1 Mark Questions. The Editor. Leaves and their orientation- Number of leaves, the size and orientation of leaves, and the structural form of the leaves affect the rate of water loss. List in tabular form, two ways in which 'transpiration' is different from'translocation.' The amount of water lost by plants over a period of time refers to the rate of transpiration. Roots absorb water from the soil in order to transport it to the plant parts for photosynthesis. It may take place from any part of the plant body. You can watch our video lessons to understand different types of transpiration such as lenticular transpiration, cuticular transpiration and stomatal transpiration. B. Question 1. In the bag tied around the cactus pot ................................. During transpiration ,more the water absorbed by the roots , will the leaves will droop or wilt at the same rate. The upward movement of water against the gravitational pull is caused by the transpiration pull. asked Sep 1, 2018 in Biology by AnujPatel (53.4k points) transpiration; class-10; 0 votes. In Stomatal transpiration, water in the surface of the leaves is evaporated into the atmosphere when the stomatal opening opens. Eg. Class 10 Science Chapter 6 Important Questions of Life Processes updated for new academic session 2020-21 based on new NCERT Textbooks and following the latest CBSE Curriculum for session 2020-2021. If the answer is not available please wait for a while and a community member will probably answer this soon. NCERT CBSE Chapter 6 Download in Pdf Life processes – The processes that are necessary for an organism to stay alive. Want a call from us give your mobile number below, For any content/service related issues please contact on this number. 1 answer. List any three major factors that accelerate the rate of transpiration. To score more marks in your ICSE Class 10 Biology exam, you will have to write and practise the chapter questions and answers. Transpiration is important because a) It helps in absorption and upward movement of water and minerals from roots to leaves. Lenticels are a porous tissue found on the barks of woody stems and roots of dicots. The loss of excess water by diffusion through the stomata of leaves of a plant into the atmosphere is called transpiration. asked Jul 19, 2018 in Chemistry by Anukriti bharti (38.0k points) life processes; cbse; class-10; The amount of water lost by plants over a period of time refers to … Extramarks, an e-learning website offers online tutorials for ICSE class 10 Modes of Transpiration Chapter. During scarcity of water, roots absorb less water from the soil. On the upper part of leaf there present number of small opening or pores called stomata. Practice biology sample question papers to score high in exams. VIEW SOLUTION. Environmental Factors Affecting Transpiration, Factors Affecting the Rate of Evaporation, Significance of Genetics in the Process of Evolution, Diseases- Types of Diseases and Their Symptoms, Plant Differentiation and Development Process, Vedantu b) It prevents the plant parts from heating up. Rate of transpiration greatly depends on environmental factors such as: Stomata only open in the presence of light. 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. The loss of water from plants as water vapour through the pores of their leaves is called transpiration. The surface of mesophyll cells in leaves release a thin layer of water. Define the above mentioned process. Remaining 97% of water gets transpired. ... Guttation 9. Short answer questions. Register; Studyrankersonline. 2. Two types of forces, cohesive and adhesive force work together to bring about this upward pull. Best answer ... (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 … Photosynthesis and transpiration. Most of the water absorbed by the roots of a plant —as much as 99.5 percent—is not used for growth or metabolism; it is excess water, and it leaves the plant through transpiration. In such atmospheric conditions, water vapors accumulate around the transpiring organs and reduce the rate of diffusion. Answer: The loss of water in the form of water vapour from the aerial parts of the plant body is called Transpiration. Sorry!, This page is not available for now to bookmark. TopperLearning’s chapter resources for ICSE Class 10 Biology – Transpiration will help you grasp the concept of how plants lose water vapour. Water loss by lenticular transpiration is very less. Relative humidity means the amount of water vapor present in the atmosphere expressed as a percentage of the number of water vapors needed for saturation at that same temperature. During the gaseous exchange or from barks, stems, or other parts through pores, the excess water absorbed by roots and which remain unused is lost to the atmosphere in the form of water vapors. Various environmental factors, such as the presence of light, relative humidity, temperature, wind speed, availability of water, and cellular factors like the orientation of leaves, number of stomata, cuticles, and lenticels affect transpiration. Namely, stomatal transpiration- when it occurs through the stomata. Name the cell that surrounds the stoma. class-10; Share It On Facebook Twitter Email. Like all other life processes (eating, digestion, growth, etc.) Also, the cell sap of cells in leaves exert pressure on the outward of the cell wall. Still, air lowers the rate of transpiration. 1 Answer +1 vote . Absorption of water and transpiration is a cyclic process. Define transpiration. Transpiration in plants occurs only by three special structures. Although transpiration is an unavoidable phenomenon that takes place during the gaseous exchange in plants, it’s necessary and has its own set of benefits for the plant. Lenticular transpiration refers to water loss in the form of vapors through the lenticels of the plant. Less than 3% of total water absorbed by plant is utilized by plants for the development and metabolic processes. answered Apr 23, 2019 by Vivaan (76.0k points) selected Apr 23, 2019 by Farhat . Transpiration is the loss of water in the form of water vapours from the aerial parts of the plant. But all the water that roots absorb is not used up by the plants. Question 1. Sir  plant have no blood yet we sometimes say that a plant is "bleeding".How do we this answer????? Hydathode 10.Bleeding 11.Antitranspirants II. High temperature decreases relative humidity, which forces the stomata to open even in the dark, thus increasing the rate of transpiration. Hence, water in the form of vapor is lost through this layer. Question 6. This is also a kind of foliar transpiration. Cuticular transpiration takes place through the cuticle (waxy layer) covering the leaves. ... Class VII English (10) Class VII Social Science (29) Class VII Hindi (6) Class VII Computer (6) Class VI Maths (1.0k) Class VI Social Science (8) Class VI Science (505) Class VI English … Trophic … Water is necessary for plants but only a small amount of water taken up by the roots is used for growth and metabolism. The relative humidity of the atmosphere is inversely proportional to the rate of transpiration. Question 1 : State the function of lenticels. The 10% of the atmospheric moisture is contributed by the transpiration whereas the rest of it is from the evaporation. This loss of water in the leaves exerts a pull on the water in the xylem ducts and draws more water into the leaf. 3. This water also evaporates and the water vapors diffuse into the sub stomal space, which finally diffuses out by stomata. The excess water absorbed by the roots is eliminated from the plant body by the process of transpiration. Structured/Application/Skill type | Q 6.3 | Page 67. TRANSPIRATION The loss of water in the form of vapours from the living tissue of the aerial part of plants is called transpiration. Queries asked on Sunday & after 7pm from Monday to Saturday will be answered after 12pm the next working day. Guttation is a similar process to transpiration in which some plants exudate the drops of xylem sap on the edges of the leaves. With TopperLearning ’ s chapter resources for ICSE Class 10 Biology exam, will... Water needs to be excreted out but only a small amount of water vapour into the atmosphere is inversely to. 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