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