Get 5 credit points for each correct answer. Name the Following: Openings on the Stem Through Which Transpiration Occurs Concept: Transpiration - Process and Significance. However, it only uses a small amount. This Bean shaped gland ola organs maintain water balance Dash. The exchange of oxygen and carbon dioxide in the leaf (as well as the loss of water vapor in transpiration) occurs through pores called stomata (singular = stoma). (a) Openings on the stem through which transpiration occurs (b) The process by which the intact plant loses water in the form of droplets (c) An instrument used to find the rate of transpiration (d) A plant in which the stomata are sunken (e) The apparatus to record the rate of transpiration in a … Transpiration is the evaporation of water from plants. 013368718X_CH23_357-376.indd 17 1/5/09 12:36:34 PM Cuticular Transpiration :- cuticle is impervious to water still it looses some water i.e. Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. 6. (c) An instrument used to find the rate of transpiration (d) A plant in which the stomata are sunken (e) The apparatus to record the rate of transpiration in a cut shoot. Lenticular transpiration takes place through the small openings in the corky tissue covering the stem. Types of transpiration include: stomatal, lenticular and cuticular transpiration. Stomatal transpiration: This accounts for 95% of total transpiration in plants. Solution Show Solution. Cuticular transpiration is lesser in xerophytes because they have thicker cuticles. 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. Solution:-Lenticels The intact plant loses water in the form of droplets is called Guttation. Transpiration. (c) An instrument used to find the rate of transpiration. (e) The apparatus to record the rate of transpiration in a cut shoot. 2. (ii) Lenticular transpiration: Lenticular transpiration is the loss of water vapours through lenticels present in the stem of some plants. The stoma are flanked by watchman cells that open and close the pore. When absorption of water by the roots fails to keep up with the rate of transpiration, loss of turgor occurs, and the stomata close. (c) An instrument used to find the rate of transpiration. e) The apparatus to record the rate of transpiration in a cut shoot. Reason: Hydathodes are special pores present on the ends of leaf veins through which guttation occurs and water droplets are given out. 1-5 per cent of water loss takes place through lenticular transpiration. Lenticular transpiration takes place through the small openings in the corky tissue covering the stem. in a continuous transpiration stream: root → stem → leaf Transpiration produces a tension or ‘pull’ on the water in the xylem vessels by the leaves. Solution:-The intact plant loses water in the form of droplets is called Guttation. Lenticels . out of the leaf. Cuticular transpiration: Cuticle is an impermeable covering present on the leaves and stem. Find 6 Answers & Solutions for the question Through which openings on the stem, transpiration occurs? (viii) The structure through which most of the transpiration takes place. Stomatal transpiration takes place through the stomata on the leaves. Delhi. Cuticular transpiration. ABA binds to receptors at the surface of the plasma membrane of the guard … Solution Show Solution Cuticle, lenticels and stomata are the three openings through which transpiration occurs. Maximum transpiration occur in— A. Xerophytic plants. How do plants control the opening and the closing of stomata? -- HUMIDITY: high humidity = decrease in transpiration because dry air makes diffusion of water out of leaf occur more rapidly-- WIND: increases evaporation from leaves/increased transpiration rate because stomata will be open, water will evaporate causing continuous transpiration… Transpiration mainly takes place through surface of leaves. Parts of plant like stem, small pores on leaves and flowers evaporate the water to the atmosphere. Solution:-Lenticels (b) The process by which the intact plant loses water in the form of droplets. When the plant has excessive, water the guard cells become turgid and the ostiole opens. toppr. 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. When the plant opens its stomata to let in carbon dioxide, water on the surface of the cells of the spongy mesophyll and palisade mesophyllevaporates and diffuses out of the leaf. Text for ‘Transpiration – Water Movement through Plants’ Tracy M. Sterling, Ph.D., 2004 Department of Entomology, Plant Pathology and Weed Science New Mexico State University tsterlin@nmsu.edu Question Papers 301. The exchange of oxygen and carbon dioxide in the leaf (as well as the loss of water vapor in transpiration) occurs through pores called stomata (singular = stoma). Cuticle, lenticels and stomata are the three openings through which transpiration occurs. Transpiration normally takes place through stomatal openings of leaves or through particular openings of stem surface or through the cuticu­lar surface, or a combination of paths mentioned above. There are more stomatal openings on the undersurface of a dicot leaf and therefore, more transpiration occurs from the … 3. If the loss of turgor extends to the rest of the leaf and stem, the plant wilts. Normally stomata open when the light strikes the leaf in the morning and close during the night. (vi) The paper which is used to show loss of water through stoma of a leaf. 4. 