It is green flattened sac like structure. Which would do maximum harm to a tree? Question 8: Select the correct answer out of the available choices given under each question. 10. (iii) What do you conclude from this experiment? (iii) The plant is kept in the dark before the experiment to destarch the leaves. 1% of absorbed water is utilized and the remaining water is released during photosynthesis. Answer: (i) To demonstrate that sunlight is necessary for photosynthesis. Question 1: All life on earth Would come to an end if there were no green plants. (i) What is the object of the experiment ? (ii) Is green light most or least useful in photosynthesis and why? (ii) It is the process in which green plants manufacture food from carbon-dioxide and water, in presence of sunlight. (iii) KOH or NaOH pellets. 7. 230-250 molecules of chlorophyll make one quantasome. 4. Leaves are rich in plastids. (Carbon-di-oxide) 4. (False, It takes place in the presence of sunlight.) One of the product of Photolysis of water is oxygen. (iii) There are numerous stomata to allow rapid exchange of gases. List the three events that occur during the process of photosynthesis. Water along with minerals is absorbed by roots and is carried to the sites of photosynthesis through xylem tissue. (False, Photosynthesis results in gain of dry weight of the plant.) (i) What aspect of photosynthesis was being investigated ? Q4: Mention the conditions for photosynthesis. Question 14: How is the rate of photosynthesis affected when a green plant gets green light ? ... explain the process of photosynthesis. After the starch test, leaf Y would look like. Question 1: What are the basic requirements of photosynthesis ? Generally, the rate of respiration is less than that of photosynthesis. Explain this statement. (ii) Now the potted plant is kept in light. Photosynthesis: The process by which green plants prepare food is called photosynthesis. Answer: (i) 1. Light screen experiment, Complete the following sentences with appropriate words : 1. Answer: 1. Answer: Question 1: The figure below represents the vertical section of a leaf: (i) Name the parts 1 to 5. Question 7: A well watered healthy potted plant with variegated leaves was kept in darkness for about 24 hours. Compensation point means the condition: (a) When the entire food manufactured in photosynthesis remains unutilised (b) When the pot is watered just to meet the full requirement of the plant (c) When rate of photosynthesis is equal to rate of respiration (d) Where there is neither photosynthesis nor respiration. 10. Life Processes Class 10 Important Questions Short Answer Type I. Mucus is secreted along with Hcl in the stomach . Answer: ATP and NADPH2 are called assimilatory power. Life Processes Class 10 Important Questions with Answers Science Chapter 6 Life Processes Class 10 Important Questions Very Short Answer Type. APlusTopper.com provides ICSE Solutions for Class 10 Biology Chapter 5 Photosynthesis for ICSE Board Examinations. According to this law when a process is conditioned to its rapidity by a number of separate factors, the rate of process is limited by the pace of the lowest factor, i.e., the factor which is present in minimum amount. Light Is Necessary For Photosynthesis Experiment Class 10 Introduction. RBSE Class 12 Biology Chapter 10 Essay Type Questions. (True) 8. NCERT Class 10 Science Solutions. 7. Get the correct answers from some of the best Science teachers through our chapter solutions. Question 20: Complete the following food chains by writing the names of appropriate organisms in the blanks: Answer: (i) Grasshopper, Hawk (ii) Grass, Insects, (iii) Rabbit, (iv) Com, Snake. ATP 2. Question 15: Why is it not possible to demonstrate respiration in a green plant kept in the sunlight ? (iii) (a) I will select white light because photosynthesis is maximum in white light while it is minimum in green light as green light is reflected by green plants. A plant is kept in a dark cupboard for about 48 hours before conducting any experiment on photosynthesis to: (a) Remove starch from the plant (b) Ensure that starch is not translocated from the leaves (c) Remove chlorophyll from the leaf of the plant (d) Remove starch from the experimental leaf, 8. Water 5. (iii) What is the chemical substance numbered ‘2’? Asked by vrs20664 16th February 2020 7:27 PM . Photosynthesis is important because it provides two main things: food; oxygen; Some of the glucose that plants produce during photosynthesis … During respiration CO2 is given out while during photosynthesis O2 is given out. (iv) Give an overall balanced chemical equation to represent the process named in (i) above. Explain how during light reaction of photosynthesis, ATP synthesis is a chemiosmotic phenomenon. (ii) List the events taking place in the photo-chemical phase of Photosynthesis. 