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