Granum 2. Stroma 14. 3. Answer: (i) Photosynthesis. The leaf anatomy is best suited for collecting the raw materials. (i) What aspect of photosynthesis was being investigated ? Photosynthesis is a process by which phototrophs convert light energy into chemical energy, which is later used to fuel cellular activities. (ii) Stroma lamellae. Name the tissue that transports manufactured starch from the leaves to all parts of the plant. (ii) Name the membrane that connects thylakoid of one granum With the other granum. 11. Free Energy 4. The photosynthesis equation is as follows: 6CO2 + 6H20 + (energy) → C6H12O6 + 6O2 Carbon dioxide + water + energy from light produces glucose and oxygen. It is green flattened sac like structure. They are called so, because they provide the energy requirement for CO2 assimilation during dark reaction of photosynthesis. (vi) The region of the leaf that was under the black strip turns yellowish-brown showing that no starch was made, while the rest of the leaf turns bluish-black showing the starch was made in the presence of light. Question 15: Why is it not possible to demonstrate respiration in a green plant kept in the sunlight ? The site of light reaction in the cell of a leaf. (iii) Name an alternative chemical that can be used instead of KOH. (iv) Leaf 1, no change in colour with starch list. A cell that lacks chioroplast does not: (a) Evolve carbon dioxide (b) Liberate oxygen (c) Require water (d) Utilize carbohydrates, 5. (False, It takes place 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. Fill in the blanks: Question 1. This is possible only when you have the best CBSE Class 10 Science study material and a smart preparation plan. Photosynthesis, derived from the Greek words photo, meaning "light," and synthesis "putting together," is a process used by plants and some bacteria to harness the energy from sunlight to convert water and carbon dioxide to produce sugar (glucose) and oxygen. 3. (ii) What is the function of sodium hydroxide solution in the flask? Question 6: Why green leaves are thin and broad ? The potted plant was then placed in sunlight for a few hours. It gets water from the stem. After the starch test, leaf Y would look like. (iv) Give an overall balanced chemical equation to represent the process named in (i) above. The light-dependent reaction uses energy captured from sunlight by the chloropasts in plant leaves to produce a supply of electrons for the light-independent reactions. The purification of the atmosphere whereby the volume of CO2 remains fairly constant due to the photosynthetic activity of green plants. A dark reaction is a Thermochemical reaction. She placed the potted plant in the sunlight for a few hours, and then tested the leaf which was covered with black paper for starch. Iodine, Question: 1. (i) What aspect of photosynthesis was being tested ? 11. 2. (iv) Give a well balanced equation to represent the process. (False, It remains stored in it for 24 to 48 hours) 17. Answer: 1. Photosynthesis can also occur n artifidal light such as that of a 100 watt electric lamp. 7. If a green plant is kept in bright light, it tends to use up all the CO2 produced during respiration, for photosynthesis. 4OH ——> 2H2O + O2, Mention, if the following statements are True or False. The process by which plants produce their food. Photosynthesis is responsible for the presence of oxygen in our atmosphere. Answer: 1. Photosynthesis is a process by which plants or organisms like algae and bacteria harness the solar energy in presence of carbon dioxide (CO2) and water (H2O) and convert it into chemical energy. The numeral ‘1’ represents a certain condition inside the flask and the numeral ‘2’ represents a chemical responsible for this condition. What does ATP abbreviated for ? Out of nine types of chlorophyll, chlorophyll ‘a’ and ‘b’ are most abundant. 6. Candidates who are ambitious to qualify the Class 10 with good score can check this article for Notes. Water 5. A series of chemical reactions occur in quick succession initiated by light, therefore the phase is called photochemical phase. 7. Question 27: Write an experiment to demonstrate that CO2 is necessary for photosynthesis. Stroma. 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. We provide step by step Solutions for ICSE Biology Class 10 Solutions Pdf. 7. (True) 10. 5. To register Biology Tuitions on Vedantu.com to clear your doubts. KSEEB Class 10 Science Chemical Reactions and Equations Additional Questions and Answers. Answer: (i) Chloroplast. Answer: (i) Chlorophyll is necessary for photosynthesis. So, photosynthesis occurs in the presence of Carbon dioxide, Water, Sunlight and Chlorophyll(catalyst- which helps in the reaction to occur but itself do not includes in it). Use this information to answer questions that follow : (i) Name the process occurring in the water weed that has resulted in evolution of these bubbles. Thylakoids. (Photon) 3. 