3. (i) A (ii) B (iii) C (iv) D (v) E II. b) It prevents the plant parts from heating up. Answer: Lenticels are minute, permanent openings which may develop in the young stems of woody plants. (iv) Water escapes in the form of water vapour. (iv) 1. (v) State the purpose of setting up test tube B. Question 1: Transpiration and Guttation. Holes present on the surface of the stems and twigs for transpiration. Answer: On a hot sunny day, the rate of transpiration exceeds the rate of water absorption by roots. a. Transpirational theory was proposed by Dixon and Jolly. 4)define cohesive and adhesive forces. This force helps in the movement of water as well as the … Chapter 6 Life Processes Class 10 Science Important Questions and Answers PDF will help you in scoring more marks. Question 7 How […] How differently would the results have been if the plants were exposed to light? Complete the following sentences with appropriate words : 1. Q 8. The pH of the guard cells increases during day time. Question 4: Where are stomata generally found ? Transpiration is the evaporation of water from plants. Loss of water in the form of vapour from aerial parts of the plant. 7. Transpiration definition, an action or instance of transpiring. 3. 8. Question 13: What are the disadvantages of transpiration ? Answer: When water is lost by evaporation (transpiration) heat energy is taken up from the plant body to vapourize the water, here the water is rapidly taken up by the roots and again released through the leaves by transpiration. If false rewrite the wrong statement in its correct form: 1. The process of release of water in the form of water vapor is called transpiration. 7. Transpiration Pull. (ii) What is the biological term for the above structure? In this page, you can find CBSE Class 10 Science Chapter 6 Extra Questions and Answers Life Processes Pdf free download, NCERT Extra Questions for Class 10 Science will make your practice complete. Answer: Transpiration rate in such plants is very high during mid day and exceeds the water absorption rate of the roots. (i) Name the structure shown. (iv) Gives rigidity and protection to the cell. Potometer is an instrument for measuring the rate of the most transpiration in a herbaceous plant like Balsam occurs through which part. In bright sunlight the level of water decreases quickly. Guttation Versus Transpiration. 2. Question 2 What is the function of transpiration? (v) Define the term ‘transpiration’. (ii) It is process in which water in the form of vapours are released from the aerial parts like leaves and soft stems of the plant. Answer : Odd term : Phagocytosis. Answer: (a) Light intensity: It increases or decreases the rate of transpiration. Question 3 What is transpiration? Write the functional activity of the following structures: 1. Study the same and then answer the questions that follow: (i) What is the colour of dry cobalt chloride paper? (v) E,  II. 2. leaves may become narrow. 5. (ii) Due to high rate of transpiration plant suffer from loss of turgidity. Class 12 Class 11 Class 10 Class 9 Class 8 Class 7 Class 6. Answer: 1. Evaporation is a physiological process. If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware. Transpiration Definition. Transpiration ICSE Class-10 Concise Selina Solutions Chapter-5. Answer: Question 5: Transpiration and Translocation. Thus, the root hair with its semi-permeable membrane and hypertonic cell sap establish an osmotic system with the water available in the soil surrounding the root hair. Transpiration, Photosynthesis, Phagocytosis, Guttation. 26.10.2019 English Secondary School +50 pts. 3)what do you mean by transpiration pull? Question 8: Why do some herbaceous plants show wilting of leaves during mid-day which again recover in the evening ? Transpiration is the loss of water In the form of water vapour from the leaves of the plant. ICSE Solutions for Chapter 3 Absorption by Roots- The Process Involved Class 10 Biology. Hydathode: A water secreting gland found on the edges and tips of leaves of many plants. Answer: Question 8: Guttation and Bleeding. Transpiration 2. (iii) Why is the pot covered with a plastic sheet ? Through these lenticels, gaseous exchange occurs between the soil and inner living cells. The 10% of the atmospheric moisture is contributed by the transpiration whereas the rest of it is from the evaporation. Answer: 1. Transpiration is the process by which excess water in plants is lost to the atmosphere in the form of water vapour through tiny pores present on the surface of the leaf called stomata. Multiple Choice Type Question 1: Absorption of … It takes place through the thin cuticle covering the leaves of the plant. Where are they found ? It may take place from any part of the plant body. Study the same and ansvver the questions that follow : (i) Name the apparatus. State its two functions. 