Background information: Photosynthesis Photosynthesis is the process of autotrophs turning carbon dioxide and water into carbohydrates and oxygen, using light energy from sunlight.
The main ingredient in plants that is responsible for photosynthesis is chlorophyll. Some researchers extracted chlorophyll from plants and studied its response to different wavelengths of light, believing that this response would be identical to the photosynthetic response of plants. However, it is now known that other compounds (carotenoids and phycobilins) also result in photosynthesis. The plant response curve, therefore, is a complex summation of the responses of several pigments and is somewhat different for different plants. An average is generally used which represents most plants, although individual plants may vary by as much as 25% from this curve.
what apparatus can you use to measure the speed of photosynthesis?
This process is also affected by the temperature surrounding the plant (the species of plant we experimented with, pond weed, photosynthesised best at around 20 degrees centigrade.) Light, temperature & CO2 are known as limiting factors, and each is as important as the next in photosynthes...
WS Comparing Photosynthesis to Cellular Respiration level ..
However, the longer wavelengthtends to be less adversely affected by elevated heatsink temperatures around35-70 degrees C.For specific LEDs and red/blue ratios, go to Photosynthesis works most fundamentally from red light and secondarily fromblue light.
WS Comparing Photosynthesis to Cellular Respiration level …
Photosynthesis and Photomorphogenesis Plants receiving insufficient light levels produce smaller, longer (as compared to wide) leaves and have lower overall weight. Plants receiving excessive amounts of light can dry up, develop extra growing points, become bleached through the destruction of chlorophyll, and display other symptoms of excessive stress. Plants are also damaged by excessive near (infrared) radiation, or extreme ultraviolet (UV) radiation.
Chapter 10 - Photosynthesis | CourseNotes
In general, plants require nitrogen in the form of soil nitrates which their roots can absorb.
Cyanobacteria are the only organisms able to perform both oxygenic (oxygen-generating) photosynthesis and
There are about half a million chloroplasts per square ..
I believe this will happen because when the light source is nearer to the plant more of the plants surface area is coming in to contact with the light from the desk lamp therefore more photosynthesis will occur which will mean more oxygen will be produced which will create more bubbles....
Photosynthesis: Science Lesson | TV411
PAR and Plant Response Curve just as humans need a balanced diet, plants need balanced, full spectrum light for good health and optimum growth. The quality of light is as important as the quantity. Plants are sensitive to a similar portion of the spectrum as is the human eye. This portion of the light spectrum is referred to as Photosynthetically Active Radiation or PAR, namely about 400 to 700 nanometers in wavelength. Nevertheless, plant response within this region is very different from that of humans. The human eye has a peak sensitivity in the yellow-green region, around 550 nanometers. This is the "optic yellow" color used for highly visible signs and objects. Plants, on the other hand, respond more effectively to red light and to blue light, the peak being in the red region at around 630 nanometers. The accompanying graphs show the human eye response curve and the plant response curve. Note the vast difference in the contours.