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    Thorns also provide protection to the plant from … Here you can create your own quiz and questions like In Opuntia , the leaves of areoles are modified into also and share with your friends. What is a tendril ? Note the sharp spines on the cactus above. ADVERTISEMENT. Want to see the step-by-step answer? The cactus plant grows in a desert where there is a shortage of water. Other articles where Spine is discussed: angiosperm: Leaf modifications: Spines are also modified leaves. Bud Scales-are tough, overlapping, waterproof leaves that protect buds from frost, desiccation, and pathogens. The spine primordia is produced at the base of the axillary bud's shoot apical meristem; the location where leaf primordia also grows. 300+ VIEWS. Link to raw image collection of modified leaves. Leaves become modified into spines in :- 600+ LIKES. ask related question comment. In cacti, spines are wholly transformed leaves that protect the plant from herbivores, radiate heat from the stem during the day, and collect and drip condensed water vapour during the cooler night. Thank you for A2A. 500+ VIEWS . Question 18. They give protection to the plants from herbivores. Tendrils and spines are two such structures. Cactus spines are also known as modified bud scales, which also are modified leaves. These spines help in storing water in the steams by reducing the amount of transpiration. In Opuntia, the leaves of areoles are modified into Spines Glochidia Scales Tendrils Answer: 1 Q4. Thorns. asked in Morphology of Flowering Plants by Lifeeasy Biology. The leaves are modified into the spines which can be observed on the stems. hiipranav hiipranav Answer: Because of the low concentration of water and moisture in that environment. But for the succulent plants to be called Cactus, they need to have a special structure which is present in the Cactus family. Left: A simple leaf in which the blade is not divided into leaflets. In Acacia nilotica and Zizyphus the stipules are modified into spines. winter. These questions will build your knowledge and your own create quiz will build yours and others people knowledge. They can be branched or simple. Angiosperm - Angiosperm - Leaf modifications: Whole leaves or parts of leaves are often modified for special functions, such as for climbing and substrate attachment, storage, protection against predation or climatic conditions, or trapping and digesting insect prey. Each leaf has a very different shape and function, yet all are homologous structures, derived from a common ancestral form.The pitcher plant and Venus' flytrap use leaves to trap and digest insects. The basal leaf segments (pinnae) are modified into stiff pines. Give a biological reason why in some xerophytes ,leaves are modified into spines. Part of the leaf modified into tendril in Clematis is Petiole Rachis Petiolules All the above Answer: 4 Q2. Explanation: In Opuntia, leaves become modified into spines to avoid transpiration so as to save water for desert adaptation. Leaves are modified into spines in Opuntia (xerophytes) so as to reduce the surface area and minimize rate of water loss by evaporation and transpiration. Solution: The spines present on Opuntia represent the reduced leaves. Zizyphus . It helps if you think of cactus as a large stem with leaves (spines). To reduce loss of water through transpiration leaves of cactus plants are modified into spines.
    Reason :-In xerophytic areas rate of transpiration is high , so plants develop various adaptions to minimize transpiration. Succulence: In a dry environment, leaves may either become reduced, like in cacti, or, else, become succulent. therefore, it helps desert plant to save water in there body. They have variou adaptations to cut down transpiration:- 1. Correct Answer: Opuntia. View All. Spines are sharp, pointed structures which are modified leaves. Modified Leaves. Leaves of cactus plants are modified into spines to reduce loss of water through transpiration. Leaf MCQ (Multiple Choice Questions and Answers) Q1. The stems of this plant appear like – leaf, termed as- phylloclades which perform the process of photosynthesis. (ii) Spines : A pointed structure formed by the modification of entire leaf or part of a leaf is called a spine. The leaves in a cactus plant are modified into spines to prevent the loss of water. For example in They give protection to the plants from herbivores. e.g. Two examples of true spines (modified leaves). 500+ SHARES. Spines: Leaves are modified into spines to reduce water loss, like cactus. For example in Opuntia minute leaves of axillary buds develop into spines. Stipular Spines: Stipules can become modified into spiines for defense. Assertion :- In some xerophytic plants stem becomes green , flat,leaf like and leaves are modified into spines . In pea, the leaves are modified into tendrils to help them in climbing around support, in onion leaves are modified to fleshy succulent to store food. e.g., In Opuntia leaves of axillary branches are modified into spines. Stipules and Stipular Spines. Xerophytes are plants growing in dry climate. Answer this multiple choice objective question and get explanation and result.It is provided by OnlineTyari in English Give biological reasons for the following statements : In some xerophytes leaves are modified into spines - Biology. Any part of the leaf may get modified in to spine. Leaf-spines : In this type the leaves become wholly or partially modified into sharp pointed structures known as spines. Remember. This process is called transpiration. Answer this multiple choice objective question and get explanation and result.It is provided by OnlineTyari in English Pea Onion Silk Cotton Opuntia Answer : D Related Video. Cactus is a part of the Succulent family because it has fleshy stems which store water. ShelchavCactus spines are actually modified leaves. 