what is transpiration in biology class 10

DishaEducentre Biology for X ICSE Exhaustive Notes ~ 1 ~~ 1 ~ 4. (True) 8. (ii) It results in cooling of the plant in summer. 5. In the air above, the moisture forms clouds and soon falls as rain. Question 1: Draw a labeled diagram of the stomatal apparatus and label the following in it: Stoma, Guard cells, Chloroplast, Epidermal cells and Cell wall. Transpiration is best defined as (a) loss of water by the plant (b) evaporation of water from the aerial surfaces of a plant (c) loss of water, as water vapour, by a plant Stomatal transpiration 5. 7. It is considered as the essential evaporation of water through the leaves. (iv) What is the purpose of keeping the test tube B in the experimental set up? Answer: (i) Transpiration (ii) It is the process by which plants lose water as vapours through the aerial parts. To do so, our learning portal enables you with resources such as sample papers, practice tests and previous years’ question papers. Lenticels 4. Answer: Stomata are generally found on the epidermis of the leaf. Where are they found ? The process of getting rid of excess water in the form of water vapour through the stomata. Answer: 1. Question 4: Where are stomata generally found ? 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 . Loss of water from the aerial parts of a plant. Therefore, to prevent wilting they require excess of water. Main function of lenticel. (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. Answer: Plants absorb more water than required because minerals are present in extremely small quantity in absorbed water. (False, Evaporation is a physical process.) 10. Potometer is an instrument, used for measuring the rate of 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. 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. 10. Will you expect any difference in weight ? Briefly explain how does transpiration  help in upward conduction of water in the plants, Please explain the steps to measure transpiration, Explain the mechanism of stomatal transpiration step by step. 2. (v) Define the term ‘transpiration’. Root hairs are the extensions of the outer epidermal cells of the root. (ii) After a few hours, the CaCl2 vials were taken out and weighed again. Nucleus, 4. 8. (iv) It helps in elimination of excess of water absorbed by the roots. B) and the transpiration stops. 9. The leaves were removed from plant D in plant B, upper surfaces of all the leaves were covered with Vaseline, in plant C the lower surfaces of all the leaves were covered with Vaseline and plant E was exposed to strong light. Question 11: Describe any three conditions which affect transpiration. (True) 5. (iv) D,  III. (b) Humidity of the atmosphere: If the air outside is humid the rate of transpiration is reduced, since the outward diffusion of internal water vapour is affected. It is the process in which water droplets oozes out from the hydathodes present at the tip and margins of leaves. The heart is the pumping organ that squirts out blood. Question 4: Given below is an experimental set up to study a particular process : (i) Name the process being studied. This is how the two processes are interrelated. Guttation takes place generally at Night. 6. 3. Watch concept videos to understand the significance of stomatal transpiration. Answer : Odd term : Phagocytosis. The beakers were then left for few hours and at the end of the experimental period, weights of each beaker were taken. Study the diagram and answer the following questions: (i) Name the process intended for study. (iv) Describe the mechanism which brings about the change in the structure depicted in A and B. Science Class 10 Biology (India) Life processes Transportation in plants. (ii) It lowers the rate of transpiration thus conserving water. (iv) The opening and dosing mechanism of stomata is regulated by the amount of water and solutes present in the guard cells. (a) Open stomata, dry atmosphere and moist soil (b) Open stomata, high humid atmosphere and well irrigated soil (c) Open stomata, high humid atmosphere and dry soil (d) Close stomata, dry atmosphere and dry soil, 7. The water in each beaker was covered with a layer of oil. 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. Bleeding is the flow of the plant sap at the sites of injury or cuts. Woody trees 6. (vii) Five. The structures through which guttation occurs. 3. 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, NCC Certificate | What is NCC Certificate? These are located on the stems of woody plants. Loss of water as droplets through leaves of an intact plant. Cuficular transpiration, Lenticular transpiration, Stomatal transpiration, Gutation. Write the functional activity of the following structures: 1. Transpiration mostly occurs in leaves through special structures present on them called as stomat 3. Answer: Question 4: Cuticular and Lenticular transpiration. Hydathode: A water secreting gland found on the edges and tips of leaves of many plants. Question 5: Balsam plants wilt during midday even if the soil is well watered. The 10% of the atmospheric moisture is contributed by the transpiration whereas the rest of it is from the evaporation. Transpiration Introduction Most of the water a plant absorbs is not used for a plant’s daily functioning. Upper epidermis, 3. Guttation is the elimination of excess of water from plants through : (a) Stomata (b) Hydathodes (c) Lenticels (d) Wounds. Transpiration involves mainly the xylem cells which become active during absorption process by the roots. Mainly it occurs at the leaves while their stomata are open for the passage of CO 2 and O 2 during the process of photosynthesis. (ii) Explain the process named in (i) above. 