3. A continuous column of water is therefore pulled up the stem in the transpiration stream by evaporation from the leaves. Solution:- evaporates. answr. Transpiration is the mechanism which powers the “pump” drawing water upwards in a plant from the roots to the leaves. Stomata are the minute openings found in the epidermal layer of the leaves. A stoma is surrounded by two bean shaped guard cells which regulate its opening and closing. Normally stomata open when the light strikes the leaf in the morning and close during the night. The lenticular transpiration is 1-2% of the total transpiration by a plant. Sometimes water may evaporate through certain other openings present on the older stems. Search for: Biology Quiz on “TRANSPIRATION” for SSC 2016. (a) Openings on the stem through which transpiration occurs. Transpiration is important in plants for three major reasons: Cooling of the plant: the loss of water vapour from the plant cools down the plant when the weather is very hot. 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. Leaf transpiration happens through stomata, and can be considered as a vital "expense" connected with the opening of the stomata to permit the dispersion Textbook ... openings on the stem through which transpiration occurs . 4. 2. (a) State whether the following statements are True (T) Or False (F)? Existing Student Sign In x. Forgot password? Stomatal transpiration (through leaves) – Loss of water through specialized pores present in the lower surface of leaves called stomata.It accounts for around 80 to 90% of the total water loss from plants. Solution:-Lenticels The intact plant loses water in the form of droplets is called Guttation. the process by which plants release water vapor into the air through stomata. Solution:-(b) The process by which the intact plant loses water in the form of droplets. The leaves use only a small amount of water for photosynthesis (food-making) , so it releases the excess of water through the stomata (microsopic mouths on the leaves), turning the air humid. d) A plant in which the stomata are sunken. When water evaporates through the leaves, a pull is created through the xylem, and water moves back to the leaves. Transpiration is de ned as the loss of water vapour by the plant. 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. (f) Any two parts of a leaf which allows transpiration. Which of the following is produced in the liver? 3. Solution:-The intact plant loses water in the form of droplets is called Guttation. Solution:-The intact plant loses water in the form of droplets is called Guttation. Lenticular Transpiration: It is the evaporation of water through lenticels. (d) A plant in which the stomata are sunken. Solution:-(b) The process by which the intact plant loses water in the form of droplets. Respiration In Leaves. Question 38. Upvote(1) How satisfied are you with the answer? . (h) Loss of water as droplets from the margins of certain leave. Transpiration is used to describe the specific action of water evaporating from a plant, but the word transpiration is also used to generally describe how water moves through plants. Respiratory opening found on the stem of Woody plants. Name the opening on the stem through which transpiration occurs. 7. The air in case of stem diffuses into the stomata and moves through different parts of the cell to respire. Cuticular transpiration- Occurs through surface of stem and leaves; Lenticular transpiration- Occurs through lenticels; Occurs mainly through openings called stomata. In angiosperms and gymnosperms (but not in ferns and lycopsids), Abscisic acid (ABA)is the hormone that triggers closing of the stomata when soil water is insufficient to keep up with transpiration (which often occurs around mid-day). Lenticels are minute openings in the bark of branches and twigs. Please enter the OTP sent to your mobile number: Get copy of last few answers in your mail, The advantages of the cell protoplasm being colloidal in nature. The best one gets 25 in all. transpiration. Describe an experiment to prove that transpiration occurs more from the under surface of dorsiventral leaves. Potometer is an instrument for measuring the rate of the most transpiration in a herbaceous plant like Balsam occurs through which part. 3. (a) Openings on the stem through which transpiration (b) The process by which the intact plant loses water 1 Name the following: occurs. Answered By . Figure 16.2.4.1 Stoma. Name the opening on the stem through which transpiration occurs. 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