10. Question 3: Chlorophyll is necessary for photosynthesis. Question 17: Explain, why respiration is said to be a reversed process of photosynthesis ? (ii) Identify the special condition inside the flask. Question 24: A healthy croton plant bearing variegated leaves was kept in a dark cupboard to destarch it after which it was placed in sunlight for a few hours. Light in which maximum rate of photosynthesis takes place. (Root) 2. Answer: ATP and NADPH2 are called assimilatory power. Question 6: The figure given below is for performing an experiment on photosynthesis. Question 2: Photosynthesis is considered as a process supporting all life on earth. Now keep the potted plant in light. In words, the equation may be stated as: Six carbon dioxide molecules and six water molecules react to produce one glucose molecule and six oxygen molecules. A series of chemical reactions occur is quick succession initiated by light, therefore the phase is called photochemical phase. Photosynthetic Membrane: A bilayer of lipid molecules in which are embedded proteins that transform light’energy into chemical free energy. What does NADP stand for ? 8. 5.Photosystem Organization 6.Equation of photosynthesis 2. Using the above information, answer the following questions : (i) State the aim of the above experiment. 11. equation of photosynthesis class 10 (v). (iv) Define the phenomenon. So, during day time photosynthesis and stomatal transpiration occurs simultaneously. Related articles. Answer: This process produces food and releases oxygen, both of which are necessary to maintain life on earth. (d) Decreases because water freezes. Question 13: Oxygen given out during photosynthesis comes from water. If false rewrite the wrong statement in its correct form: 1. The principal site in a green leaf for photosynthesis. Heterotrophs 7. 12. NADP 10. In most plants, water is supplied from the roots, with the leaves collecting carbon dioxide via the stomata and sunlight captured by the chloroplasts in the leaves. (iii) Photosynthesis. Question 5: The figure below represents an experiment set up to study a physiological process in plants: (i) Name the physiological process being studied. Red 7. Leave it in the sunlight. (d) The first form of food substance produced during photosynthesis. iii. The light-independent reactions use energy from the supply of electrons to reduce carbon dioxide to produce glucose. (ii) It occurs in the grana of chloroplast. (iv) Leaf A will be yellowish-white. 14. (iii) What do you conclude from this experiment? The physiological process being studied is Photosynthesisii. PhotoLysis is the reaction which means the breaking up of water molecules. (e) Decreases because respiration decreases. Which process is the ultimate source of energy for all living organisms ? Chlorophyll 3. (b) I will select destarched plant so I can demonstrate the synthesis of starch through iodine test. Question 21: On a bright sunny day water weeds growing in an aquarium were actively giving off bubbles of.gas. (Also known as the thylakoid membrane.) In addition to glucose, this reaction produces oxygen that is released by the plants into the atmosphere. Name only one plant, you are familiar with which has no chlorophyll. Name the structure where photophosphorylation takes place. - [Instructor] Photosynthesis is pretty awesome. a) Light: Visible spectrum of the sunlight ranges from 380 to 750 nanometres in wavelength. Answer: The leaves of green plants are specially developed for the purpose of synthesizing food. (iii) (1) To kill the cells. (i) What is the object of the experiment ? Answer: Question 1: The figure below represents the vertical section of a leaf: (i) Name the parts 1 to 5. 13. The resulting glucose is converted to adenosine triphosphate (ATP) through cellular respiration, as explained on the Estrella Mountain Community College photosynthesis web page, to provide energy. Answer: Respiration is a catabolic process while photosynthesis is an anabolic process. Explain that Plants Are Alive, Just Like Us. The potted plant was kept in the dark for 24 hours. The main difference between chlorophyll ‘a’ and ‘b’ is: (a) Chlorophyll ‘a’ is a linear chain compound and ‘b’ is branched chain (b) Chlorophyll ‘a’ has no Mg ion in centre of molecule (c) In chlorophyll ‘a’ there is — CH3 group whereas in ‘b’ it is — CHO group (d) All of the above. Answer: Question 4: Autotrophs and Heterotrophs. It takes place in chlorophyll containing thylakoids of chloroplast. Chlorophyll, Chlorophyll b, n-carotene, Photon. (2) To destroy the chlorophyll. 2. If so, state the same. The empirical equation representing the total process of photosynthesis for oxygen evolving organisms was then understood as: CO H O CH O O Light 2 2+ → +[ ]2 2 where [CH 2 O] represented a carbohydrate (e.g., glucose, a six-carbon 6. Answer: Answer has not given due to out of present syllabus. 