2. 11.34) and other exposed parts of the plant. Water and dissolved mineral … After a few hours, CaCl2 vials were taken out and weighed again. Cuticular transpiration: Cuticle is an impermeable covering present on the leaves and stem. Plants lose water by guttation when: (a) Rate of transpiration is high (b) Soil is wet and the atmosphere is humid (c) Soil is dry and atmosphere is dry (d) Soil is wet and atmosphere is dry, 8. Hi sir can you tell any four advantages of transpiration???? Transpiration 2. (iii) A foreign […] TopperLearning’s chapter resources for ICSE Class 10 Biology – Transpiration will help you grasp the concept of how plants lose water vapour. (b) Humidity of the atmosphere. (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. 1 Mark Questions Answer : Lenticels help in facilitating the process of transpiration in woody plants. 5. (iii) Why axe glass slides placed over the dry cobalt chloride papers? This is called the transpiration stream. Answer : Odd term : Phagocytosis. Answer: Transpiration is a process in which excess of water is lost in the form of vapours from the aerial parts of the plant. The process by which excess of water is forced out directly from the tips of veins in the leaf. (iii) Water escapes through stomata and lenticels. Answer: (i) It results in ascent of sap by creating a suction force. (i) Name the structure shown. CBSE Class 10 Science Notes Chapter 6 Life Processes Pdf free download is part of Class 10 Science Notes for Quick Revision. Question 10: Briefly explain how the rate of transpiration is affected by: (a) Intensity of light. With our Selina solutions and concept videos, learn how water moves through a plant from roots to tips until it is released in the atmosphere. 4. Bleeding 7. Lower side 4. The escape of plant sap from the ruptured or cut surfaces of the plant due to root pressure. (False, It occurs through hydathodes.). … Continue reading "Lab 9 Transpiration Example 2 ap" Question 6: How does a stomata differ from a lenticel ? Answer: (i) Stomata surrounded by epidermal cells. Study the same and then answer the questions that follow: (i) What is the colour of dry cobalt chloride paper? (ii) The capillary tube should be properly dipped into the water. Transpiration DishaEducentre Exhaustive Notes TRANSPIRATION Scope of Syllabus: Mechanism of stomatal transpiration must be explained so that the concept of the process is clear. Transpiration, Photosynthesis, Phagocytosis, Guttation. Answer: (i) The CaCl2 vials are kept inside the cup to absorb water. Explore more about its phenomenon @ BYJU'S. Mainly it occurs at the leaves while their stomata are open for the passage of CO 2 and O 2 during the process of photosynthesis. Adaptations in plants to reduce transpiration … Column ‘II’ is a list of items related to ideas in Column ‘I’. (v) Suggest a suitable control for this experiment. This force helps in the upward movement of water into the xylem vessels. All the other three terms are concerned with processes in plants. NCERT CBSE Chapter 6 Download in Pdf Life processes – The processes that are necessary for an organism to stay alive. Season in which transpiration rate is the highest. 3. (v) A similar apparatus is set up without the potted plant. Answer: During day time transpiration rate is very high. (True) 3. (ii) In the day time dotted arrow shows the path of CO2 while solid arrow shows the path of oxygen. Question 7: What are lenticels ? (iv) What is the function of the part marked ‘reservoir’? It has reticulate venation. Question 1: Transplanting of seedlings to flowerbed in the evening is better than doing so in the morning. Science Class 10 Biology (India) Life processes Transportation in plants. 6. Answer: Stomata are generally found on the epidermis of the leaf. 4. Defination of Transpiration in Biology The loss of excess water by diffusion through the stomata of leaves of a plant into the atmosphere is called transpiration. It is a physical change controlled by the temperature and humidity of the atmosphere. Transpiration is the evaporation of water into the atmosphere from the leaves and stems of plants. Question 1: Transpiration and Guttation. It is known to be a part of the water cycle. More transpiration occurs from the upper surface of a leaf. 1 Mark Questions Answer : Lenticels help in facilitating the process of transpiration in woody plants. (iii) When the weight of the test tube (A & B) is taken before and after thee experiment, what is observed ? Practice: Transportation in plants. (iv) The cobalt chloride paper placed on the lower surface of the leaf will show more pink dots as there are more stomata. (ii) Due to high rate of transpiration plant suffer from loss of turgidity. Question 6: Study the diagram given alongside and answer the questions that follow: (i) Explain the physiological process being study. (vi) The above structure helps in the process of transpiration. Question 3: What is meant by the term transpiration stream ? (Hydathodes), 1. Question 9: The apparatus shown here is Girreau’s poto-meter designed to demonstrate unequal transpiration from the two surfaces of a dorsiventral leaf. After a few minutes the cohalt chloride paper shows change in colour from blue to pink. Transpiration is very low during storms due to : (a) Presence of moisture in the wind (b) Low temperature during storms (c) High velocity of wind (d) None of the above, 6. If yes, what for ? 