In Opuntia, the leaves of areoles are modified into Spines Glochidia Scales Tendrils Answer: 1 Q4. become swollen, which is called the pulvinus. 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. In a… 10.7). (v) The growth of leaf is limited. 4. For eg., Australian Acacia. 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. Petiole is modified into tendril in Gloriosa Passiflora Nepenthes Luffa Answer: 3 Q3. Pulvini are localized and specialized areas in stems or leaves composed of a group of thin-walled parenchyma cells. Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Contributors. Part of the leaf modified into tendril in Clematis is Petiole Rachis Petiolules All the above Answer: 4 Q2. anther, male, ovary, ovule, petals, pistil, stamen, filament. These leaves are following types : Unifoliate : In this case, a palmately compound leaf is reduced to a single terminal leaflet. stream 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��[email protected]���Hz�6�[email protected]{ԏc���s� Ҩ��Z'��%� pO�a"%� H��t���� �Z$�׀�@�JF���q*:*�Q�i����{NGT ]�~��c�0-/_(�! 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 stalk of the leaf is called petiole. Eg., Salvinia. ... swollen – Pulvinus leaf base. The Biotik Team, French Institute of Pondicherry Attributions. 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).. Ordinary zucchini fruit are any shade of green, though the golden zucchini is a deep yellow or orange. Solution: Across 1. In some aquatic plants, the petiole becomes swollen and spongy. CREEPERS 2. The compound leaves of the family Fabaceae. It is the organ facilitating the movement of the leaf. Hypodermis is partly chlorenchymatous and partly collenchyma (Fig. e.g., Trapa bispinosa and Eichhornia. In grasses an outgrowth is present between leaf base and lamina. Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. The petiole help hold the blade to light. 3. Trees up to 18 m tall. C. … The type of petioles encloses much air and helps the plant to float. In a pinnately compound leaf a LAMINA. The sensitive plant, Mimosa pudica, has leaves that close or move when touched. 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. 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; … The petiole (mesopodium) connect the leafbase with lamina and help hold the blade to light. 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. 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. Pulvinus is the swelling at the base of a leaf. Reticulate venation is found in which plants? Leaf MCQ (Multiple Choice Questions and Answers) Q1. OVARY 4. In some leguminous plants the leafbase may become swollen is called pulvinus. Which one of the following has the largest floating leaves … (iii) Generally there is always an axillary budin the axil of a leaf. <> ... abruptly widening into a salver-shaped limb (against funnel-campanulate in sect. Sculpture on the minor worker is restricted to the middle and posterior portions of … 2.61 B) etc. PETIOLE 5. %PDF-1.7 Question 19. Phyllode: It is the petiole which becomes flattened in a vertical plane and takes up the appearance of a leaf blade. Leaves are termed as food factories. In the present investigation, synthesis of silver nanoparticles was performed using swollen petiole extract of water hyacinth as a reducing agent. In some plants the leaf has a swollen leaf base. Long thin flexible petioles allow leaf blades to flutter in wind, thereby cooling the leaf and bringing fresh air to leaf surface. (iv) It is exogenous in originand develops from the swollen leaf primordium of the growing apex. 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. In case of Eichhornia, the petiole is modified to a swollen and spongy structure called the swollen petiole. Phyllodes develop usually vertically and possess fewer stomata hence, reduce transpiration, e.g. Phyllode. Bark brownish, smooth; blaze orange red. (iii) Leaf: These are green in colour. In some plants petiole becomes swollen and spongy due to the development of aerenchyma. The present work is the outcome of ongoing studies, with a total of three field trips during the period 1996–2000. 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. (1) Foeniculum Petiole: It is more or less circular with a ring of vascular bundles and a cavity in the center. The petiole is swollen and includes the following internal structu­res: a. Epidermis: Branches and Branchlets. When the petiole is present, this feature describes how the petiole is attached to the leaf lamina (blade). Fabaceae Marantaceae Nyctinasty Petiole (botany) Thigmonasty. The lamina in compound leaves of some plants fall off soon and petiole get modified into sickle-shaped leafy structure which performs photosynthesis. In many cases, the petiole of the leaf is not distinct and such a leaf is called sessile. About half a score species are at present in cultivation, which come from China, Japan, the Himalaya, and Mexico. It is called ligule. d. In spike … It is known as pulvinus eg. 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. 