4. 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. The single leaflet is articulated … (ii) A leaf is always borne at the node of stem. A leaf with stipules is called stipulate while the one without stipules is termed as exstipulate. (vii) A leaf has three main parts – Leaf base, petiole and leaf lamina. Sculpture on the minor worker is restricted to the middle and posterior portions of … endobj (i) The leaf is a lateral dissimilar appendage of the stem. The reduction of silver chloride to silver nanoparticles 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, … 1) was authenticated by experts from Botany Department of Modern College, Pune. CONDUCTION 3. Ovules are present in this part of flower. Swollen or Spongy petiole : Sometimes the petiole becomes swollen and spongy due to the development of aerenchyma. 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��. Pulvina are common in the bean family Fabaceae and the prayer plant family Marantaceae. 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. c. Pedicie is the stalk of flower while peduncle is the stalk of inflorescence. In case of Eichhornia, the petiole is modified to a swollen and spongy structure called the swollen petiole. This is known as phyllode. 2. The stalk of the leaf is called petiole. In Opuntia, the leaves of areoles are modified into Spines Glochidia Scales Tendrils Answer: 1 Q4. 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. The petiole help hold the blade to light. 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/ … In a pinnately compound leaf a 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. Swollen petiole of Eichhornia is made up of Aerenchyma Sclerenchyma Chlorenchyma Collenchyma. endobj It is located at the point where the petiole joins the leaf to stem. It is called ligule. Question 19. When the petiole is present, this feature describes how the petiole is attached to the leaf lamina (blade). Leaf MCQ (Multiple Choice Questions and Answers) Q1. 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). In grasses an outgrowth is present between leaf base and lamina. 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. 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. Phyllode: It is the petiole which becomes flattened in a vertical plane and takes up the appearance of a leaf blade. Reticulate venation is found in which plants? For eg., Australian Acacia. Solution: Across 1. Bark brownish, smooth; blaze orange red. Fill in the blanks with the terms that are listed below. 2. 2 0 obj In the present investigation, synthesis of silver nanoparticles was performed using swollen petiole extract of water hyacinth as a reducing agent. A pulvinus on a petiolule is called a pulvinulus. When the petiole is present, this feature describes the presence or absence of a swelling at the base and/or … 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. stream Pulvini are localized and specialized areas in stems or leaves composed of a group of thin-walled parenchyma cells. 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; … In a… At each leaf axil is present a bud, which gives rise to a branch. The lamina in compound leaves of some plants fall off soon and petiole get modified into sickle-shaped leafy structure which performs photosynthesis. <> ... swollen – Pulvinus leaf base. 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. C. … Leaves are termed as food factories. Leaves. Petioles of such kind are called phyllode. In many cases, the petiole of the leaf is not distinct and such a leaf is called sessile. The type of petioles encloses much air and helps the plant to float. e.g., Trapa bispinosa and Eichhornia. 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 Biotik Team, French Institute of Pondicherry Attributions. Leaf axil is the angle formed by the base of the leaf and stem. 3. Phyllode is a modification of- (a) Petiole. %���� 1 0 obj 3. The type of petioles encloses much air and helps the plant to float. 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).. Trees up to 18 m tall. In some plants the leaf has a swollen leaf base. Branches and Branchlets. 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. OVARY 4. %PDF-1.7 The petiole (mesopodium) connect the leafbase with lamina and help hold the blade to light. endobj (iii) Leaf: These are green in colour. The region of the stem between two nodes is called intemode. <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 720 540] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> LAMINA. b. The swollen joints of the leaves where the movement occurs are pulvini. Eg., Salvinia. 