Biology MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. The raw material for respiration is glucose. Boil the leaf in methylated spirit in a water bath to remove the chlorophyll, till the leaf turns pale blue and becomes hard and brittle. The gas released during photosynthesis is oxygen. Also most of the oxygen produced during photosynthesis diffuses out into the atmosphere through the stomata. Become our . CBSE Class 10 Lab Manual for Chapter 2 Light Is Necessary For Photosynthesis The laboratory is important for making the study complete, especially for a subject like Science and Maths. (3) solution in added. (a) Light is required for photosynthesis. If so, state it. Cell Cycle and Cell Division MCQs 2. You may also like. The gas released during respiration is carbon dioxide. Plant anatomy MCQs 2. Consumers show heterotrophic mode of nutrition i.e. Summary. (g) Photosynthesis is considered as a process supporting all life on earth. Hence before starting an experiment on photosynthesis, the plant should be placed in the dark for 24-48 hours to destarch the leaves. Prepared by: Nauman Sadaf. The process of taking in CO 2 by plants and releasing O 2 is termed as (a) Transpiration (b) Respiration (c) Photosynthesis (d) Endosmosis (c) Photosynthesis. (a) Carbon dioxide is reduced and water is oxidised, (b) Water is reduced and carbon dioxide is oxidised, (c) Both carbon dioxide and water are oxidised, (d) Both carbon dioxide and water are reduced, The specific function of light energy in the process of photosynthesis is to, A plant is kept in a dark cupboard for 48 hours before conducting any experiment on photosynthesis in order to, (c) ensure that no photosynthesis occurred, (d) ensure that the leaves are free from starch, During photosynthesis, the oxygen in glucose comes from. c. Destarching ensures that any starch present after the experiment has been formed under experimental conditions. F0 is embedded in the membrane and forms a transmembrane channel that carries out facilitated diffusion of protons across the membrane. This class will be conducted in Hindi/English and the notes will be provided in English. they are able to produce their own food from basic raw materials. The scientists conducted many experiments and discovered that the 5-carbon RuBP as the initial acceptor molecule. 1. The chloroplasts are concentrated in the upper layers of the leaf which helps cells to trap the sunlight quickly. View Answer Answer: Three cell organelles 2 Stomata opens … How many turns of Calvin cycle yield one molecule of glucose? There is no start point or end point in the carbon cycle, the carbon is constantly circulated between the atmosphere and the living organisms. b) 870 nm. (ii) Dark reaction: The reactions in this phase does not require light energy and occur simultaneously with the light reaction. The net products of non-cyclic photophosphorylation are ATP, NADPH and O2. The time gap between the light and dark reaction is less than one thousandth of a second. Air pollution is not caused by hydro-electric power plants. Hence, it is difficult to demonstrate respiration as these two processes occur simultaneously. With four organisms 1-4. Cell Cycle and Cell Division MCQs 2. The difference in the colours of covered and uncovered part of leaves indicates the importance of sunlight in photosynthesis. Photosynthesis ICSE Class-10 Concise Selina Biology Solutions Chapter-6. Glucose is the main product formed during dark reaction. Some of this oxygen may be used in respiration in the leaf cells, but the major portion of it is not required and it diffuses out into the atmosphere through the stomata. (f) If a plant is kept in bright light all the 24 hours for a few days, the dark reaction (biosynthetic phase) will fail to occur. Save … This gives oxygen, one of the net products of photosynthesis and the electrons. (a) What aspect of photosynthesis was being tested? Water is taken up by the roots from the soil, sent up through the stem and finally brought to the leaves (site of photosynthesis) through the xylem tissue. Photons, grana, water molecules, hydrogen and hydroxyl ions, oxygen. At the end of Multiple Choice Questions, the answer key has also been provided for your reference. (c) What is the purpose of keeping a snail in test-tube B? Life processes include nutrition, respiration, circulation or … Unit 10 – Simple Harmonic Motion and Waves Exercise MCQs Practice Test /9. MCQs on Our Environment chapter of class 10 Science are provided here with answers. This reaction is known as photolysis of water. (Make sure the level of water in the beaker is above the level of the stem of the funnel). 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