Advanced quiz

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Your score was: 47 %

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Score 0 of 1

Question:

Multiple choice question

Photosynthesis shuts down if the temperature of previous night has been lower than

0 celsius.

-5 celsius.

-10 celsius.

5 celsius.

Response:

0 celsius.

-10 celsius.

5 celsius.

-5 celsius.

Score 0 of 1

Question:

Multiple choice question

Respiration is a cellular process to obtain chemical energy from

the oxidation soil nutrients.

the oxidation of organic molecules.

the oxidation of plant tissues.

the oxidation of water.

Response:

the oxidation of plant tissues.

the oxidation of organic molecules.

the oxidation soil nutrients.

the oxidation of water.

Score 0 of 1

Question:

True/false question

The stage of acclimation at any given day depends on the temperatures experienced by the plant during the previous months.

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Response:

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True

The stage of acclimation at any given day depends on the temperatures experienced by the plant during the previous days.

Score 1 of 1

Question:

True/false question

High soil moisture leads to decreased photosynthesis.

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Response:

User answerFeedback
False

In boreal upland forests, low soil moisture decreases the rate of photosynthesis.

Score 1 of 1

Question:

True/false question

In trees, approximately half of the carbon bound in photosynthesis is used for construction of new biomass.

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Response:

User answer
True
Score 0 of 1

Question:

True/false question

Leaf area increases with stand age, resulting in a decreasing rate of photosynthesis in the stand.

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Response:

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True

An increment in leaf area increases also the photosynthesis of a tree stand. However, the relationship is saturating.

Score 1 of 1

Question:

True/false question

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.

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Response:

User answer
True
Score 1 of 1

Question:

True/false question

The air is moist if VPD (Vapour Pressure Deficit) is high.

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Response:

User answer
False
Score 1 of 1

Question:

Multiple choice question

Photoinhibition means the decrease in photosynthesis due to

exposure to excess of CO2.

exposure to high temperature.

exposure to excess of light.

exposure to shortage of soil moisture.

Response:

exposure to excess of light.

exposure to shortage of soil moisture.

exposure to high temperature.

exposure to excess of CO2.

Score 0 of 1

Question:

True/false question

Since stomata are the same pores through which carbon dioxide enters into the leaves, the result of their closure is a reduction in photosynthesis.

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Response:

User answer
False
Score 0 of 1

Question:

True/false question

REW stands for "Relative Extractable Water"

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Response:

User answer
False
Score 0 of 1

Question:

True/false question

As VPD increases, photosynthesis decreases due to the closure of the stomata.

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Response:

User answer
False
Score 1 of 1

Question:

Multiple choice question

Photosynthesis of a shoot can be measured by enclosing it within a chamber and following the change of

air temperature in this chamber.

carbon dioxide concentration in the air of this chamber.

water vapour concentration in the air of this chamber.

PAR radiation next to the chamber.

Response:

air temperature in this chamber.

carbon dioxide concentration in the air of this chamber.

PAR radiation next to the chamber.

water vapour concentration in the air of this chamber.

Score 0 of 1

Question:

Multiple choice question

"Stage of acclimation" refers to the seasonality of

the growth activity.

the flowering activity.

the litter fall activity.

the photosynthetic activity.

Response:

the photosynthetic activity.

the growth activity.

the flowering activity.

the litter fall activity.

Score 1 of 1

Question:

True/false question

Plants open its stomata to avoid losing too much water.

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Response:

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False

Plant closes its stomata to avoid losing too much water.