Take a potted plant and make its leaves destrached by keeping it in dark for one or two days. This experiment could certainly be done with land plants, but using a water plant makes it easier to have a simple way to measure the rate of photosynthesis--the counting of … Why only hydrilla plant is used in the experiment to prove that oxygen is necessary for the photosynthesis. 3. Students should be thinking about the question they will raise about the photosynthesis experiment and if an investigation can be designed to test their question. Eg to test if carbon dioxide is required for photosynthesis. Please explain how sodium carbonate affects the rate of photosynthesis. Place excess sodium bicarbonate (NaHCO3) in the water to give a constant saturated solution of CO2. For demonstration of photosynthesis experiments, usually aquatic plant Hydrilla is used , not any terrestrial plant , why ? Prepare your own tabular column to get information about food deficiency diseases from a doctor. (iii) The leaf inside the conical flask would be tested for the presence of starch by the application of iodine. This is an example of a common experiment used to investigate light intensity and the rate of photosynthesis. This way, aquatic plants undergo photosynthesis under water. Photosynthesis is the chemical change by which plants use carbon dioxide and water, with the aid of sunlight, to make glucose and oxygen. Hydrilla leaf is used in an experiment to test that. (iii) Funnel, hydrilla twigs, a beaker and water. What teacher does Why Hydrilla plant is used in this experiment? The products of photosynthesis in aquatic plants, basically carbohydrate and oxygen, are used by other organisms living in the same biotic community. It can photosynthesize in water. Answer Save. Class-10 » Biology. ... For this extension, an aquatic algal plant such as a hydrilla must be used as photosynthesis still must take place take place underwater. Problems with creating sodium hydroxide from sodium (hydrogen) carbonate. Light Attenuation and Photosynthesis. (i) The aim of the experiment is to prove that CO 2 is necessary for photosynthesis. For demonstration of photosynthesis experiments, usually aquatic plant Hydrilla is used , not any terrestrial plant , why ? Plants use the same visible light spectrum as humans (wavelengths between 400 and 700 nanometers). Answer. Thanks for any help! A. Chlorophyll is necessary for photosynthesis. The function of the sodium bicarbonate is providing carbon dioxide for photosynthesis to occur. The byproduct of that process is oxygen, and you can prove it using a simple science experiment! 1 decade ago. Photosynthesis Karen F. Adams Burnside Scholastic Academy 650 East 91st Place Chicago IL 60619 312-535-3300 ... PART B. 10. Dibyani Badajena. Experiment to demonstrate that light is necessary for the process of photosynthesis: Requirements: Ganong’s light screen, a potted plant and iodine. Why only hydrilla plant is used in the experiment to prove that oxygen is necessary for the photosynthesis. Anonymous. And just like animals, plants do require oxygen, but in small amounts. Why only hydrilla plant is used in the experiment to prove that oxygen is necessary for the photosynthesis - Biology - NCERT Solutions; Board Paper Solutions; Ask & Answer; School Talk; Login ; GET APP; Login Create Account. Synonyms include H. asiatica, H. japonica, H. lithuanica, and H. ovalifolica. Watch Queue Queue Prepare the following set-up: a. TT A: Hydrilla sprigs + carbon paper wrap b. TT B: Hydrilla sprigs c. TT C: carbon paper wrap d. TT D: none Note: Make sure that the sprigs are of the same developmental stage, length, and leaf size. Join now. Biology. Photosynthesis itself is a rapid process of converting the water and sunlight into chemical energy and storing it to the entire plant parts which happens at the noon when the sun bright fully. 2. Books. Bio 10 Exer 6 - Photosynthesis. Take some freshly cut Hydrilla twigs and insert them in the nozzle from below the stem of a glass funnel. Requirements:-Hydrilla twigs, Beaker, a glass funnel, a Test tube, a beehive arrangement, pond water, a glowing splinter. Hi, im investigating the effects of Sodium Hydrogen Carbonate (also known as sodium bicarbonate) on the rate of photosynthesis. After one minute, count and record the number of oxygen bubbles rising from the cut end of the stem. 2.CO2. Subject: Biology, asked on 6/7/13 difference between the following:-producers and consumers (mode of nutrition) grass and grasshopper (mode of nutrition) chlorophyll and chloroplast (part of plant cell) Answer 1. Procedure for the experiment Take a beaker and fill 3/4ths of it with pond water. Why should the level of photosynthesis increase because sodium bicarbonate was added to the water? Our video demonstrates how best to use this protocol with your students in the lab, which species of pondweed can be used, how to care for pondweeds and a short explanation on the physiology that allows pondweed to bubble. 2. Measuring photosynthesis via the production of carbohydrates There is a crude method where a disc is cut out of one side of a leaf (using a cork borer against a rubber bung) and weighed after drying. Basic Materials needed for lab group of 3-4 students:-Spinach leaves -4 mm core borer (used to cut holes in cork stoppers, can … To … Some days (or even weeks later), a disk is cut out of the other half of the leaf, dried and weighed. 