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Effects of different colors of light on plant growth.

An example of photosynthesis is how plants convert sugar and energy from water, air and sunlight into energy to grow.

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The effect of light on seed germinationWhat is Transpiration?

Fig. 6. The photosynthetic rate of wheat canopies grown at two CO2levels (ambient: 330 and saturating: 1200 -1). The arrow indicates a change in the PPF from 800 to1400 -2 s-1.The photoperiod was 20-h. There was no evidence for feedback inhibition ofphotosynthesis, as indicated by a decreasing photosynthetic rate during thephotoperiod, in any of the conditions except at the highest PPF level coupledwith elevated CO2. The magnitude of feedback inhibition graduallydecreased in the days following the increase in PPF. Within about 6 days afterthe PPF was increased, the decrease in photosynthesis was less than 5% of therate at the start of the light period. The daily integrated PPF at 1400 -2 s-1 was 100.8 mol m-2 d-1,or about twice full summer sunlight. Plants were grown at a constant 23C day/night temperature. Data are from Monje (1993).


I will do this by placing the Elodea in a test tube with sodium hydrogen carbonate then I will vary the light wavelength (color) using colored filters and count the number of oxygen bubbles given off using a pencil dot technique....

How does the type of light affect the number of leaf stomata?

How does light intensity and duration affect the rate of photosynthesis?

If the wavelength available to the plant affects
photosynthesis, then we would expect to see a difference in the photosynthetic rates
produced by the different colors of light, and therefore a measurable difference in the
amount of O2 produced during photosynthesis.
Total or GROSS photosynthesis, is the total amount of carbon fixed or oxygen
released by a plant in the light.

Chabot, B.F., T.W. Jurik, and J.F. Chabot. 1979. Influence of instantaneous and integrated light-flux density on leaf anatomy and photosynthesis. Amer. Jour. Botany 66:940-945.

Effect of different colors of light on the rate of photosynthesis.

Investigate the effect of light on seed germination.

This process is often summarized
by the following reaction:
6 H2O + 6 CO2 + light energy ⟶C6H12O6 + 6 O2
Cellular respiration refers to the process of converting the chemical energy of organic molecules
into a form immediately usable by organisms.

Glucose may be oxidized completely if sufficient
oxygen is available, illustrated by the following equation:
C6H12O6 + 6 O2 ⟶6 H2O + 6 CO2 + energy
The rate of photosynthesis is affected by numerous factors including the amount
and the wavelength of light available.

Compare the affects of types of artificial light on plant growth.
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  • Public attention; general knowledge: brought the scandal to light.

    In this experiment I will investigate how sodium hydrogen carbonate affects the rate of photosynthesis.

  • Then direct a light onto this experiment.

    Aim: We will be trying to see if light intensity has an effect on the rate of photosynthsis.

  • Not solemn or serious: spoke in a light manner of the situation.

    Photosynthesis requires the following resources; Carbon Dioxide, Water and light.

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the study of the reflection and refraction of light.

Prediction : I predict that as I increase the distance between the light source and the Canadian Pondweed (reducing the light intensity), the volume of oxygen produced within the time limit (the measure of the rate of photosynthesis) will decrease.

Close the linear regression box.11.

Hypothesis:Photosynthesis is a process by which green plants and certain other organisms use the energy of light to convert carbon dioxide and water into the simple sugar glucose....

Position the chamber under the light.

During the process of photosynthesis, carbon dioxide plus water in the presence of sunlight, enzymes and chlorophyll produce glucose and oxygen as waste product.

the science or study of light in relation to the movement of plants.

the condition or quality of changing in color or luster depending on the angle of light, especially of a gemstone that reflects a single shaft of light when cut in cabochon form.

the tendency to thrive in strong light, as plants.

You will analyze the entire class dataset, giving you
approximately 10-20 samples per treatment.
Your goal is to determine which color of light is the best driver of photosynthesis.

the measurement of the polarization of light, as with a polarimeter.

Used with on or upon : lit on the perfect solution to the problem. Phrasal Verbs: light into Informal To attack verbally or physically; assail.

The same cycle of the light reaction then takes place.

You will either measure the respiration/ photosynthesis rate of Elodea under two of
five colors of lights (blue, green, orange, red, and white) (Parts A & B); or, you will record the
absorption spectrum for Elodea (Parts C & D), and measure the respiration/ photosynthesis rate
of Elodea under one of five colors of lights (blue, green, orange, red, and white) (Parts A & B).
Each color of light (blue, green, orange, red, and white) represents one treatment.

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