5. Hence, the ability to collect raw materials and to carry on chemical reactions to synthesize food, it is called as the food factory of the plant. Answer: (i) 1. In plant cells, carbohydrates are stored in which form (glucose, starch, glycogen). Mushroom 10. Based in Manchester, England, John Newton has been writing since 2006. Boil the leaf in alcohol and wash in water. APlusTopper.com provides ICSE Solutions for Class 10 Biology Chapter 5 Photosynthesis for ICSE Board Examinations. Plastoquinone: A small molecule involved in electron and proton transfer in photosynthesis. (i) It fakes place in the presence of light. And. Stomata – through which exchange of gases takes place. Pour iodine solution on it. 160 billion metric tons of carbohydrate; Q15: Deficiency of metal 'X' causes lack of formation of chlorophyll in a plant. The raw materials for photosynthesis include water and CO2. Answer: The tissues and cells which contain chloroplasts are mainly the palisade parenchyma and spongy mesophyll cells of a green leaf. 6. Question 23: Using the destarched plant describe step by step how would you proceed to prove that in the absence of light the leaf cannot manufacture starch ? Answer: (i) A large surface area to absorb water. (2) I will select destarched plant so I Can demonstrate the synthesis of starch through iodine test. This energy is used in splitting the water molecules (photolysis) as below :-. Concise Biology Part II - Selina Solutions for Class 10 Biology ICSE, 6 Photosynthesis. Answer: The chlorophyll traps solar energy and converts it into chemical energy. H2 ———> H+ + OH–. Then in the early hours of the morning she covered one of the leaves with black paper in the centre only. All the solutions of Photosynthesis - Biology explained in detail by experts to help students prepare for their ICSE exams. Upper Epidermis 3. Plastoquinone 6. (iii) What is the aim of the experiment? (Photo = Light, lysis = Breaking). Answer: The basic requirements of photosynthesis are: Question 2: (i) Where are the chlorophyll pigments present in a cell. 9. (a) Oxygen (b) Light (c) Carbon dioxide (d) Chlorophyll, 4. Leaf 2, will turn blue black at the end of starch test. NADPH 5. (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. (iii) Light is necessary for photosynthesis. A plant that does not perform photosynthesis is Fungus. (iii) There are numerous stomata to allow rapid exchange of gases. Write the functional activity of the following structures: 1. Chemical energy 5. During election transfer NADP get reduced and (rom NADP + H (NADPH2). Insert one of its leaves in a conical flask, which contains potassium hydroxide. (iv) In what manner do the leaves 1 and 2 differ at the end of the starch test ? The dark reaction of Photosynthesis is light independent. It was then set up as shown in the diagram and exposed to light for about 12 hours. The hydroxyl ions combine to form hydrogen peroxide 2OH —> H2O2 which decompose to give molecular oxygen, i.e., 2H2O2 ——> 2H2O + O2 (iv). (True) 8. (ii) Take a potted plant and keep it for 2-3 days in dark to destarch its leaves. Question 1: What are the basic requirements of photosynthesis ? Given below is the overall chemical equation of photosynthesis which is incomplete in certain respects. (True) 16. Question 19: What is the law of limiting factor ? It occurs in following steps : (a) The chlorophyll on exposure to light energy becomes activated by absorbing photons. (Chlorophyll), 1. The chloroplasts are the actual sites of photosynthetic reactions-light and dark reactions which result in the formation of glucose. Stomata (ii) One vein has been shown. Answer: 1. This article is helpful for Class 10 Science . (ii) Label the guidelines 1-3. (iii) Leaf is boiled in water to kill the cells and boiled in alcohol to remove chlorophyll. (False, Photosynthesis occurs in all green plants.) (iv) Light supplies eiergy in the form of photons to split water during tight reaction. A light reaction is a Photochemical reaction. Question: 1. Class 10 Science Chemical Reactions and Equations – Get here the Notes for Class 10 Science Chemical Reactions and Equations. (ii) Oxygen. (ii) How many veins have been shown. Answer: (i) (f) (ii) (d) (iii) (e) (iv) (b) (v) (a) (vi) (c) (vii) (f) (viii) (a) (ix) (b) (x) (d) (xi) (e), ICSE Previous Year Question Papers Class 10, ICSE Solutions for Class 10 Biology – Photosynthesis, Concise Mathematics Class 10 ICSE Solutions, Concise Chemistry Class 10 ICSE Solutions, Concise Mathematics Class 9 ICSE Solutions, Violence in Video Games Essay | Essay on Violence in Video Games for Students and Children in English, Plus One Hindi Previous Year Question Paper March 2019, Schizophrenia Essay | Essay on Schizophrenia for Students and Children in English, Macbeth Ambition Essay | Essay on Macbeth Ambition for Students and Children in English, Compare and Contrast Hinduism and Buddhism Essay | Essay on Compare and Contrast Hinduism and Buddhism for Students and Children, Bill Clinton Impeachment Essay | Essay on Bill Clinton Impeachment for Students and Children in English, Marriage Essay | Essay on Marriage for Students and Children in English, Essay EBooks | EBooks Essay for Students and Children in English, Cultural Diversity Essay | Essay on Cultural Diversity for Students and Children in English, Letter from Birmingham Jail Essay | Essay on Letter from Birmingham Jail for Students and Children, Declaration of Independence Essay | Essay on Declaration of Independence for Students and Children in English. 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