Intensity of Light and Rates of Photosynthesis

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Effects of different colors of light on plant growth.

Count bubbles of oxygen gas given off by elodea to determine the rate of photosynthesis.4.

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The effect of light on seed germinationWhat is Transpiration?

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.

In this experiment we were told that we would be measuring the rate of photosynthesis.

I can say that the
increase in distance thus making the light intensity stronger
increased the rate of photosynthesis and when further away made the
rate of photosynthesis almost come to its limiting factor the
straitening of the graph.

This means that the light is limiting the rate of photosynthesis.

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

Effect of different colors of light on the rate of photosynthesisThe effect of different lights on plant growth: incandescent light, fluorescent light, sunlight and black light.

Here are some uses of energy:

* Sugars into starch

* Sugars into cellulose- needed for cell walls

* Sugars, nitrates and other nutrients for protein- for growth and to
make to enzymes

* Sugars into lipids for storing in seeds

Factors affecting photosynthesis

Temperature, carbon dioxide concentration and light can
interact to limit the .

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

The colour of the lamp will stay the
same (yellow) as to plants Chlorophyll easily absorbs blue light,
however it does not easily absorb green or yellow light, rather it
reflects it, this decrease's the rate of photosynthesis.

I will measure the rate of photosynthesis by counting the number of bubbles that are released by the stem of the pond-weed when the lamp is shone on it from different distances.

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  • Effects of different colors of light on the photosynthesis rate.

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

  • Time (min.) Rate of Photosynthesis

    Photosynthesis need light to work, so light therefore should speed up the rate of photosynthesis.

  • what factors affect the rate of photosynthesis?

    [IMAGE] 1) Here as the light intensity increases so does the rate of photosynthesis.

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how does light intensity affect the rate of photosynthesis?



Variables

Input - Light intensityis to be varied by increasing and decreasing
the distance from the light source to the plant

Output - The rate of photosynthesisis to be measured by counting the
bubbles of oxygen produced by the plant every two minutes, and
therefore finding the rate of photosynthesis

Control - The amount of water available to the Elodea will stay the
same level in the 400 cm3 beaker.

how does temperature affect the rate of photosynthesis?

Background information: Photosynthesis Photosynthesis is the process of autotrophs turning carbon dioxide and water into carbohydrates and oxygen, using light energy from sunlight.

Photosynthesis consists of two connected sets of reactions....

The Effect of the Type of Soil on the Amount of Chlorophyll in Bean PlantsThe Effects of Wavelengths of Light on Plant Food ProductionEffect of different colors of light on the growth of plants Do plants need sunlight to be green?

The same cycle of the light reaction then takes place.

The effects of various pH levels on the photosynthesis process of the aquatic plant elodeaThe effects of phosphorous on the photosynthesis of aquatic plantsDoes light affect stem growth?

Effect of a Varying Light Intensity on Rate of Photosynthesis ..

The the above procedure was repeated four times so that we could expose the sets of 10 leaf disks to different conditions to examine factors that affect the rate of photosynthesis. Below are the conditions for the 4 separate experiments we conducted

#41 Effect of Light intensity on the rate of Photosynthesis

Follow in the steps of van Helmont, John Woodward, Joseph Priestley and Jan Ingenhousz and discover photosynthesisIs plant growth affected by exposure to ultraviolet light?

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