Their openings cannot be regulated. A minimal amount of water is lost through lenticels. Transpiration decreases the water potential in the stele causing water to move in and pull upward into the leaves and other areas of low water potential. (vi) Cuticular transpiration occurs through the cuticle which is present on the epidermis of leaves & herbaceous stem. e) The apparatus to record the rate of transpiration in a cut shoot. These openings are called Lenticels and the transpiration that takes place through term is known as Lenticular Transpiration. Reason: Hydathodes are special pores present on the ends of leaf veins through which guttation occurs and water droplets are given out. Cuticle, lenticels and stomata are the three openings through which transpiration occurs. However, it only uses a small amount. In botany, a stoma (plural "stomata"), also called a stomate (plural "stomates") is a pore, found in the epidermis of leaves, stems, and other organs, that controls the rate of gas exchange.The pore is bordered by a pair of specialized parenchyma cells known as guard cells that are responsible for regulating the size of the stomatal opening.. about 10% of total transpiration. Solution:-The intact plant loses water in the form of droplets is called Guttation. We all know that plants need water. (c) An instrument used to find the rate of transpiration, (d) A plant in which the stomata are sunken. Cuticular transpiration takes place through the cuticle (waxy layer) covering the leaves. 013368718X_CH23_357-376.indd 17 1/5/09 12:36:34 PM Solution Show Solution Cuticle, lenticels and stomata are the three openings through which transpiration occurs. Stomata are minute openings in the epidermal layer of leaves. OR The process by which plants lose water in the form of droplets. (vi) The paper which is used to show loss of water through stoma of a leaf. Cuticular transpiration (through leaves and stem) – The water lost through the impermeable covering present on the leaves and stem of the plant called the cuticle. Stomata on the other hand are minute openings in the epidermal layer of leaves through which exchange of gases as well as transpiration occurs. . (f) Any two parts of a leaf which allows transpiration. 1. (e) The apparatus to record the rate of transpiration in a cut shoot. 1-5 per cent of water loss takes place through lenticular transpiration. Water is able to leave the plant through the leaves, stem, and flowers. Solution:- Lenticels (b) The process by which the intact plant loses water in the form of droplets. Figure 16.2.4.1 Stoma. CISCE ICSE Class 10. (v) Opening found on the under surface of dorsiventral leaves. Transpiration occurs through young or mature stem is called as Cauline transpiration. 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. Cuticular transpiration: Cuticle is an impermeable covering present on the leaves and stem. OR Loss of water as droplets from the margins of certain leaves. More transpiration occurs from the undersurface of a dicot leaf. (c) An instrument used to find the rate of transpiration. The ascent of sap that is driven by transpiration depends on the following properties of water: Cohesion – This is the mutual attraction between molecules of water. n) The process in which a plant loses its water in the form of liquid through hydathodes. Find 6 Answers & Solutions for the question Through which openings on the stem, transpiration occurs? Lenticels . 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