Photosynthesis is the process plants (or photoautotrophs) use to convert energy from the sun, carbon dioxide, and water into food (carbohydrates). To … Log in. Method: 1. Watch Queue Queue. This is a simple demonstration that allows your students to observe photosynthesis firsthand. NCERT DC Pandey Sunil Batra HC Verma Pradeep Errorless. A pinch of KHCO 3 is added to it. Join now. This is an example of a common experiment used to investigate light intensity and the rate of photosynthesis. Hi, im investigating the effects of Sodium Hydrogen Carbonate (also known as sodium bicarbonate) on the rate of photosynthesis. 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. Answer 2. Favorite Answer. 3. ... For this extension, an aquatic algal plant such as a hydrilla must be used as photosynthesis still must take place take place underwater. 3.CO2 is a reactant in the dark stage of photosynthesis. 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. 1 decade ago. Thanks for any help! 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. Why only hydrilla plant is used in the experiment to prove that oxygen is necessary for the photosynthesis. 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. Anonymous. 0 0. 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. Class-10 » Biology. Investigating the rate of photosynthesis. B. In this experiment, the relationship between the photosynthesis rate and temperature on Elodea is investigated. Why pond water is used? C. CO 2 is necessary for photosynthesis. Light is necessary for photosynthesis. Some days (or even weeks later), a disk is cut out of the other half of the leaf, dried and weighed. Count bubbles for five minutes. Take a potted plant and make its leaves destrached by keeping it in dark for one or two days. The products of photosynthesis in aquatic plants, basically carbohydrate and oxygen, are used by other organisms living in the same biotic community. photosynthesis to produce the nutrient from water, sunlight, and carbon dioxide (CO 2). (ii) Hydrilla plant twigs. Hydrilla sprigs experiment 1. Carbon Dioxide and Light are the factors that I will change in the experiment as they are easy to change and measure. After one minute, count and record the number of oxygen bubbles rising from the cut end of the stem. Answer Save. (iii) The leaf inside the conical flask would be tested for the presence of starch by the application of iodine. Experiment to demonstrate that light is necessary for the process of photosynthesis: Requirements: Ganong’s light screen, a potted plant and iodine. A2. Eg to test if carbon dioxide is required for photosynthesis. What pupil does They can do photosynthesis inside the water. 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. Please explain how sodium carbonate affects the rate of photosynthesis. And just like animals, plants do require oxygen, but in small amounts. Why should the level of photosynthesis increase because sodium bicarbonate was added to the water? Hydrilla can also become established in lakes with high turbidity when others cannot. Why only hydrilla plant is used in the experiment to prove that oxygen is necessary for the photosynthesis. Why is this important? (iv) Incense stick PREVIOUSLY ASKED QUESTIONS 1 Mark Questions 1. 10. If bubbles fail to appear, cut off more of the stem and recrush. This video is unavailable. For demonstration of photosynthesis experiments, usually aquatic plant Hydrilla is used , not any terrestrial plant , why ? Synonyms include H. asiatica, H. japonica, H. lithuanica, and H. ovalifolica. For demonstration of photosynthesis experiments, usually aquatic plant Hydrilla is used , not any terrestrial plant , why ? First fill up a beaker with water and place the hydrilla plant inside the water. A. Chlorophyll is necessary for photosynthesis. The teacher can now review what a hypothesis is and how to write a specific, testable hypothesis. Answer. Running the Experiment 1. Increasing the concentration of CO2 increases the rate of photosynthesis. Sodium hydrogen bicarbonate was used in this experiment to supply carbon dioxide to the pineapple leaf discs to perform photosynthesis. Asking for help, clarification, or responding to other answers. It is placed to remove CO 2 within the conical flask. Light Attenuation and Photosynthesis. Experiment. Dibyani Badajena. Requirements:-Hydrilla twigs, Beaker, a glass funnel, a Test tube, a beehive arrangement, pond water, a glowing splinter. No wonder hydrilla has become the most invasive aquatic plant in Florida. A: (i) The given apparatus is used to prove that O 2 is released during photosynthesis. 3. 2. Books. Why should the level of photosynthesis increase because sodium bicarbonate was added to the water? (TS: Mar 2015) A: 2. A Hydrilla is a non-native plant. What molecule did the sodium … Physics. To test that oxygen is evolved during photosynthesis few fresh Hydrilla plants in a glass beaker filled with water. Harshit Agarwal. 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. Problems with creating sodium hydroxide from sodium (hydrogen) carbonate. Place a 40 watt lamp 5 cm from the plant. 2 Answers. 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. Place the lamp (the only light source) at a fixed distance from the plant. D. Oxygen is evolved during photosynthesis. Chemistry. The equation for photosynthesis is as follows: Carbon dioxide + water ->glucose + oxygen. As oxygen is produced through photosynthesis, it travels up the stem of the funnel into the test tube where it displaces the water. Why were the plants kept in the dark prior to the experiment? The byproduct of that process is oxygen, and you can prove it using a simple science experiment! 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 … Procedure for the experiment Take a beaker and fill 3/4ths of it with pond water. Relevance . Photosynthesis is a vital process in the … EXPAND Content Hydrilla plant was used in this experiment because it is an aquatic plant. Fix a leaf of this plant in between the Ganong’s screen. Place a pond weed Elodea upside in a test tube containing water at 25°C. The function of the sodium bicarbonate is providing carbon dioxide for photosynthesis to occur. Share 4. This project is … Why is hydrilla stem cut underwater in photosynthesis experiment? This way, aquatic plants undergo photosynthesis under water. 2.CO2. Explain why this happens. Log in. Biology. Hydrilla sprigs experiment to D don’t have the substance that will undergo photosynthesis, which is the Hydrilla plant. (ii) Potassium hydroxide absorbs CO 2 from the surrounding. Pour equal amounts of the solution (20 mL each) in four large test tubes labeled A to D. 2. It can photosynthesize in water. 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. Photosynthesis Karen F. Adams Burnside Scholastic Academy 650 East 91st Place Chicago IL 60619 312-535-3300 ... PART B. Place excess sodium bicarbonate (NaHCO3) in the water to give a constant saturated solution of CO2. 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. What teacher does Why Hydrilla plant is used in this experiment? Bio 10 Exer 6 - Photosynthesis. E. densa, E. canadensis, and Chara offer great aquatic organisms to use for this activity. Photosynthesis is the chemical change by which plants use carbon dioxide and water, with the aid of sunlight, to make glucose and oxygen. Light is also directly used in the photosynthesis reaction and is easy to change in normal lab conditions. Share with your friends. 1.Rate increases as long as no other factor is rate limiting. Watch Queue Queue (i) The aim of the experiment is to prove that CO 2 is necessary for photosynthesis. Place the tube in a beaker of fresh water. Basic Materials needed for lab group of 3-4 students:-Spinach leaves -4 mm core borer (used to cut holes in cork stoppers, can … 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. 4 years ago. Plants use the same visible light spectrum as humans (wavelengths between 400 and 700 nanometers). Subject: Biology, asked on … Join now. 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. To prove that oxygen is evolved in green plants during photosynthesis. Hydrilla leaf is used in an experiment to test that. If possible , please help me design an experiment to … Theresa. Secondary School . 2. 1. Why only hydrilla plant is used in the experiment to prove that oxygen is necessary for the photosynthesis. Pond water is used so that plant gets Co2 dissolved in water. (iii) Funnel, hydrilla twigs, a beaker and water. Take some freshly cut Hydrilla twigs and insert them in the nozzle from below the stem of a glass funnel. Prepare your own tabular column to get information about food deficiency diseases from a doctor. 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