4 years ago. Place a 40 watt lamp 5 cm from the plant. Sodium hydrogen bicarbonate was used in this experiment to supply carbon dioxide to the pineapple leaf discs to perform photosynthesis. Explain why this happens. 1.Rate increases as long as no other factor is rate limiting. Theresa. The teacher can now review what a hypothesis is and how to write a specific, testable hypothesis. Chemistry. To do this, I will place a piece of pondweed in varying light intensities and temperatures, and observe the amount of oxygen being given off. Answer 2. Light is also directly used in the photosynthesis reaction and is easy to change in normal lab conditions. Because hydrilla is a small plant and hence easy to handle and also it is a aquatic plant so it is able to breath in water whereas land plants are not. This is a simple demonstration that allows your students to observe photosynthesis firsthand. Carbon Dioxide and Light are the factors that I will change in the experiment as they are easy to change and measure. (iv) Incense stick PREVIOUSLY ASKED QUESTIONS 1 Mark Questions 1. E. densa, E. canadensis, and Chara offer great aquatic organisms to use for this activity. Log in. In this experiment, the relationship between the photosynthesis rate and temperature on Elodea is investigated. Hydrilla (Esthwaite Waterweed or Hydrilla) is an aquatic plant genus, usually treated as containing just one species, Hydrilla verticillata, though some botanists divide it into several species. 1. A: (i) The given apparatus is used to prove that O 2 is released during photosynthesis. What molecule did the sodium … If possible , please help me design an experiment to … (TS: Mar 2015) A: 2. Share with your friends. Pond water is used so that plant gets Co2 dissolved in water. (ii) Hydrilla plant twigs. It is placed to remove CO 2 within the conical flask. Harshit Agarwal. What pupil does They can do photosynthesis inside the water. Why is this important? Find an answer to your question Why only hydrilla plant is used in the experiment to prove that oxygen is necessary for the photosynthesis 1. 2 Answers. Subject: Biology, asked on … D. Oxygen is evolved during photosynthesis. Investigating the rate of photosynthesis. 3. 3.CO2 is a reactant in the dark stage of photosynthesis. Hydrilla can also become established in lakes with high turbidity when others cannot. Fix a leaf of this plant in between the Ganong’s screen. No wonder hydrilla has become the most invasive aquatic plant in Florida. C. CO 2 is necessary for photosynthesis. Hydrilla sprigs experiment 1. Light is necessary for photosynthesis. As oxygen is produced through photosynthesis, it travels up the stem of the funnel into the test tube where it displaces the water. Hydrilla sprigs experiment to D don’t have the substance that will undergo photosynthesis, which is the Hydrilla plant. 0 0. Count bubbles for five minutes. This video is unavailable. A pinch of KHCO 3 is added to it. Place the tube in a beaker of fresh water. B. The equation for photosynthesis is as follows: Carbon dioxide + water ->glucose + oxygen. Photosynthesis is the process plants (or photoautotrophs) use to convert energy from the sun, carbon dioxide, and water into food (carbohydrates). If bubbles fail to appear, cut off more of the stem and recrush. Favorite Answer. (ii) Potassium hydroxide absorbs CO 2 from the surrounding. Photosynthesis is a vital process in the … Place a pond weed Elodea upside in a test tube containing water at 25°C. the Rate of Photosynthesis Aim The aim of my experiment is to determine whether intensity of light and temperature would affect the rate of photosynthesis in a plant. Watch Queue Queue. A Hydrilla is a non-native plant. A2. Asking for help, clarification, or responding to other answers. Why should the level of photosynthesis increase because sodium bicarbonate was added to the water? Join now. This project is … Physics. Place the lamp (the only light source) at a fixed distance from the plant. Relevance . Secondary School . EXPAND Content Hydrilla plant was used in this experiment because it is an aquatic plant. photosynthesis to produce the nutrient from water, sunlight, and carbon dioxide (CO 2). To prove that oxygen is evolved in green plants during photosynthesis. NCERT DC Pandey Sunil Batra HC Verma Pradeep Errorless. Pour equal amounts of the solution (20 mL each) in four large test tubes labeled A to D. 2. First fill up a beaker with water and place the hydrilla plant inside the water. Experiment. Running the Experiment 1. Share 4. Increasing the concentration of CO2 increases the rate of photosynthesis. Method: 1. To test that oxygen is evolved during photosynthesis few fresh Hydrilla plants in a glass beaker filled with water. Why pond water is used? Why is hydrilla stem cut underwater in photosynthesis experiment? Why were the plants kept in the dark prior to the experiment? Why only hydrilla plant is used in the experiment to prove that oxygen is necessary for the photosynthesis. Log in. 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