3. The hydroxyl ions combine to form hydrogen peroxide 2OH —> H2O2 which decompose to give molecular oxygen, i.e., 2H2O2 ——> 2H2O + O2 (iv). It takes place in chlorophyll containing thylakoids of chloroplast. (ii) Of what gas do these bubbles consist ? 10. Answer: (i) In a dark room a leaf on the destarched plant is covered on either side with strips of black paper which is kept in place by paper clips or cellophane tape. Light in which maximum rate of photosynthesis takes place. (True). 13. Answer: 1. 11. This consists of 1 mark Questions, 3 Mark Numericals Questions, 5 Marks Numerical Questions and previous year questions from Chemical Reactions and … (iii) Name an alternative chemical that can be used instead of KOH. (v) The leaf is then washed in water and tested with iodine. Column ‘II’ is a list of items related to ideas in Column ‘I’. Photophosphorylation 11. Photosynthetic rate is higher in red and blue light. (iv) In what way will the three leaves (A, B and C) differ at the end of the experiment, when tested with iodine solution? (False, The unit of light absorbed by the chlorophyll during photosynthesis is the photon or quantum.) Photosynthesis: It is the process by which green plants manufacture food by using carbon dioxide and water in the presence of sunlight. Question 25: A candidate in order to study the importance of certain factors in photosynthesis took a potted plant and kept it in the dark for over 24 hours. (True) 18. Phosphorylation 9. Increased concentration of carbon dioxide content enhances the rate of photosynthesis. NADP (Nicotinamide Adenine dinucleotide phosphate): It is a coenzyme. Answer: Photochemical phase of photosynthesis is light dependent. 4. Stomata are the structures which help in the exchange of gases. equation of photosynthesis class 10 The part of the chloroplast where the dark reaction of photosynthesis takes place. CO2 is the life supporting gas produced due to photosynthesis. Chloroplast 4. • These reactions reduce the carbon dioxide into carbohydrates, making use of the ATP and NADPH 2 produced in the photochemical reactions. (i) Explain why the rate of photosynthesis in plants is low both at lower and higher temperatures. Essentiality of sunlight and chlorophyll are demonstrated using starch test. Describe the process of light reaction of photosynthesis. Now keep the potted plant in light. In plants what is the site of photosynthesis. One of the leaves was covered with black paper in the centre. Question: 1. Photosynthetic Membrane 8. Answer: The tissues and cells which contain chloroplasts are mainly the palisade parenchyma and spongy mesophyll cells of a green leaf. In photosynthesis radiant energy is converted into which from ? Question 19: What is the law of limiting factor ? (iv) Give a well balanced equation to represent the process. NADP is expanded as: (a) Nicotinamide, adenosine dinucleotide phosphate (b) Nicotinamide, adenine dinucleotide phosphate (c) Nicotinamide, adenine dinucleous phosphate (d) Nicotinamide, adenosine dinudeous phosphate, 7. Answer the following: (i) What is the aim of this experiment? 3. 3. You can download the Class 10 Biology ICSE Textbook Solutions with Free PDF download option. Then boiled in water for 2-3 weeks before it is the control as it sunlight... How many veins have been shown do these bubbles consist that light is necessary photosynthesis... Change in colour with starch list before the experiment ( Photo = light, therefore the phase is called phase. Tell from the sunlight which falls on the leaf in alcohol and wash in water and dioxide... 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