5. (True) 5. It takes place through the sweat pores of the sweat glands. (i) A,  V. (v) D and E. Question 11: Given below is an apparatus used to study a particular process in plants. (True) 8. In this process, loss of water in the form of vapours through leaves are observed. Transpiration, on the other hand, happens during the day and usually when there's dry heat. (iii) What is the function of the part labeled A? asked Nov 3, 2017 in Class X Science by aditya23 (-2,145 points) 0 votes. Transpiration, in botany, a plant’s loss of water, mainly though the stomates of leaves. (ii) Lenticular transpiration. The number of stomata may be reduced. 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. It may also be due to blocking of the xylem elements, pathogens or parasites. . Answer: Because of their small size, guard cells are rapidly influenced by turgor changes. Will you expect any difference in weight ? Study the diagram and answer the following questions: (i) Name the process intended for study. Chapter 3 Absorption by Roots- The Process Involved Questions Answers Class 10 Biology 03 Dec, 2020 0 Comments. The leaves of the Xerophytic plants have cuticular wax. This is called the cohesion-tension model of water transport. Write the correct answer out of the five available choices given under each question: I. Season in which transpiration rate is the highest. Five plants A, B, C, D and E were placed in a beaker containing water. See more. Question 4: Given below is an experimental set up to study a particular process : (i) Name the process being studied. Transpiration pull will be maximum under which of the following conditions ? Performance & security by Cloudflare, Please complete the security check to access. 5. Question 5 Name the various cells through which water moves upwards to reach the leaves? absorption by root class 10 (biology) short questions 1)how is root hair structurally adapted for absorption of water from the soil? so water is pulled up through the plant. 9. (iv) What is the function of the part marked ‘reservoir’? It is a non-cellular waxy layer secreted by the epidermis and it surrounds the epidermis. Answer: (i) Stomata surrounded by epidermal cells. Answer: During day time transpiration rate is very high. About Us. Answer: (i) Transpiration (ii) It is the process by which plants lose water as vapours through the aerial parts. Transpiration is not simply a hazard of plant life. (iv) The opening and dosing mechanism of stomata is regulated by the amount of water and solutes present in the guard cells. Nov 23,2020 - Define transpiration. (iii) It helps in distribution of water to all parts of the plants. Also define transpiration pull. 4. (d) Stop growing and gradually die of starvation, 5. Column ‘II’ is a list of items related to ideas in Column ‘I’. Transpiration is very important for maintaining moisture conditions in the environment. Mention, if the following statements are True or False. As a result of this leaves collapse and plant wilts. The OP increase and water potential decreases. Answer: Transpiration is a process in which excess of water is lost in the form of vapours from the aerial parts of the plant. To obtain a continuous supply of minerals it has to absorb large quantity of water. Question 1: Define transpiration. Transpiration is the process by which plants absorb water from the soil, circulate it to all the branches and leaves to eventually release water vapor in the atmosphere through the pores of the leaves. Question 9: What is the advantage of wilting to a plant ? Transpiration ICSE Class-10 Concise Selina Solutions Chapter-5. Guard cells, 5. We provide step by step Solutions for ICSE Biology Class 10 Solutions Pdf. 4. Transpiration is an essential process for the plants because : (i) It creates a suction pull (transpiration pull) due to which water and minerals rise high up in the tall trees. Cuticular transpiration takes place through the cuticle (waxy layer) covering the leaves. Question 4: Where are stomata generally found ? 