"Stage of acclimation" refers to the seasonality of
the photosynthetic activity.
the flowering activity.
the growth activity.
the litter fall activity.
When there is low soil moisture, plants close its stomata pores which then decreases photosynthesis.
Photosynthesis shuts down if the temperature of previous night has been lower than
Låga växter, mikroberna i marken och markens funktioner i allmänhet drar under vintern nytta av.
Välj ett alternative.
snöns isolerande inverkan
den ringa mängden solljus
trädens långsammare aktivitet
de låga temperaturerna
Respiration is a cellular process to obtain chemical energy from
the oxidation of organic molecules.
the oxidation of water.
the oxidation soil nutrients.
the oxidation of plant tissues.
The effect of light on photosynthesis has a clear saturating pattern: more light results in more photosynthesis but eventually leaves cannot take full advantage of all the extra light.
In trees, approximately half of the carbon bound in photosynthesis is used for construction of new biomass.
Photosynthesis of a shoot can be measured by enclosing it within a chamber and following the change of
water vapour concentration in the air of this chamber.
air temperature in this chamber.
PAR radiation next to the chamber.
carbon dioxide concentration in the air of this chamber.
Since stomata are the same pores through which carbon dioxide enters into the leaves, the result of their closure is a reduction in photosynthesis.
The air is moist if VPD (Vapour Pressure Deficit) is high.
Då VPD ökar blir assimilationen långsammare eftersom växten tillsluter sina klyvöppningar.
As VPD increases, photosynthesis decreases due to the closure of the stomata.
Photoinhibition means the decrease in photosynthesis due to
exposure to high temperature.
exposure to shortage of soil moisture.
exposure to excess of CO2.
exposure to excess of light.
The stage of acclimation at any given day depends on the temperatures experienced by the plant during the previous months.
The stage of acclimation at any given day depends on the temperatures experienced by the plant during the previous days.
Plants open its stomata to avoid losing too much water.
Plant closes its stomata to avoid losing too much water.