Date post: | 27-Dec-2015 |
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Question
Does the Oxygen in sugar come from the CO2 or from the H2O ?
Model:
CO2 + 2 H2O ----> CH2O + O2
Comment
In oceans, red light is lost or filtered out early because it has lower energy.
Only blue light which has higher energy can reach the lower depths.
Result
Many deep ocean fish are bright red in color.
Why? They can’t be seen because
there is no red light to reflect their color.
C3 Ps vs C4 Ps
Photorespiration
Shade to full sun
High water use
Cool temperatures
Slow to moderate growth rates
Cool season crops
No Photorespiration
Full sun only
Moderate water use
Warm temperatures
Very fast growth rates
Warm season crops
Ps:Rs Ratios Reflect a plant’s balance in
making food and using food.1. Ps > Rs, energy available
for growth and reproduction.2. Ps = Rs, no growth, but don’t
die either.3. Ps < Rs, death by starvation