1. Introduction

1. Introduction

Global warming is a world wide problem and is affecting the whole world. For example the melting of ice caps, which will increase the sea levels causing more floods and natural disasters. Thus,our purpose of this experiment is to test which light is the most effective for photosynthesis which can be use to make a mass Cabomba water farm to reduce global warming.

1.1   Background Research

Cabomba is an aquatic plant genus, one of two belonging to the family Cabombaceae. It has divided submerged leaves in the shape of a fan and is much favoured by aquarists as an ornamental and oxygenating plant for fishtanks.

Cabomba is frequently planted in aquaria, as an attractive-leaved water plant that is fast-growing (up to one inch per day). Green Cabomba (Cabomba caroliniana) is the most common, as well as the easiest aquarium subject. By contrast Red Cabomba (Cabomba furcata) is considered to be one of the hardest plants to take care of in the aquarium.

Cabomba plants in the aquarium require good light (i.e. 1.5-3 Watts per gallon), and warm water temperatures (from 18°-32°C). They also benefit from regular Co2 injection and a good quality substrate that is rich in all of the macro- and micronutrients (aquarists commonly use proprietary fertilizer solutions). Cabomba may be propagated by cuttings (typically a 4 inch piece of stem), which require good light conditions to root. When kept outdoors it is hardy to Zone 5. In the fall the stems break apart into sections and sink to the bottom. In spring each one sprouts as an individual plant.


1.2  Research Questions

Research Questions:

1) How will different colours of light affect the plants’ rate of photosynthesis?

2) Why will the different colours of light affect plants’ rate of photosynthesis?

3) How can this be applied in the real world

1.3  Hypothesis

We are conducting this experiment to show which wavelength generates maximum potential in rate of photosynthesis. So our hypothesis is that white light will allow the plants to photosynthesise the most since white light consist of various different colours and their wavelength ranging from 395mm to 700mm, so white light has a high chance of containing the certain wavelength that holds the maximum potential rate of photosynthesis effect on the plants. But in addition to that, white light also has many other wavelengths and their respective effect on the rate of photosynthesis on the plant. So white light includes many different effects on the rate of photosynthesis in the plant affected by the wide range of wavelengths. And this may be combined to have an even greater effect of rate of photosynthesis on the plant than an individual wavelength of light. However, our second hypothesis is that blue light will allow plants to photosynthesise the most as a single spectral light.

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