Answer: What are the Types of Transpiration Process in Plants? Answer: Madhav University, Pindwara, District - Sirohi, Rajasthan has been established by Act No. The rate of transpiration also depends on internal factors like the morphological characteristics of a plant. (b) projection of the epidermal cell 19. Question 2. Halophytes may show cell pressure very much higher than atmospheric pressure. Tropical plants with lots of water will transpire during the day to cool themselves. Question 4. (a) SA node Will the ascent of sap be possible without the cohesion and adhesion of the water molecules? loss of huge amount of water absorbed by plants and leads to wilting and injury Our mission is to liberate knowledge. Transpiration is the loss of water from the plant by aerial parts of the plant in the form of water vapour whereas guttation is the loss of water from margins of leaves in the form of water droplets. (iii) When the rate of transpiration is high in plants growing in soil deficient in water, an internal water deficit develops in plants which may affect metabolic process. If yes, how? (c) osmosis When the potato plant carries out photosynthesis using the CO2 which is radiolabelled, it forms Oxygen and glucose (C6H12O6) where the carbon in the glucose molecule has the radiolabelled carbon present. b. If it is sprayed on leaves, transpirational loss of water will stop and mercury levels will remain stable. Answer: From where does this hormone gets released in leaves? Plants show temporary and permanent wilting. B. Explain. (a) SA node. Explain the conduction of the heartbeat. 3. Answer: Answer: (d) all of the above (c) Starch Question 1. The circulation system consists of the circulating fluids, the blood and lymph, the heart and the blood vessels namely arteries, veins and capillaries. The form of sugar transported through phloem is. (b) xylem 10. (a) If both A and R are true and R is correct explanation of A. C. (ii) added to make the plant grow faster, but after some time the plant dies. 15. The blood circulates twice, through the heart in one complete cycle, in the circulation of blood in man. The process is imbibition’. Elements most readily mobilised are phosphorus, sulphur, nitrogen and potassium. (b) O2 b) Imbibition is a special type of diffusion when water is absorbed by dead or living cells. structure of leaves which is basically meant for gaseous exchange during Question 5. What is Coronary circulation? E. (ii). Answer: The movement of substances in the phloem can be in any direction. (d) Transpiration, Question 7. Natural membranes like the cell membrane are selectively permeable, which means that it allows only certain molecules to get in or go out of the cell. In as much as transpiring loses water and water is scarce, it is a necessary evil. What is the Ascent of Sap? 2. (a) Purkinje system G. (v) Question 11. 5. PreserveArticles.com: Preserving Your Articles for Eternity. a) These types of guard cells are found in dicots because as we know the shape is bean-shaped. It is mildly acidic. 20. State whether True or False. What are ‘aquaporins’? Answer: What properties of water make it useful for all biological processes on the earth? (a) Glucose a necessary evil phrase. Answer (1 of 4): The loss of water in the form of vapors from aerial parts of the plant is called transpiration. Functions of Lymph: Question 2. After that when it was placed in distilled water, the cell regains its turgidity as it absorbs water and deplasmolysis occurs. It is an useful diagnostic tool to identify and localize health problems and diagnose disease. Pace maker of heart is ……….. The anatomical structure of the leaf is necessary for photosynthesis and respiration. (d) all of the above. (iv) Many xerophytes plants undergo structural modifications and adaptations to check transpiration. Answer: The human heart is myogenic. Uniport: When a single substance moves in a single direction across a cell membrane, it is called uniport. 1. For eg: Leaf area, the thickness of cuticle. Which of the following process requires energy? Transpiration does not remove excess of water. Name the heart valve associated with the major arteries leaving the ventricles. Question 2. Soil water → Root hair → Epidermis → Cortex → Endodermis → Pericycle → Xylem → Stem and leaf. Transpiration is a necessary evil in plants. The blood pressure is high in the arteries gradually drop in the arterioles and capillaries and become very low in the veins. (a) 80 mm Hg All arteries carry oxygenated blood except: The valves will prevent the back flow of blood. Explain. (b) veins Question 1. It takes place through a specialized cells called hydathodes. (d) Fructose Answer: Answer: Answer: The granulocytes include neutrophils, eosinophils and basophils. (b) If both A and R are true but R is not the correct explanation of A. Person with ‘AB’ blood group are called Universal Recipient. This experiment can demonstrate which tissue is conducting water up the stem. Purkinje fibres mainly help in contraction of: Differentiate between Apoplast and Symplast pathways of water movement. False – Apoplastic movement does not involve crossing the cell membrane. b. Identify a type of molecular movement which is highly selective and requires special membrane proteins, but does not require energy. Minerals absorbed by the roots travel up the xylem. Short essay on Transpiration a necessary evil. How does salting tennis lawns help in the killing of weeds without affecting the grass? Viscosity is the resistance of a fluid to flowing water. This movement dependent on the gradient. Why are natural membranes selectively permeable. 