Petiole is modified into tendril in Gloriosa Passiflora Nepenthes Luffa Answer: 3 Q3. The morphological nature of such spines can be pointed out by the presence of a bud in their axis. Thorns are woody, sharp, straight and pointed structures. Question 18. Other articles where Spine is discussed: angiosperm: Leaf modifications: Spines are also modified leaves. answered by Afreen Ibrahim. To reduce loss of water through transpiration leaves of cactus plants are modified into spines. Like sharp-pointed daggers, they are a hazard when climbing into date palms to pick the fruit. Leaves are modified into spines : Opuntia Stem has sharp thorns : _____ Login. Answer this multiple choice objective question and get explanation and result.It is provided by OnlineTyari in English Thank you for A2A. For example in They give protection to the plants from herbivores. Median response … Solution Show Solution. Thorns. In Acacia nilotica and Zizyphus the stipules are modified into spines. Modified Leaves. The cactus plant grows in a desert where there is a shortage of water. Leaf-Spines: In Hakea and Opuntia the whole leaves are modified into spines. Correct Answer: Opuntia. Text Solution. Note the sharp spines on the cactus above. Different part of a leaf or entire leaf may be modified in to spines. Question By default show hide Solutions. Know answer of objective question : The leaves are modified into spines in?. 4. Xerophytes are plants growing in dry climate. What is a tendril ? Any part of the leaf may get modified in to spine. Cactus spines are also known as modified bud scales, which also are modified leaves. In prickly poppy, leaves bear spines on the margin. Want to see this answer and more? 300+ VIEWS. Besides, they also provide protection to the plant from grazing animals. Spines of cactus plants are modified leaves or shoots located in the axil of a leaf. check_circle Expert Answer. It helps if you think of cactus as a large stem with leaves (spines). Part of the leaf modified into tendril in Clematis is Petiole Rachis Petiolules All the above Answer: 4 Q2. Check out a sample Q&A here. Here's your answer.. _____ Cacti have spines instead of leaves. These spines help in storing water in the steams by reducing the amount of transpiration. Leaf MCQ (Multiple Choice Questions and Answers) Q1. 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. Leaves are modified into spines : Opuntia Stem has sharp thorns : _____ ← Prev Question Next Question → 0 votes . In cactus spines are found in groups which is called as areole. In Opuntia , the leaves of areoles are modified into is related to How well do you know about plant leaf?. Spines: Leaves are modified into spines to reduce water loss, like cactus. CONTINUE READING BELOW. Explanation: In Opuntia, leaves become modified into spines to avoid transpiration so as to save water for desert adaptation. 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. Spines are sharp, pointed structures which are modified leaves. Modified branches or stem are known as thorns. Stipular Spines: Stipules can become modified into spiines for defense. In such cases the stems become green and carry on photosynthesis. The leaf parts become modified into spines in order to protect the plants from grazing animals and excessive transpiration.
Reason :-In xerophytic areas rate of transpiration is high , so plants develop various adaptions to minimize transpiration. Check Answer and Solu ask related question comment. answer comment .. 1 Answer. 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. hiipranav hiipranav Answer: Because of the low concentration of water and moisture in that environment. 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). In the following photos of plants, the leaves are quite different from the "normal" leaves we envision. Leaf-spines : In this type the leaves become wholly or partially modified into sharp pointed structures known as spines. The leaves are modified into the spines which can be observed on the stems. This process is called transpiration. Loss of water from the leaves tend the roots to pull more water from the ground. ADVERTISEMENT. No, the cactus performs this through stems as the leaves are modified into spines. 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. Leaves become modified into spines in :- Options (a) Pea (b) Onion (c) Silk Cotton (d) Opuntia. 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. Midrib modified into tendril, e.g., Nepenthes. The leaves in a cactus plant are modified into spines to prevent the loss of water. 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. 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