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Nutrition
Atmospheric carbon dioxide concentration minerals and gases as well as products
The average concentration of carbon dioxiode of photosynthesis. Shortage of water
in the atmosphere is about 0.03%. As the leads to wilting of plant leaves, which in
concentration of carbon dioxide increases turn causes closing of the stomata. This
from the average value, it also increases the results into a reduced diffusion rate of
rate of photosynthesis. Carbon dioxide is carbon dioxide into the chloroplast, and
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required in light independent reactions, but hence a decreased rate of photosynthesis.
the concentration above 0.1% can damage Additionally, water shortage causes cells to
the plant leaves. On the other hand, low become flaccid; thus, they cannot function
levels of carbon dioxide tend to limit the rate
of photosynthesis. It should be noted that, well and this affects the translocation of
C plants are affected by low concentration synthesised products.
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of carbon dioxide in the atmosphere, while Light
C plants are efficient in utilising carbon
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dioxide even when the concentration of Task 5.8
carbon dioxide in the atmosphere is low. Search from the internet sources on
simulations on the effects of light
Temperature intensity and carbon concentration on the
Within the optimum range of temperature, rate of photosynthesis and then prepare
the rate of photosynthesis tends to double short notes.
for every 10 C rise of temperature. For
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example, the optimum temperature for The effect of light on the rate of photosynthesis
plants that survive in temperate climates can be described on the basis of its quality
is 25 C. The temperature above 35 C (light wavelength) and quantity (light
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usually causes denaturation of enzymes intensity).
catalysing photosynthesis in both, dark and Light quality (wavelength of colours):
light reactions. This will lead to slowing Photosynthesis usually occurs when green
down or stopping of the photosynthesis plants absorb light within a limit of visible
process. In low temperature, such as below light spectrum. The most effective range
10 C, enzymes catalysing photosynthesis is within a red-orange band (600nm-700 nm)
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become inactive, hence lowering its rate. and a blue-violet band (400nm-500 nm).
The central band is also effective, but
Nutrients supply (availability of nutrients) less than others because the chlorophyll
Minerals, such as magnesium and nitrogen, molecules show very little absorption
are components of chlorophyll. Deficiency of light in this region. Maximum light
of these minerals reduces the rate of absorption corresponds to the maximum
photosynthesis because the plant lacks rate of photosynthesis.
enough chlorophyll molecules for trapping Light intensity: The rate of photosynthesis
enough light energy. varies proportionally to light intensity.
However, at a certain point called light
Water availability saturation point, the rate of photosynthesis
Water is one of the essential raw materials reaches its maximum and therefore attains
for photosynthesis. It also plays other roles constancy. Any further increase in light
in the plant body, such as translocation of
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