0 votes. (i) A (ii) B (iii) C (iv) D (v) E III. Answer: (i) 1. Answer: Stomata are generally found on the epidermis of the leaf. Question 2: Land plants die if their foots remain water logged. 9. Hydathodes send out water in the form of droplets. (b) Humidity of the atmosphere. Answer: (i) Transpiration: Loss of water as water vapour from aerial parts of the plant. (iv) D,  III. Thus, it helps in ascent of sap. Transpiration is the process by which excess water in plants is lost to the atmosphere in the form of water vapour through tiny pores present on the surface of the leaf called stomata. Transpiration—the loss of water vapor to the atmosphere through stomata—is a passive process, meaning that metabolic energy in the form of ATP is not required for water movement.The energy driving transpiration is the difference in energy between the water in the soil and the water in the atmosphere. Exam. Answer: The plants absorb much more water than their requirement because: (a) They require more mineral salts for their growth and minerals are present in very small quantity in water (b) Most of the water is lost through transpiration. Oct 20,2020 - Define the term transpiration? This is called the transpiration stream. (iii) Weight of test tube A will decrease after the experiment because water will be lost from it through the leaves by transpiration,. (a) Open stomach, dry atmosphere and moist soil. (iv) Describe the mechanism which brings about the change in the structure depicted in A and B. Exercise (A) Multiple Choice Type Question 1: Transpiration pull will be maximum under which set of the following conditions? (ii) Name the parts numbered 1-5. Transpiration occurs when the leaves of a tree allow water to exit into the air by means of tiny holes called stomata. Question 3: What is meant by the term transpiration stream ? The escape of plant sap from the ruptured or cut surfaces of the plant due to root pressure. Guttation takes place generally at Night. 10. Question 1 Name the two conducting tissues of plants? On windy day level of water decreases very quickly. Experiment to show transpiration process: Procedure: (i) Take a healthy potted plant and cover the pot with the help of rubber sheet. Question 2: Name the three types of transpiration. If the rate of transpiration becomes more than the rate of photosynthesis, plants will: (a) Continue to live, but will not be able to store food (b) Be killed instantly (c) Grow more vigorously because more energy will be available . Wilting: The collapse of leaves due to unfavourable water relations. In which beaker would you expect the greatest decrease in weight? Question 1: Transplanting of seedlings to flowerbed in the evening is better than doing so in the morning. (iv) It is a control experiment where the purpose of using test tube B is to compare the level of water in both test tubes. Study the same and answer the questions that follow: (i) Name the pis labeled A and B. It protects the surface and reduces water loss. Question 5: The figure given below represents an experimental set up with a weighing machine to demonstrate a particular process in plants. 6. Answer : Balsam is a herbaceous plant that loses too much of water by excessive transpiration, i.e., the rate of transpiration is more than the rate of absorption. Explain the transpiration pull theory. Answer: (i) Stomatal transpiration. 4. A thick layer of cuticle on the leaf surface help to decrease transpiration. Bleeding is the flow of the plant sap at the sites of injury or cuts. Loss of water as droplets through leaves of an intact plant. Question 4 Name the two kinds of cells of xylem? (iii) Water escapes through stomata and lenticels. This consists of 1 mark Questions, 3 Mark Numericals Questions, 5 Marks Numerical Questions and previous year questions from Chemical Reactions and Equations Chapter. What is a Reseller Certificate? Stomata 5. Guttation occurs through stomata. The theory states that water lost from mesophyll cells by transpiration. 3. Question 8: (i) Name the organ in which guard cells are located and mention the main functions of these. It is used for the process of osmosis as semi- permeable membrane. Transpiration is a physiological process. (ii) Explain the process mentioned in (i) above. (iii) Regulates opening & dosing of Stomata. More transpiration occurs from the upper surface of a leaf. It is a physical change controlled by the temperature and humidity of the atmosphere. (ii) Explain the process named in (i) above. B) and the transpiration stops. The beakers were then left for few hours and at the end of the experimental period, weights of each beaker were taken. 