Revise important photosynthesis-based questions by watching our interactive exam decoded videos by Biology experts. Questions based on Procedural and Manipulative Skills Answer : The given statement is false. Аnswer: 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. b) glucose formed in photosynthesis soon gets converted into starch. Overview of photosynthesis. (c) Boil the destarched leaf in water only. (ii) treatment with iodine; (d) outside in the garden covered by glass case. Question 13 : State whether the following statement is true or false. Also, mention the process involved in each of these steps. A student performed the starch test on a leaf, some steps involved are shown below: Question 16 : Name the ground substance present in a chloroplast. d) Nicotinamide Adenosine Dinucleoulus Phosphate. Stoma and stroma. (c) Photosynthesis takes place only in the presence of sunlight (a) (iv), (iii), (ii), (i) Plants that manufacture their own food are called heterotrophs. (b) Destarching helps in removing the starch from the leaf. Photorespiration Photosynthesis is divided broadly into two main steps. We, at Vedantu, have analyzed th… Question 6: Answer : Location : Thylakoids are found in chloroplast. We Provide Step by Step Answer of Progress Check , MCQs, Very Short Answer Type, Short Answer Type, Long Answer Type Questions and Structured / Applications / Skill Type Questions of Exercise-6 Photosynthesis ICSE Class-10 Concise .Visit official Website CISCE for detail information about ICSE Board Class-10. Before carrying out the test for the presence of starch in a leaf-on exposure to sunlight, the leaf is put into alcohol contained in a beaker and boiled over a water bath. Аnswer: If the starch is already present in the plant, the experiment will not give the fair test. It is a process of formation of ATP from ADP and inorganic phosphate by the utilisation of energy released by electrons emitted during photolysis of water. 8. During photosynthesis in green plants, light energy is captured and used to convert water, carbon dioxide, and minerals into oxygen and energy-rich organic compounds. (c) III only Aug 13, 2018 - ICSE Solutions for Class 10 Biology – Photosynthesis ICSE SolutionsSelina ICSE Solutions APlusTopper.com provides ICSE Solutions for Class 10 Biology Chapter 5 Photosynthesis for ICSE Board Examinations. Photosynthesis is the process by which autotrophic plants make their own food.Co2, water, chlorophyll, and sunlight are four important requirements for this process. 2. Photosynthesis PPT FOR CLASS 9,10 and 11Th students 1. NCERT Class 10 Science Lab Manual – CO 2 is Released During Respiration. Question 9 : Give one point of difference between the following on the basis of what is given in the bracket? More Resources CBSE Class 10 Lab Manual Practical Skills: Kerala Syllabus 9th Standard Physics Solutions Guide, Kerala Syllabus 9th Standard Biology Solutions Guide, NCERT Class 10 Science Lab Manual Experiment 2, NCERT Class 10 Science Lab Manual Practical Based Questions, NCERT Class 10 Science Lab Manual Questions, NCERT Class 10 Science Lab Manual Multiple Choice Questions (MCQs), NCERT Class 1o Science Lab Manual Scoring Key With Explanation, CBSE Class 10 Science Light is Necessary for Photosynthesis Practical Skills, Light is Necessary for Photosynthesis Practicals, NCERT Solutions for Class 7 Maths Chapter 6 The Triangle and its Properties Ex 6.5, NCERT Solutions for Class 7 Maths Chapter 6 The Triangle and its Properties Ex 6.4, NCERT Solutions for Class 7 Maths Chapter 6 The Triangle and its Properties Ex 6.3, NCERT Solutions for Class 7 Maths Chapter 6 The Triangle and its Properties Ex 6.2, NCERT Solutions for Class 7 Maths Chapter 5 Lines and Angles Ex 5.2, NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations Ex 4.4, NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations Ex 4.3, NCERT Solutions for Class 7 Maths Chapter 4 Simple Equations Ex 4.2, NCERT Solutions for Class 7 Maths Chapter 3 Data Handling Ex 3.4, NCERT Solutions for Class 7 Maths Chapter 3 Data Handling Ex 3.3, NCERT Solutions for Class 7 Maths Chapter 3 Data Handling Ex 3.2, NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals Ex 2.7, NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals Ex 2.6, NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals Ex 2.5, NCERT Solutions for Class 7 Maths Chapter 2 Fractions and Decimals Ex 2.4. These are: Light Reaction of Photosynthesis (or) Light-dependent Reaction. The leaf was then tested with iodine after boiling it in a alcohol. There is a possibility of translocation of food from uncovered leaf to a covered part of leaf. (a) convert light energy into chemical energy Photosynthesis is the process by which autotrophic plants make their own food.Co2, water, chlorophyll, and sunlight are four important requirements for this process. (b) The covered part of leaf will not have starch and will not show colour change. A potted plant is kept in different coloured lights. In plants, photosynthesis typically occurs within the chloroplasts located in plant leaves. There are many instances when bright students miss golden opportunities because of lack of proper guidance and are not able to perform optimally despite deep interest and willingness to work hard. Answer : b) Nictotinamide Adenine Dinucleotide Phosphate. (Dark Reaction by Calvin Cycle) Q4: Mention the conditions for photosynthesis. MULTIPLE CHOICE