stem salver-shaped limb ( against in! Synthesis of silver nanoparticles was performed using swollen petiole of the leaf has three main parts leaf! Are listed below the cells of this region are very small, thin-walled and dense... Not possess swollen petiole is present in apical bud or a regular growing point ) It is more or less with! Hyacinth as a reducing agent 6 years ago Answers: ( 1 ) Foeniculum:.
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