The Effect of Light on the Organic Plant Elodea

845 Words2 Pages
bulb-icon

Recommended: Investigation of light intensity affacting the rate of photosynthesis

The Effect of Light on the Organic Plant Elodea

Aim: To calculate the rate of photosynthesis from the number of oxygen

bubbles produced by the plant.

Photosynthesis: The process by which green plants use the sun's energy

to build up carbohydrate reserves.

Plants make their own organic food such as starch. Plants need Carbon

dioxide, water, light and chlorophyll in order to make food; and

starch and oxygen are produced. Carbon dioxide and water are the raw

materials of photosynthesis.

The equation of photosynthesis is:

6CO2 + 6H20 Þ C6H12O6 + 6O2

===========================

Carbon dioxide + water Þ glucose + oxygen

Green plants need sunlight. They use the light energy to make a sugar

called glucose.

Glucose can be turned into another type of sugar called sucrose and

carried to other parts of the plant in phloem vessels. Glucose can

also be turned into starch and stored. Both starch and sucrose can be

converted back into glucose and used in respiration.

Photosynthesis happens in the mesophyll cell of leaves. There are two

kinds of mesophyll cells - palisade mesophyll and spongy mesophyll.

The mesophyll cells contain tiny bodies called chloroplasts which

contain a green chemical called chlorophyll. This chemical is used to

catch the light energy needed in photosynthesis.

They take carbon dioxide from the air. Plants use sunlight to turn

water and carbon dioxide into glucose. Plants use glucose as food for

energy and as a building block for growing. The way plants turn water

and carbon dioxide into sugar is called photosynthesis. That means

"putting together with light"

During the winter, there is not enough light or water for

photosynthesis. The green chlorophyll disappears from the leaves. All

plants need light in order to photosynthesise. Photosynthesis can only

occur in the presence of light.

Hypothesis: The brighter the light intensity the more bubbles that

will be produced. As the light is increased so would the rate of

photosynthesis.

Apparatus: boiling tube, 250ml beaker, bench lamp, ruler, sodium

Show More
Related

  • The Effect of Light on the Size of Ivy Leaves

    694 Words  | 2 Pages

    stems of Ivy, one from the part of the garden that is exposed to lots

    Read More

  • Chloroplast Experiment Essay

    942 Words  | 2 Pages

    For part one of the experiment, my team asked the question of which cell fraction of the measured pea seedlings will have a higher ratio of chloroplasts? My group tested for the activity of chloroplasts with three different pairs of cell fractions by two conditions of light and dark in three readings. The first two cell fractions, pellet one and two (P1, P2), are the hard sediments found at the bottom of a tube after it has been centrifuged (which are specimen, like the mitochondria and chloroplast, that are isolated from the rest) (Leicht and McAllister, 2016). The last cell fraction used was the supernatant two (S2), which is just the free liquid surrounding the pellet after the centrifuging of P2 (Leicht and McAllister, 2016). To test for this, DCIP (a chloroplast isolation buffer) was used to

    Read More

  • Investigating the Effect of Light Intensity on the Size of a Plantain Leaf

    1322 Words  | 3 Pages

    Photosynthesis consists of the following equation: Sun light Carbon dioxide + Water = = == == ==> Glucose + Oxygen Chlorophyll Chlorophyll is a substance found in chloroplasts, found in the cells of leaves.

    Read More

  • Photosynthesis Experiment

    1589 Words  | 4 Pages

    Experiment #1: The purpose of this experiment is to investigate the effects of baking soda and light intensity on the rate of photosynthesis of green spinach leave through the observation of floating disk.

    Read More

  • The Effect of Light Intensity on the Rate of Oxygen Production in a Plant While Photosynthesis is Taking Place

    512 Words  | 2 Pages

    The Effect of Light Intensity on the Rate of Oxygen Production in a Plant While Photosynthesis is Taking Place

    Read More

  • Cellular Respiration And Photosynthesis Essay

    1028 Words  | 3 Pages

    Overview of Cellular Respiration and Photosynthesis Written by Cheril Tague South University Online Cellular Respiration and Photosynthesis are both cellular processes in which organisms use energy. However, photosynthesis converts the light obtained from the sun and turns it into a chemical energy of sugar and oxygen. Cellular respiration is a biochemical process in which the energy is obtained from chemical bonds from food. They both seem the same since they are essential to life, but they are very different processes and not all living things use both to survive ("Difference Between Photosynthesis and Cellular Respiration", 2017). In this paper I will go over the different processes for photosynthesis and the processes for cellular respiration and how they are like each other and how they are essential to our everyday life.

    Read More

  • Photosynthesis Essay

    1372 Words  | 3 Pages

    The process of photosynthesis is present in both prokaryotic and eukaryotic cells and is the process in which cells transform energy in the form of light from the sun into chemical energy in the form of organic compounds and gaseous oxygen (See Equation Below). In photosynthesis, water is oxidized to gaseous oxygen and carbon dioxide is reduced to glucose. Furthermore, photosynthesis is an anabolic process, or in other words is a metabolism that is associated with the construction of large molecules such as glucose. The process of photosynthesis occurs in two steps: light reactions and the Calvin cycle. The light reactions of photosynthesis take place in the thylakoid membrane and use the energy from the sun to produce ATP and NADPH2. The Calvin cycle takes place in the stroma of the chloroplast and consumes ATP and NADPH2 to reduce carbon dioxide to a sugar.