TYPE Photosynthesis ICSE Class-10 Concise Selina Biology. Аnswer: Respiration is the biochemical process during which organic food, mainly glucose that is present in the cell, breaks down into simpler substances and liberates carbon dioxide and energy. (c) chlorophyll is necessary for photosynthesis Why do we keep the experimental plant in bright sunlight? Procedure I. (b) Uncovered parts of the leaf cannot synthesises starch. Question 11: In a plant if there are no leaves for a short period of time, i.e.,-Autumn, how do such plants survive? Pluck two leaves from the plant, one that is covered and the other one that is uncovered. (d) black. The above experiment can be done by covering a portion of leaf with black paper. Exercise 1. Question 1: 10. The two types of photosystems convert light energy into ATP and NADPH. When leaves are boiled in alcohol, the alcohol solution becomes green and the leaves become colourless. Before testing the leaf for starch at the end of the experiment, “light is necessary for photosynthesis”, the experimental leaf, should be boiled in (a) This helps in de-starching the leaves. The first step in photosynthesis is Respiration Experiment Class 10 Introduction. a) Nicotinamide Adenosine Dinucleotide Phosphate, b) Nicotinamide Adenine Dinucleotide Phosphate. (a) C02 is necessary for photosynthesis Question 5: Understand that ENERGY can be transformed from one form to another. The removal of all the starch present in plant is called de-starching. A healthy potted plant, beaker, a pair of forceps, tripod stand, wire gauze, bunsen burner, black paper, paper clips, iodine solution, alcohol, water bath etc. Answer : Sleeping under tree at night is not advisable because plants respire at night due to which the atmosphere surrounding the tree is rich in CO2 which is harmful to us. (b) True (c) False Question 2: (b) Boil the destarched leaf in alcohol. Light-dependent phase is also known as the Hill reaction or photochemical reaction. Related articles. ATP and NADPH to be used in dark reaction. PHOTOSYNTHESIS. 1 Mark Questions Answer : Photophosphorylation is the process of conversion of ADP into ATP during photosynthesis. Question 13: Photosynthesis: The process by which green plants prepare food is called photosynthesis. Аnswer: Available for CBSE, ICSE and State Board syllabus. (b) blue light (c) white light Answer : Chloroplasts are mainly found in the mesophyll cells located between the upper and lower epidermis of the leaves. To show experimentally that light is necessary for photosynthesis. Question 6 : State the main function of thylakoids. Answer : Grana is the site of light reaction in the cells of a green leaf of a plant. This process is called destarching. Dark reactions use the energy molecules that were generated during the light reactions. LIGHT REACTION (PHOTOCHEMICAL PHASE) Light reactions include light absorption, water splitting, oxygen release and formation of ATP & NADPH (high-energy chemical intermediates). Аnswer: Question 19 : Rewrite the completed explanation by inserting a key word in the space indicated by ‘^’. During photosynthesis plants prepare starch. The leaves were tested for starch, the leaf which showed no starch in it is Stroma is the part/region in the chloroplast (matrix), where dark reaction of the photosynthesis takes place. Question 18: What Are the Products of Photosynthesis? BASIC BUILDING CONCEPTS Photosynthesis (Greek word photos: light; synthesis-, putting together) is the process by which the green plants synthesise their own food (glucose) using carbon dioxide and water as raw materials in presence of sunlight and chlorophyll. Аnswer: Question 4: Which one of the following is true about the reaction taking place in photosynthesis process? Class 10 Science Chapter 1 Revision Notes PDF Download. (adsbygoogle = window.adsbygoogle || []).push({}); Question 1 : Name the process of conversion of ADP into ATP during photosynthesis. (c) To avoid the loss of water during day times, the stomata will not open. Saturday, July 15, 2017. Two main phases are involved in the mechanism of photosynthesis:light dependent phase and light independent phase. Dark reactions use the energy molecules that were generated during the light reactions. (d) Green plants can prepare starch by  photosynthesis. Photorespiration Photosynthesis is divided broadly into two main steps. Equation 6 CO 2 + 6 H 2 O → C 6 H 12 O 6 + 6 O 2 Light Is Necessary For Photosynthesis Experiment Class 10 Introduction. After destarching, we keep the plant in the bright sunlight so that it undergoes photosynthesis to produce starch. Light reactions need light to produce organic energy molecules (ATP and NADPH).They are initiated by colored pigments, mainly green colored chlorophylls. Question 8 : Name the part of the chloroplast where the light reaction of photosynthesis takes place. Dark reaction : Dark reaction occurs in the stroma of the chloroplast. (c) II, IV, III, I Question 4: Animals owe their existence to chlorophyll. Take a healthy potted plant and keep it in a dark room for 48 hours so that all the starch gets used up. (Light Reaction) Reduction of carbon dioxide to carbohydrates. Answer : i) Presence of more stomata to allow rapid exchange of gases like CO2 and O2. Question 17: At the end of the experiment, which one of the leaf parts labelled I, II and III will become blue-black when dipped in iodine solution? To make food, plants need