bluemadhatter
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Humidity
Air Temperature
Also how does pH affect cells??

Thanks!
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TheonlyMrsHolmes
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(Original post by bluemadhatter)
Humidity
Air Temperature
Also how does pH affect cells??

Thanks!
Pickle
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Omg I'm so useless XD Atleast I bumped up your thread though
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Elizabeth II
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(Original post by TheonlyMrsHolmes)
Pickle
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Omg I'm so useless XD Atleast I bumped up your thread though
I don't want to be around to see her react to this… :run:
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TheonlyMrsHolmes
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(Original post by iEthan)
I don't want to be around to see her react to this… :run:
:laugh: I'm a terrible person!
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bluemadhatter
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(Original post by TheonlyMrsHolmes)
Pickle
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Omg I'm so useless XD Atleast I bumped up your thread though
Wow are you not the most helpful person on this forum?

*ROUND OF APPLAUSE FOR YOU*
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I will spread jam all over you, YOU LITTLE CROISSANT
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TheonlyMrsHolmes
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(Original post by bluemadhatter)
Wow are you not the most helpful person on this forum?

*ROUND OF APPLAUSE FOR YOU*
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I will spread jam all over you, YOU LITTLE CROISSANT
I'm ready and waiting!
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username1221160
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humidity affects transpiration, stomatal regulation and others. Generally increased humidity leads to plant growth but will depend on the plant (e.g. plants adapted to desert conditions).
Air temp: impacts enzymatic activity, protein expression, transpiration, stomatal regulation, photosynthesis, photorespiration, etc. Plants grow well in optimal range (large variation based on plants), too low: decreased enzymatic activity, too high, wilting, dissection.

pH on cells: change it and it buggers up enzymatic activity and membrane biochemistry.
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jennypaul
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pH will slow down the enzymes of the plant cells if the soil pH is not the optimum. Some plants are adapted to acidic soils like Rhododendron, others to alkaline soil like Campanula and Clematis.So they will have different pH optima.

Temperature affects the rate of photosynthesis (light independent reactions only) as they are catalysed by enzymes, especially RuBISCo. The higher the temperature, the higher the rate of enzyme activity and thus the metabolic pathway. Up to the optimum, about 40C, After that any increase in temperature causes denaturation of enzymes and will slow growth.

Humidity will affect the rate of transpiration (water loss by evaporation from leaves). On a dry day, the rate of transpiration will be high and plants may wilt.
On a damp day, the rate of transpiration will be reduced, and plants will retain water and be able to hold up their leaves and photosythesise better, with a higher surface area.
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