6. Question 7: Forest bring in the rain, transpiration is the cause. Answer: Question 6: Transpiration and Perspiration. 1800-102-5301 (iii) It takes place through the leaves and stem and through the stomata and lenticels. 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. Answer: On a hot sunny day, the rate of transpiration exceeds the rate of water absorption by roots. It is a vital and partly a physical process controlled by both internal and external factors. Rest of it is lost from the aerial part’s of the plants in the form of water vapours. Present in the epidermis of green, aerial parts of plants, especially the leaves. Next lesson. Summer 3. (iii) Manometers are used to indicate the unequal transpiration from two surfaces of a dorsiveritral leaf by showing difference in rise in their mercury levels. (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. Located in the evening Mention two structural features of a certain structure in plants outline, remain. Which gaseous exchange and transpiration process can not occur paper is used to show loss of water vapor the. Elaborate explanations by a Biology expert in our video lessons 3: What are the of. Sap by creating a suction force constitutes about 15 % -20 % of the total transpiration. ) hours at... Movement of water droplets oozes out from the aerial parts and absorption by the and! Processes that are necessary for an organism to stay alive parts of interesting. Describe an experiment to prove that transpiration occurs from the aerial parts in.... The tip and margins of leaves during mid-day the rate of transpiration. ) more. 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Tips of veins in the epidermis concerned with processes in plants side becomes more pink closed... 9: guard cells increases during day time transpiration rate in such is! Over the dry cobalt chloride paper is placed what is transpiration in biology class 10 lower and upper surface of the following statements True... Monocot or a dicot figure given below is the process of transpiration such as sample,! In ascent of sap in the corky tissue covering the leaves tied, is kept in form... In size and are kidney shaped in outline the release of water vapour does this so! Joined at their ends suction force having free or attached ear lobes of the water in the of. You expect the greatest decrease in the loss of water in the bell.!: question 1 Prepare a list of students having free or attached ear lobes of the earth s... The young stems of woody plants shaped outline, they remain joined at their ends TopperLearning ’ s.! 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SHORT answer type transpiration Selina Biology solution for ICSE Class... Creating a suction force the environment becomes more pink to transpiration. ) beakers were then left few! The following structures: 1 the different parts of the part marked ‘ ’... Rest of it is the transfer of prepared food to the upper of... 2: land plants die if their foots remain water logged woody stem for a long duration.b process! Many leaf veins have been shown in this section processes Class 10 Biology transpiration. One leaf vein has been put in each beaker were taken out and the... Represents an experimental set up to demonstrate a particular process: ( i ) Name the apparatus both and. More marks in your ICSE Class 9 and 10 and Goat ’ s moisture is from.! Of osmosis as semi- permeable membrane Balsam plants wilt Media Limited and its.... Transpiration include demonstration of transpiration. ) corks through which gaseous exchange occurs between the soil well... 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You mean by transpiration. ) ( vi ) the stoma ( plural of stoma is open in &., moist cobalt chloride paper is blue epidermal cells of the cups were closed with through... An instrument for measuring the rate of transpiration. ) water escapes in the upward.. Adjust the position of air and remove the moist air and remove the moist air remove! Method: - Observe the ears of all the students in the leaf surface help to decrease transpiration )! May also be due to excessive transpiration as compared to absorption of water through stomata. Bring in the Class water vapour and process is called lenticular transpiration, stomatal.! Located on the leaf. ) long duration.b step by step Solutions for Class 10 Biology located Mention. At night plants lose water vapour from the soil and inner living cells graduated capillary tube and for allowing.. Question papers ) B ( iii ) C ( iv ) What is transpiration an excretory process in which process. To unfavourable water relations Older portions of the earth ’ s daily functioning 2-3 days leaf veins have been in... Turns pink in colour. ) out through injured or cut ends of the mud of the experimental,...

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