6. Students can download 10th Science Chapter 14 Transportation in Plants and Circulation in Animals Questions and Answers, Notes, Samacheer Kalvi 10th Science Guide Pdf helps you to revise the complete Tamilnadu State Board New Syllabus, helps students complete homework assignments and to score high marks in board exams. a. (d) A (d) both b and c. (a) transpiration is increased b. Plants photosynthesise and therefore have a large SA to collect light, and they have stomata to allow carbon dioxide to diffuse in ('necessary'). Give the location of the Casparian strip and explain its role in the water movement. Reason: RBC do not have cell organelles and nucleus. The upward movement of water, and minerals from roots to different plant parts is called ascent of sap. When the turgidity increases within the guard cells the stomata open. The closure of the mitral and tricuspid valves at the start of the ventricular systole produces the first sound ‘LUBB’. Question 6. Question 3. What does a necessary evil expression mean? Can this experiment demonstrate which tissue is conducting water up the stem? (d) all blood group. The rate of transpiration is more due to the higher temperature than the absorption of water so this will lead to wilting or losing the plant’s turgidity. Origin of heart beat and its conduction is represented by: Question 8. Match the Column I with Column II. 13. xylem Symplast : This is the living passage. The heart is four chambered with two auricles and two ventricles. Which blood group is called as ‘Universal Donor’ and ‘Universal Recipient’. When there is a huge amount of transpiration that takes place, it leads to a huge amount of water loss thus causing wilting of the plant. If creates a transpiration pull to absorb more and more water from soil through roots. When the guard cells lose water it becomes flaccid and the stomata closes. Water moves up against gravity and even for a tree of 20m height, the tip, receives water within two hours. They need to transport food, water and animals around the body of the plant to ensure the circulation of nutrients throughout the plant. Our mission is to liberate knowledge. (c) Purkinje fibres → Purkinje node → AV fibres → Bundle of His These cells form 5-6% of the total leucocytes. (c) Basophils, Monocytes, Lymphocytes Sphygmomanometer is a clinical instruments used to measure blood pressure when a person is in a relaxed and resting condition. What is the shape of RBC in human blood? Transpiration prevents it by removing the extra water. They release chemicals during the process of inflammation. Comment on the upward movement of water given the intermolecular hydrogen bonding in water. Minerals cannot be passively absorbed by the roots. Answer: When a plant undergoes senescence, the nutrients may be, 8. SA node acts as the ‘pacemaker’ of the heart because it is capable of initiating impulse which can stimulate the heart muscles to contract. c) Surface tension is the cohesion of the water molecules on the fluid surface of occupying the least volume. How do plants regulate the type and quantity of solutes that reach xylem? Answer: 2. Your email address will not be published. This is responsible for drawing water into the cells from the neighbouring xylem. Water potential of pure water at standard temperature is equal to, 9. Absorption of water from the soil by dry seeds increases the _____________, thus helping seedlings to come out of the soil, 6. 1. iii)Surface tension is the property of the surface of a liquid to resist an external force applied owing to the cohesive nature of the molecules of the liquid. Yes, plants need to adjust the type and quantity of solutes that reach the xylem. Answer: So when a solute is dissolved in water, the water potential of pure water decreases or starts assuming a negative value. 21. Oxygenated blood is carried by ……….. (b) diffusion The leaves absorb the radiant energy. (b) pale yellow When transpiration exceeds than water absorption by roots, the plant dehydrates. 5. Reason: Osmosis is the active movement of water. 6. Coronary arteries. The colour of lymph is: Why is transpiration called a necessary evil? The other name for Red blood corpuscles (RBC) is called ______. Semilunar valve is present at the base of …………. Answer: Question 8. a) Cells shrink in a hypertonic solution and swell in hypotonic solutions. (d) 90 mm Hg, Question 16. Question 5. The type of diffusion in which a solid absorbs water and gets swelled up is Imbibition. Before publishing your Article on this site, please read the following pages: 1. Both processes can happen together because the diffusion co-efficient of water and CO2 is different. Keep some freshly cut flowers in a solution of food colour. It is...BUT, A NECESSARY EVIL. The vascular bundle, phloem is responsible for conducting the food from the source to the sink. c. Which element plays an important role in the opening and closing of stomata? Diffusion occurs through phospholipid layer and facilitated diffusion occurs through membrane proteins, 23. Which of these shows a higher water content (i) or (ii)? (b) Epicardium 2. pulmonary vein So minerals in the plants are not lost, when the leaf falls. Explain. It is due to imbibition. c. Will the mercury level fluctuate (go up/down) if phenylmercuric acetate is sprayed on leaves? Cells shrink in hypotonic solutions and swell in hypertonic solutions. a) All the essential substances in living organisms are solutes dissolved in water and transported from one place to another. Guard cells are responsible for opening and closing of stomata. The loss of water vapour from aerial parts of living plants is known as transpiration (Meyer, 1953) Transpiration is giving off of water vapour from the surface of a plant. 5. (d) all of these Mineral salts remain dissolved in the soil water and are absorbed by the roots. Older dying leaves export much of their mineral content to younger leaves.
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