    Read More

  • Chemotrophic Respiration and Photosynthesis

    959 Words  | 2 Pages

    Photosynthesis is the process in which plants/fungi process light photons and carbon dioxide into energy in the form of ATP and NADPH. This energy is then plugged into Calvin cycle and the biosynthesis of starch and sucrose. Photosynthesis is mainly synthesized in the chloroplast of the cell. The Chloroplast is made of three membranes which help to organize and regulate photosynthesis by creating specialized regions for the metabolic pathway to produce products and reactants. The inner membrane contains the stroma. The stroma contains thylakoids and the enzymes specific to the glycolate pathway. The thylakoid is made up of stack of grana and these grana are interconnected. These stacks of thylakoid layer together forming lumen which is semipermeable to light photons and is the proton gradient that allows for the synthesis of ATP.

    Read More

  • Heart Rate Lab Report

    998 Words  | 2 Pages

    = = = = =

    Read More

  • Photosynthesis Essay

    726 Words  | 2 Pages

    Conclusion- The data supports my hypothesis. By looking at the graph titled “Average Rate of Photosynthesis” we see massive photosynthetic activity occurring from :30 to 10:00 with particularly impressive growth occurring in red and blue light around the 5:00 and 8:30 respectively. The colors that have the highest influence on photosynthesis is blue and red. This is also why so many gardeners both amateur and professional alike use blue and red lights to grown plants. Under red light, all discs floated before the tenth minute. This was also observed with blue light. The graph shows that green had the least successful photosynthetic rate, whereas red, blue and regular natural light had the most successful photosynthetic rate. Photosynthesis involves converting light energy in chemical energy through the use of photosynthetic pigments like chlorophyll. Light from the sun is comprised of different colors, sometimes referred to as wavelengths. My data matches research conducted by other scientists: chlorophyll absorbs red and blue light more than green. The green light is instead reflected making the leaves appear green. Green light experienced almost no photosynthesis throughout the entire experiment at any time. Almost no discs floated to the top at any point. Yellow, interestingly, was an outlier. I will discuss this further in the “Limitations of Experimental Design” section.

    Read More

  • The Effect of pH on Enzyme Activity

    602 Words  | 2 Pages

    = = = = ==

    Read More

  • Investigating the Effect of Light Intensity on Photosynthesis in a Pondweed

    1053 Words  | 3 Pages

    Investigating the Effect of Light Intensity on Photosynthesis in a Pondweed Aim: To investigate how the rate of photosynthesis changes at different light intensities, with a pondweed. Prediction: I predict that the oxygen bubbles will decrease when the lamp is further away from the measuring cylinder, because light intensity is a factor of photosynthesis. The plant may stop photosynthesising when the pondweed is at the furthest distance from the lamp (8cm). Without light, the plant will stop the photosynthesising process, because, light is a limited factor. However once a particular light intensity is reached the rate of photosynthesis stays constant, even if the light intensity is the greatest.

    Read More

  • Light and Photosynthesis

    1268 Words  | 3 Pages

    Photosynthesis is a process in plants that converts light energy into chemical energy, which is stored in bonds of sugar. The process occurs in the chloroplasts, using chlorophyll. Photosynthesis takes place in green leaves. Glucose is made from the raw materials, carbon dioxide, water, light energy and oxygen is given off as a waste product. In these light-dependent reactions, energy is used to split electrons from suitable substances such as water, producing oxygen. In plants, sugars are produced by a later sequence of light-independent reactions called th...

    Read More

  • Autotrophs Essay

    1542 Words  | 4 Pages

    In plants, proteins called photosynthetic reaction centers contain green chlorophyll that absorbs light energy. These proteins are held inside organelles called chloroplasts, which is abundant in leaf cells. In contrast, bacteria house the proteins in the plasma membrane. Chloroplasts are found in the cells of green plants and photosynthetic algae where photosynthesis takes place. Inside the chloroplast are folded structures in disk-shaped arrangement called thylakoids, which enclose chlorophyll in their membrane. Only certain portions of the light spectrum can be absorbed and the photosynthetic action spectrum is dependent on the type of accessory pigment present. Green plants mostly absorb red and blue wavelengths because the action spectrum corresponds to absorption spectrum for chlorophylls and carotenoids. The color of the pigment comes from the wavelengths of light reflected. Plants appear green because they reflect yellow and green wavelengths of light. Photosynthesis involves two series of chemical events, called the light independent that occurs in the stroma and light dependent reactions that occurs in the lumen. They are also known as light and dark reactions this terminology is somewhat ambiguous, because the entire process of photosynthesis is regulated to take place when an organism absorbs visible light. Organized clusters of chlorophyll and beta-carotene in the thylakoid membrane are present to

    Read More

  • An Experiment to Investigate the Effect of Light Intensity on the Rate of Photosynthesis

    970 Words  | 2 Pages

    An Experiment to Investigate the Effect of Light Intensity on the Rate of Photosynthesis. Introduction Photosynthetics take place in the chloroplasts of green plant cells. It can produce simple sugars using carbon dioxide and water causing the release of sugar and oxygen. The chemical equation of photosynthesis is: [ IMAGE ] 6CO 2 + 6H20 C 6 H12 O 6 + 6O2 It has been proven many times that plants need light to be able to photosynthesize, so you can say that without light the plant would neither photosynthesize nor survive.

    Read More

More about The Effect of Light on the Organic Plant Elodea

Open Document