Question 17 : Mention any three adaptations found in plants to favour the process of photosynthesis. Аnswer: Looking forward to pursuing higher education or a career in science? Brown. Carefully place this beaker in water bath and heat it till the alcohol begins to boil. Below, You will find a list of Biology MCQ Questions as per the latest prescribed syllabus. Calvin presented these reactions in cyclic manner & thus called as Calvin cycle. Dark reactions use the energy molecules that were generated during the light reactions. (d) hydrochloric acid. (a) deactivate the chloroplast (d) alcohol is flammable. It takes place in the thylakoid membranes of the chloroplast and includes photosynthetic pigments arranged into two light-harvesting complexes within photo system I … Question 5: 2. clear. Wash the alcohol from the leaves and then do the iodine test. Low CO 2 compensation point (0-10 m l. CO 2 l-1). In chloroplast. Answer : The function of thylakoid is to trap the light energy and to transform this energy into chemical energy forms, i.e. Answer : Location : Thylakoids are found in chloroplast. Respiration Experiment Class 10 Introduction. ATP and NADPH to be used in dark reaction. Photosynthesis is the process by which autotrophic plants make their own food.Co2, water, chlorophyll, and sunlight are four important requirements for this process. Why do we warm the leaves in alcohol? Question 2: Photosynthesis takes place in leaf cells. Photosynthesis consists of two stages, the light reactions, and the dark reactions. Question 10 : Give the biological/technical term for the process of conversion of several molecules of glucose to one molecule of starch. Photosynthesis is a process by which plants prepare food. (a) (iv), (iii), (ii), (i) Answer : Chloroplasts are mainly found in the mesophyll cells located between the upper and lower epidermis of the leaves. Jan 15, 2020 - CBSE Class 10 Science Notes Chapter 6 Life Processes Pdf free download is part of Class 10 Science Notes for Quick Revision. Аnswer: Question 6: Get a free home demo of LearnNext . The production of starch, and not glucose, is often used as a measure of photosynthesis in leaves because. When plants are kept in continuous darkness for about forty eight hours, all the starch present in them is used up for various biological processes and no new starch is formed due to absence of light. The best result of the experiment that light is necessary for photosynthesis would be yielded by using leaves from a plant kept for over twenty four hours: Light-dependent reactions (light reactions) 2. Аnswer: All the starch produced in a leaf remains stored in it for 2-3 weeks before it is used by other parts of plant. Now observe the colour of leaves and compare them. Answer : Stroma is the ground substance present in the chloroplast. Question 3 : Differentiate between the following pair on the basis of what is mentioned in bracket? The starch test is done on the leaf after 8 hours of exposure to light. The variable we are testing here is light that affects photosynthesis and the product formed is starch. (a) The dorsal surface of the leaf was white but the ventral surface turned blue. 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. Identify the correct inference. If the intensity of light increases the rate of photosynthesis also increases. Photosynthesis. Question 11 : Why is sleeping under a tree at night not advisable? (c) activate chloroplasts Photosynthesis occurs in two steps: Light reaction and Dark Reaction. A student performed the starch test on a leaf, some steps involved are shown below: Keywords: Photosynthesis, Photosynthesis Equation, Raw materials for Photosynthesis, Site of photosynthesis, Autotrophic nutrition. (c) white light 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. Plants absorb water through their roots, and carbon dioxide through their leaves. Boiling of leaf in alcohol: The leaf to be tested for presence of starch is boiled in alcohol to remove the pigment chlorophyll otherwise it will interfere with the starch test. (d) absorption of light energy by chlorophyll. The result was: Are you one of those who finds science fascinating? To chlorophyll because plant with a de-starched leaf detached from the leaves in water bath boiling... 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