CO. Plants can prepare their food in blue light. (c) Covering the dorsal side of leaf will not deprive it from light. Question 2: (d) yellow light. (i) de-starching the plant; Question 4: c) Nicotinamide Adenine Dinucleolus Phosphate. Аnswer: Glucose is further converted into starch. (b) Alcohol helps in dissolving the chlorophyll without affecting the other cells. (a) A NCERT Solutions for Class 10 Science Chapter 1 Chemical Reactions and Equations includes all the important topics with detailed explanation that aims to help students to understand the concepts better. If false, write the correct form of the statement by changing the first or last word only. (definition). CBSE Class 10 Science Practical Skills – Light is Necessary for Photosynthesis. (d) the blue light stimulates the chloroplast maximum. (iv) keeping the set-up in sunlight; Questions based on Observational Skills Give reason. Selina ICSE Solutions for Class 10 Biology Chapter 6 Photosynthesis: Provider of Food for All. When leaf is boiled with ethanol and treated with iodine solution, its colour changes into: Class 10 Science Chemical Reactions and Equations – Get here the Notes for Class 10 Science Chemical Reactions and Equations. Answer : Light reaction : Light reaction occurs in the thylakoids/grana of the chloroplast. Get a free home demo of LearnNext . (b) B The alcohol is highly inflammable solution. Then do the same steps (4-11) as in procedure 1 on previous page. This is possible only when you have the best CBSE Class 10 Science study material and a smart preparation plan. Function : The function of thylakoid is to trap the light energy and to transform this energy into chemical energy forms, i.e. Are you one of those who finds science fascinating? (a) green light (a) water Аnswer: Question 11 : Why is sleeping under a tree at night not advisable? (c) photolysis of water Textbook Solutions. Revise the different types of nutrition in plants using TopperLearning’s ICSE Class 10 Biology concept videos, Selina solutions and other learning materials. Select a healthy leaf and clip a portion of it with dark colour paper using clips. (c) The entire leaf turned blue-black. (d) Water bath prevents the direct heating of alcohol which is highly inflammable and can catch fire. In this light reaction the water in leaves undergo photolysis. (b) dissolve chlorophyll In which part of the plant the photolysis reaction initiates? Question 14 : Explain the term photolysis in photosynthesis. Observe the colour of the leaves and solution. The steps, necessary for setting up the experiment “To demonstrate that light is necessary for photosynthesis” are not given here in proper sequence. During this reaction, carbon dioxide and water are converted into glucose by chlorophyll in the presence of light energy. The Electron Transport. Dip the leaves in boiling water for a few minutes. Question 25 : Give the exact location and one function of thylakoids. They makes food in the form of glucose. In chloroplast. Test , Class 10, Chemistry, CBSE- Chemical Reactions and Equations. (c) C A. Answer : Nicotinamide Adenine Dinucleotide Phosphate is the full form of NADP. (False, It remains stored in it for 24 to 48 hours) Question 6: It takes place in the thylakoid membranes of the chloroplast and includes photosynthetic pigments arranged into two light-harvesting complexes within photo system I … Photosynthesis is the process in plants and certain other organisms that uses the energy from the sun to convert carbon dioxide and water into glucose (a sugar) and oxygen. done clear. (d) The entire leaf remained white. Can this experiment be performed with a de-starched leaf detached from the plant? Optimum temperature for photosynthesis is about 25 o C. About 35 o C - 45 o C. 9. III. Question 1. and students can understand these concepts in a better way through ch 1 Science Class 10 … The dark reaction of Photosynthesis is light independent. (d) Boil the destarched leaf in a mixture of alcohol and water. Unlike many other endothermic reactions, photosynthesis does not absorb energy as heat. (a) the leaves absorb maximum blue light Call our LearnNext Expert on … (b) (i), (ii), (iii), (iv) The rate of photosynthesis depends on all three factors i.e.—light, temperature, availability of components, i.e.,— CO. To show experimentally that light is necessary for photosynthesis. Question 20: Аnswer: a) Light reactions: Light reactions are light dependent reactions. Solution A.1. Answer : Green leaves are thin and broad so as to provide the large surface area for trapping light and easy gaseous exchange for photosynthesis to occur. (b) photolysis of water Students who are preparing for their Class 10 exams must go through NCERT Solutions for Class 10 Science Chapter 1 Chemical Reactions and Equations. These reactions happen only in … Which range of wavelength (in nm) is called photosynthetically active radiation (PAR)? Question 1: Theory, Materials Required Photosynthesis takes place in leaf cells. Photolysis is the splitting of water molecules into hydrogen ions and hydroxyl ions present in the presence of ‘^’ and light. Leaf and clip a portion of leaf in chloroplast or last word only I ) presence more!, photosynthesis Equation, Raw materials for photosynthesis 1 st stable compound of Calvin cycle is photosynthesis. Glucose, is often used as a measure of photosynthesis: light reaction the. 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