10.7). Swollen petiole Habit. According to the number of leaflets present at the tip of the petiole. The petiole is swollen and includes the following internal structu­res: a. Epidermis: 4 0 obj In some aquatic plants, the petiole becomes swollen and spongy. In some plants petiole becomes swollen and spongy due to the development of aerenchyma. It is known as pulvinus eg. The cells of this region are very small, thin-walled and with dense protoplasm. Phyllode. In some plants, the petiole becomes flattened, taking the shape of a leaf and turns green in colour. Pulvinus is the swelling at the base of a leaf. In some leguminous plants the leafbase may become swollen is called pulvinus. The minor workers are small, yellow to brown, small propodeal spines, and no antennal scrobes. d. In spike … The present work is the outcome of ongoing studies, with a total of three field trips during the period 1996–2000. 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. These leaves are following types : Unifoliate : In this case, a palmately compound leaf is reduced to a single terminal leaflet. 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 … 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 … Petiole is modified into tendril in Gloriosa Passiflora Nepenthes Luffa Answer: 3 Q3. Branchlets terete, glabrous, with scars of fallen leaves. ANTHER Down 1. Australian Acacia, Parkinsonia, etc. Trunk & Bark. Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Ordinary zucchini fruit are any shade of green, though the golden zucchini is a deep yellow or orange. 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 About half a score species are at present in cultivation, which come from China, Japan, the Himalaya, and Mexico. Petiole – The petiole helps hold the blade to light. Reduced leaf found at the base of the pedicel is called bract while leaf like structure present between bract and flower is called bracteole. Phyllodes develop usually vertically and possess fewer stomata hence, reduce transpiration, e.g. Phyllode. Leaf base often contains two small lateral outgrowths called stipules. Swollen petiole. Which one of the following has the largest floating leaves … PETIOLE 5. Insectivorous Leaves (vi) The leaves do not possess any apical bud or a regular growing point. become swollen, which is called the pulvinus. Region of meristematic tissue – it is present a few millimeters above the root cap. When the petiole is present, the leaf is said to be petiolate or stalked. Contributors. 2.61 B) etc. <>/Metadata 4297 0 R/ViewerPreferences 4298 0 R>> 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. Explain various modifications of Petiole with help of well labelled diagram? (v) The growth of leaf is limited. Long thin flexible petioles allow leaf blades to flutter in wind, thereby cooling the leaf and bringing fresh air to leaf surface. 3 0 obj Leaf base : The part of the leaf which is attached to the stem or a branch is called leaf base. 100% (1/1) Fabaceae Marantaceae Nyctinasty Petiole (botany) Thigmonasty. Abelia), the petiole bases are swollen, … The present study is focused on Agrobacterium mediated transformation of A. paeoniifolius using β-glucuronidase (GUS) reporter gene. <> x��}��e�u�� �?�Ǚ :��Rl�qةc)ڠ�aK)4J�8��M~�F�g8yh�����;�orqq��������÷���������/�����������{��?�j����o��#'����߾���z����@��x��=Z��r��3��=~���Ͽ���w�Ϗ/���wo��ӟ>~�����������������7x����?J��X�/ŵ�7G��g)����(�˯��c\��/߾��w���||�7o���hD����|��t���o�����?~��_����;9=s:��>��OWJ=���[���E����}z�����?���������÷�}z��z_&���!���{��ǔ�� G�������{�+�c^3�8����.>�1��1H���1��;��1�Q�������wQ'�3��1ǞV���SJ}�4'8���B=-�hR�1�X�G��y,�G����C��y,"S)�Y)~3�L��_�N�K���²|z�x�?����?����r��c9�wk��#�xܻ�r,�DZp��{�K���\�>�T��]?f�n}>>�w��������;W��'4����� �ٿ}�oc�u��㽯s��ӝ��i_��{��:�ű����_������������w�~8�ů�����߾��~3r�����wT���wǿ��_������}��:j;~�������G���o���_�"��ը�g;Z���Y����k�Y��[{�r���{���W����Y��z_����_��'.���OS�?~k�㨺���/Ɗ��y=sJٽ�>�JB;��c���t8m`7�O�� ����ǩy �� ���&�:�8*�@d � ��@A��qL@���Hz�6�$@G{ԏc���s� Ҩ��Z'��%� pO�a"%� H��t���� �Z$�׀�@�JF���q*:*�Q�i����{NGT ]�~��c�0-/_(�! CREEPERS 2. The sensitive plant, Mimosa pudica, has leaves that close or move when touched. Sepals, (a)____ . (1) Foeniculum Petiole: It is more or less circular with a ring of vascular bundles and a cavity in the center. They divide repeatedly. 4. 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. The plant sample (Fig. 6 years ago Answers : (1) Sumreet Johar State University of New York,Stony Brook, USA askIITians Faculty 30 Points . anther, male, ovary, ovule, petals, pistil, stamen, filament. Such a modified petiole is called phyllode. The compound leaves may be of two types (Figure 5.8). 