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. (2) Trapa Petiole: Trapa is a floating aquatic monocotyledon plant. Australian Acacia, Parkinsonia, etc. In some plants, the petiole becomes flattened, taking the shape of a leaf and turns green in colour. c. Pedicie is the stalk of flower while peduncle is the stalk of inflorescence. 6 years ago Answers : (1) Sumreet Johar State University of New York,Stony Brook, USA askIITians Faculty 30 Points . The compound leaves may be of two types (Figure 5.8). 2. 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, … %���� <>/Metadata 4297 0 R/ViewerPreferences 4298 0 R>> 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 … endobj b. Swollen petiole. <> Leaf base often contains two small lateral outgrowths called stipules. The single leaflet is articulated … At each leaf axil is present a bud, which gives rise to a branch. ANTHER Down 1. Insectivorous Leaves Pulvina are common in the bean family Fabaceae and the prayer plant family Marantaceae. <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 720 540] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> 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. Petioles of such kind are called phyllode. Phyllode. b8������� ��u�G����P�(��R�����eqҢȝ�7VM�.���5�@8HgN�����֪�zW [email protected]�s� [email protected]��5��ciYz��d[i�ZK�SF���^ �,�1�/> ��LJD�A��+�@d1�9�c�0�{�r��0�T��@��$]P7�S�(��p ��kp1��. CONDUCTION 3. (vi) The leaves do not possess any apical bud or a regular growing point. 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 … 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. 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. 2 0 obj 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/ … The region of the stem between two nodes is called intemode. Swollen petiole Habit. The swollen joints of the leaves where the movement occurs are pulvini. Trunk & Bark. 4 0 obj When the petiole is present, the leaf is said to be petiolate or stalked. 3. The present study is focused on Agrobacterium mediated transformation of A. paeoniifolius using β-glucuronidase (GUS) reporter gene. This is known as phyllode. Phyllode is a modification of- (a) Petiole. 1 0 obj endobj Leaf base : The part of the leaf which is attached to the stem or a branch is called leaf base. Region of meristematic tissue – it is present a few millimeters above the root cap. 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. It is located at the point where the petiole joins the leaf to stem. 100% (1/1) Swollen or Spongy petiole : Sometimes the petiole becomes swollen and spongy due to the development of aerenchyma. The cells of this region are very small, thin-walled and with dense protoplasm. Such a modified petiole is called phyllode. (ii) A leaf is always borne at the node of stem. The type of petioles encloses much air and helps the plant to float. 2. A pulvinus on a petiolule is called a pulvinulus. 4. According to the number of leaflets present at the tip of the petiole. (i) The leaf is a lateral dissimilar appendage of the stem. A leaf with stipules is called stipulate while the one without stipules is termed as exstipulate. Explain various modifications of Petiole with help of well labelled diagram? When the petiole is present, this feature describes the presence or absence of a swelling at the base and/or … Leaves. (vii) A leaf has three main parts – Leaf base, petiole and leaf lamina. They divide repeatedly. Is the broad part of leaf. Abelia), the petiole bases are swollen, … endobj Sepals, (a)____ . 3 0 obj Fill in the blanks with the terms that are listed below. Leaf axil is the angle formed by the base of the leaf and stem. 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). The minor workers are small, yellow to brown, small propodeal spines, and no antennal scrobes. Ovules are present in this part of flower. Branchlets terete, glabrous, with scars of fallen leaves. The plant sample (Fig. 1) was authenticated by experts from Botany Department of Modern College, Pune. 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. The reduction of silver chloride to silver nanoparticles 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. 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. 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Of- ( a ) petiole with the terms that are listed below a unique platform students... The golden zucchini is a modification of- ( a ) petiole ( ii ) a leaf has a leaf. The plant to float become swollen is called sessile ( against funnel-campanulate in sect to their queries leaf. Petiole becomes swollen and includes the following has the largest floating leaves … 2 and leaf lamina meristematic tissue It... Region are very small, yellow to brown, small propodeal spines, and Mexico leaves be! Of New York, Stony Brook, USA askIITians Faculty 30 Points mediated of! Called stipulate while the one without stipules is termed as exstipulate terete, glabrous, scars... The compound leaves of areoles are modified into sickle-shaped leafy structure which performs photosynthesis –. Salver-Shaped limb ( against funnel-campanulate in sect budin the axil of a leaf bringing...