2 views. Leaves become modified into spines in :- Options (a) Pea (b) Onion (c) Silk Cotton (d) Opuntia. Modified branches or stem are known as thorns. Question By default show hide Solutions. Text Solution. Leaves become modified into spines in 2:29 2.4k LIKES. Bud scales form before the onset of unfavorable growing seasons i.e. Know answer of objective question : The leaves are modified into spines in ?. The leaf parts become modified into spines in order to protect the plants from grazing animals and excessive transpiration. because of the spines transpiration occurs less . This modification helps the plant to cut down transpiration and also protects the plants against the attacks of grazing animals. In desert plants,the leaves are modified into spines 2 See answers Geetu18 Geetu18 Answer: spines are hard so, it is not easy to loose water through spines. It is important for them to conserve water. The key difference between tendrils and spine is that tendrils are slender, coiling plant parts which are often modified leaves, leaf parts or stems while spine is a modified leaf, stipule or a part of leave that has a pointed end.. Plants have different types of structures in addition to leaves, stems and roots. 0 votes . Different part of a leaf or entire leaf may be modified in to spines. Numerous plants have spines of course, but in cacti, spines occur in clusters in the axil of leaves, even though the leaves are usually microscopic. Spines of cactus plants are modified leaves or shoots located in the axil of a leaf. In prickly poppy, leaves bear spines on the margin. answer comment .. 1 Answer. Scale leaves: In some plants, like onion and ginger, thin and dry or thick and fleshy scale leaves are present.Their function is to protect buds. Experts are waiting 24/7 to provide step-by-step solutions in as fast as 30 minutes! Want to see this answer and more? Like sharp-pointed daggers, they are a hazard when climbing into date palms to pick the fruit. Leaf-Spines: In Hakea and Opuntia the whole leaves are modified into spines. In the following photos of plants, the leaves are quite different from the "normal" leaves we envision. Why are the leaves of cactus plants modified into... morphology-of-flowering-plants. Cacti are xerophytes which have to survive in dry conditions. In cactus spines are found in groups which is called as areole. check_circle Expert Answer. Homology: Leave It To the Plants. Know answer of objective question : The leaves are modified into spines in?. Spines-leaves modified for protection. Most cactus morphologists have concluded that cactus spines are either modified leaves or modified bud scales (the difference is inconsequential because bud scales themselves are modified leaves). Median response … Petiole is modified into tendril in Gloriosa Passiflora Nepenthes Luffa Answer: 3 Q3. 200+ LIKES. Succulent leaves not only retain lots of moisture but also have a lower surface to volume ratio. The morphological nature of such spines can be pointed out by the presence of a bud in their axis. In the many species of the spurge family… CONTINUE READING BELOW. Answered - [Opuntias] [Australian Acacia] [Nepenthes] [Utricularia] are the options of mcq question The leaves are modified into spines in realted topics , NEET topics with 0 Attempts, 0 % Average Score, 1 Topic Tagged and 0 People Bookmarked this question which was asked on Nov 16, 2018 19:12 See Answer. Explain its use to the plant. Register; Test; Home; Q&A; Unanswered; Categories; Ask a Question; Learn; Ask a Question. No, the cactus performs this through stems as the leaves are modified into spines. Leaves are modified into spines : Opuntia Stem has sharp thorns : _____ ← Prev Question Next Question → 0 votes . Thorns are woody, sharp, straight and pointed structures. In Opuntia , the leaves of areoles are modified into is related to How well do you know about plant leaf?. Check Answer and Solu answered by Afreen Ibrahim. Though cactus spines are modified leaves, they do not contain any of the cells or tissues characteristics of leaves when they mature. 4. AIPMT 2015: The leaves are modified into spines in (A) Nepenthes (B) Australian Acacia (C) Opuntia (D) Utricularia (E) Tomarix.. Click here to get an answer to your question ️ why are the leaves of cactus modified into spines kushal9567 kushal9567 10.03.2018 Science Primary School Why are the leaves of cactus modified into spines 2 See answers Brainly User Brainly User Hey mate..! Solution Show Solution. Leaves release water from the stomata to cool the plant. Leaves are modified into spines : Opuntia Stem has sharp thorns : _____ Login. In such cases the stems become green and carry on photosynthesis. Loss of water from the leaves tend the roots to pull more water from the ground. Leaves are modified into spines, as the normal leaves transpire more water. Midrib modified into tendril, e.g., Nepenthes. Check out a sample Q&A here. Give biological reasons for the following statements : In some xerophytes leaves are modified into spines. Besides, they also provide protection to the plant from grazing animals. 300+ SHARES. Here's your answer.. _____ Cacti have spines instead of leaves. * See Answer *Response times vary by subject and question complexity. : a simple leaf in which the blade is not divided into leaflets Silk Cotton Opuntia Answer: D Video... Cool the plant to save water in the axil of a leaf is called a spine formed! Register ; Test ; Home ; Q & a ; Unanswered ; Categories ; Ask a Question and structures... Reason leaves are modified into spines in in some xerophytic plants stem becomes green, flat, leaf like and leaves are modified into.! A shortage of water modified bud scales form before the onset of unfavorable growing seasons i.e plant. Stem becomes green, flat, leaf like and leaves are modified.... 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