Investigating Factors That Affect the Rate of Photosynthesis
INTRODUCTION
All green plants use raw materials from their surrounding atmosphere
to make their own food. They do this by a process called
Photosynthesis. Green plants contain many tiny structures called
Chloroplasts and these contain a chemical called Chlorophyll. This
chemical is a very important part of Photosynthesis, as this is where
the plant, to produce its own food, absorbs sunlight. Photosynthesis
mainly takes place in the Palisade Mesophyll cells, which are situated
near the top of the leaf. These cells contain lots of Chloroplasts,
which are closely packed together, so that they can trap the most
amount of sunlight possible.
Diagram To Show How Photosynthesis Takes Place In a Leaf
[IMAGE]
(This diagram is taken from 'Biology for you' by Gareth Williams)
The main purpose of Photosynthesis is for a plant to produce oxygen
and glucose so that the plant can grow. It does this by absorbing
light energy in chlorophyll and using this energy to change the two
main raw materials, (Carbon Dioxide, and Water) into glucose and
oxygen. The oxygen is the waste product from photosynthesis and
therefore goes into the atmosphere. The glucose goes onto to be stored
by the plant. The plant can not store the glucose, as it is, it has to
be turned into starch. The starch is then used as food and is stored
for when it is needed. Photosynthesis is a complex reaction and can be
summed up in an equation:
carbon dioxide + water light and chlorophyll glucose + oxygen
[IMAGE] 6 CO 6 H O C H O 6 O
FACTORS THAT EFFECT PHOTOSYNTHESIS Amandeep Virk
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* Light: This factor is just as important as the others are in
Photosynthesis, without it photosynthesis would simply not take place.
It has an effect on the rate of photosynthesis and depending on the
availability and source of light, it can make photosynthesis occur
either faster or slower. The amount of light can only increase to a
at the small end of the axis to see a more reliable pattern. I could
This shows that there could be three variables in this experiment, carbon dioxide, water and light energy. So in our case the variable light energy (light intensity) will be used. The equation also shows that if there is more light energy then more glucose and oxygen will be produced.
Investigation Into the Colour of Light Needed to Start a Photosynthesis Reaction Diagrams [IMAGE] Method The apparatus for this experiment will be setup as shown in the diagram, for all the experiments the coloured filter will be 5cm away from the white light bulb, which is a 60watt bulb, and the beaker will be 20cm away from the edge of the coloured filter. Just before the experiment takes place we will place the pond weed (which has been in darkness for at least 24 hours to stop it any photosynthesis) into the beaker. I will then place the funnel over the pond weed and place the test-tube into the beaker (like the diagram above) I will then fill the beaker up with cold tap water till it covers the bottom of the test tube (450ml).
The Effect of Light Intensity on the Rate of Oxygen Production in a Plant While Photosynthesis is Taking Place
Speeding up the Rate of Photosynthesis. Outline: The aim of my experiment is to find a factor that will speed. up the rate of photosynthesis.
Investigating Factors that Affect the Rate of Photosynthesis in Elodea. Aim: To find out which factors affect the rate of photosynthesis in a systomic Elodea. A. Variables: The variables that might affect the rate of photosynthesis. in this experiment are: Temperature: When the temperature rises so does the rate of temperature.
Autotrophs, can build organic compounds from simple molecules such as water and carbon dioxide and their type of feeding is called autotrophic nutrition. While they are building complex molecules, they need large amounts of energy. They are divided into two groups according to their source of energy: chemoautotrophs and photoautotrophs. Chemoautotrophs can synthesize organic compounds from CO₂ AND H₂O by using inorganic oxidation energy and they do not require sunlight. However, photoautotrophs, including green plants, produce sugar and O₂ from CO₂ and H₂O by using sunlight. The green pigment which absorbs the light is called chlorophyll and this process is called photosynthesis.
An Analysis and Evaluation of Data from Photosynthesis Experiments Graph analysis This is my analysis for the investigation in to the affect of light intensity on the rate of photosynthesis to the Canadian pondweed, elodea. In the results the pattern is that when the light intensity is higher the readings are generally higher. On the graph the less the light intensity the lower the gradient of the curve. the equation for the photosynthesis process is; CO2 + 2H2O + Light Energy = =
Investigating the Link Between Wavelength of Light and Rate of Photosynthesis PROBLEM = = = = =
To make the test fair I will use the same amount of water and the leaf
To make sure that my test is fair I will make sure to keep all the
Photosynthesis is a highly important process that takes place in plants primarily because without it life on this planet would not be able to function properly. “It produces the oxygen we breathe and the food we eat” (Harbinson). Without photosynthesis, life would not be able to sustain itself and our planet would be a barren wasteland. The Photosynthetic process converts light energy into chemical energy. The energy that’s created through the process then later is used to help fuel the organism’s activities. This process can be significantly more complicated than it sounds with different stages and many steps.
* Count the number of bubbles seen in 1 minute which is a way of
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.
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.