2)root hairs become flaccid,when fertilizers are added to the moist soil around it. In this experiment which plant can be considered as the uncontrolled one? The questions involved in ICSE Solutions are important questions that can be asked in the final exam. NCERT Easy Reading. Please enable Cookies and reload the page. Answer: Question 7: Stomata and Hydathodes. (iv) How many leaf veins have been shown in this section ? Answer: Older portions of the root do not have root hairs. It is also called exudation. (v) The purpose of setting up test-tube B is to show that in the absence of plant, there is no change in the level of water. Answer: Question 2: Transpiration and Evaporation. Bleeding 7. (iv) Why is the surface of water covered with oil. Question 7: Forest bring in the rain, transpiration is the cause. In leaves, some amount of water is used for photosynthesis and excess water is released into atmosphere through openings called as stomata. Answer: (i) (b)   (ii) (d)   (iii) (e)   (iv) (a)   (v) (c), ICSE Previous Year Question Papers Class 10, ICSE Solutions for Class 10 Biology – Transpiration, Concise Mathematics Class 10 ICSE Solutions, Concise Chemistry Class 10 ICSE Solutions, Concise Mathematics Class 9 ICSE Solutions, Plus Two Computerized Accounting Practical Question Paper March 2019, Plus One Economics Chapter Wise Previous Questions Chapter 7 Employment – Growth, Informalisation and Related Issues, Plus One Economics Chapter Wise Previous Questions Chapter 6 Rural Development, Plus One Economics Chapter Wise Previous Questions Chapter 5 Human Capital Formation in India. (vi) The above structure helps in the process of transpiration. We Provide Answer of Progress Check , MCQs, Very Short Answer Type, Short Answer Type, Long Answer Type Questions and Structured / Applications / Skill Type Questions of Exercise-5 Transpiration ICSE Class-10 Concise.Visit official Website CISCE for detail information about ICSE Board Class-10. Summer 3. (iii) The plastic sheet will not allow the moisture of the mud of the pot to come out and affect the result. The absorbed … (ii) Mention one limitation of this apparatus. In dim light or on a cloudy day the stomata are partially closed reducing the rate of transpiration. Transpiration refers to the movement of water vapor through the stoma to the atmosphere. As a result to excessive transpiration and the seedling will wilt and ultimately die. Palisade tissue, 4. In the air above, the moisture forms clouds and soon falls as rain. In hot summer days, plant cooling is due to : (a) Loss of water vapours from leaves (b) Transport of water in plant (c) Loss of lkjuid water (d) Loss of water from entire plant, 4. This consists of 1 mark Questions, 3 Mark Numericals Questions, 5 Marks Numerical Questions and previous year questions from Chemical Reactions and … Lenticel: A pore in the periderm of a woody stem. Alleen Test Solutions. After a few minutes the cohalt chloride paper shows change in colour from blue to pink. Explain why. Our Biology experts have provided answers for ‘True or False’ questions from your textbook with supporting reasons for each answer. The DPD increases in mesophyll cells due to loss of water causing cells to absorb water from neighbouring cellsby the process of endosmosis. 4. 3. Some amount of water remain unused by the plant is released by stomata present on the leaves. Answer: Plants absorb more water than required because minerals are present in extremely small quantity in absorbed water. Present on the edges and tips of leaves of many plants. It is considered as the essential evaporation of water through the leaves. Besides, discover the factors affecting transpiration with elaborate explanations by a Biology expert in our video lessons. Transpiration pull or the suction force is the force which aids in drawing the water upward from roots to leaves. (I) A (ii) B (iii) C (iv) D (v) E V. The difference of weight would b maximum between: (i) A and B (ii) A and C (iii) A and D (iv) A and E (v) D and E Answer: I. Which side of the leaf has more stomata ? (i) A,  IV. It has reticulate venation. However, transpiration is tightly controlled. ADVERTISEMENTS: The below mentioned article includes a collection of thirteen experiments on transpiration. 7. 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