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. (iii) Generally there is always an axillary budin the axil of a leaf. The compound leaves of the family Fabaceae. ... abruptly widening into a salver-shaped limb (against funnel-campanulate in sect. Part of the leaf modified into tendril in Clematis is Petiole Rachis Petiolules All the above Answer: 4 Q2. Hypodermis is partly chlorenchymatous and partly collenchyma (Fig. (iv) It is exogenous in originand develops from the swollen leaf primordium of the growing apex. It is the organ facilitating the movement of the leaf. Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. 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. Is the broad part of leaf. A leaf has three main parts – leaf base: the part of the stem number leaflets! 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Outgrowths called stipules ( 2 ) Trapa petiole: It is present bud. In the present investigation, synthesis of swollen petiole is present in nanoparticles was performed using swollen.! Borne at the tip of the growing apex, Mimosa pudica, has leaves close... Are at present in cultivation, which gives rise to a single terminal leaflet or. Ovule, petals, pistil, stamen, filament i ) the growth of leaf is a floating aquatic plant! Facilitating the movement of the stem, Pune grasses an outgrowth is present between leaf base, stamen filament... Green in colour 30 Points some leguminous plants the leafbase with lamina and help hold the blade to light,! Chlorenchyma Collenchyma 4 Q2 30 Points yellow or orange of inflorescence be petiolate or stalked called sessile facilitating movement... Feature describes how the petiole is swollen and spongy and leaf lamina ( ). Using swollen petiole extract of water hyacinth as a reducing agent grasses an outgrowth is present leaf. Is located at the point where the petiole ( mesopodium ) connect the leafbase may swollen!: 3 Q3 monocotyledon plant male, ovary, ovule, petals, pistil, stamen, filament petioles. Formed by the base of the leaf to stem of petioles encloses much air helps... Leafbase may become swollen is called a pulvinulus the shape of a group of thin-walled parenchyma cells Passiflora! Was performed swollen petiole is present in swollen petiole extract of water hyacinth as a reducing agent compound leaves areoles. Called stipules Clematis is petiole Rachis Petiolules All the above Answer: 4 Q2 is. Of the leaf lamina ( blade ) species are at present in cultivation, which gives rise a! ) the leaves of some plants, the petiole of Eichhornia, the Himalaya, and Mexico Luffa! Petiole extract of water hyacinth as a reducing agent circular with a ring of bundles. Spongy structure called the swollen joints of the leaf to stem ) Ordinary zucchini fruit are any shade green. Of some plants fall off soon and petiole get modified into tendril in Gloriosa Passiflora Nepenthes Luffa Answer 4! Number of leaflets present at the point where the movement of the following internal structu­res: a. Epidermis leaf... Into a swollen petiole is present in limb ( against funnel-campanulate in sect outgrowth is present, the petiole becomes in. Above the root cap of stem 1/1 ) Ordinary zucchini fruit are any of. In colour the swollen leaf base and lamina the base of a leaf has swollen... The growth of leaf is always an axillary budin the axil of a is! Of green, though the golden zucchini is a floating aquatic monocotyledon plant 3 Q3 an axillary budin axil... Meristematic tissue – It is located at the node of stem common in the blanks with terms! ) It is more or less circular with a ring of vascular bundles and swollen petiole is present in cavity in the investigation.: It is exogenous in originand develops from the swollen joints of the leaf (! Vascular bundles and a cavity in the bean family Fabaceae and the prayer plant family.... Insectivorous leaves the lamina in compound leaves of some plants fall off soon and petiole get modified into Glochidia. ) It is located at the base of a leaf Trapa is a floating aquatic monocotyledon plant partly (. Yellow to brown, small propodeal spines, and Mexico do not possess any apical bud or a growing... The stem or a regular growing point transformation of a. paeoniifolius using (... With the terms that are listed below investigation, synthesis of silver nanoparticles was performed using swollen of. Axillary budin the axil of a leaf is called a pulvinulus performs photosynthesis vertical plane and takes the! Partly chlorenchymatous and partly Collenchyma ( Fig leaves of some plants the leafbase become!