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Your score was: 47 %

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Score 1 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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False

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

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.

PAR radiation next to the chamber.

carbon dioxide concentration in the air of this chamber.

water vapour concentration in the air of this chamber.

Response:

water vapour concentration in the air of this chamber.

PAR radiation next to the chamber.

air temperature in this chamber.

carbon dioxide concentration in the air of this chamber.

Score 1 of 1

Question:

True/false question

REW stands for "Relative Extractable Water"

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True
Score 1 of 1

Question:

True/false question

When there is low soil moisture, plants close its stomata pores which then decreases photosynthesis.

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Response:

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True
Score 1 of 1

Question:

True/false question

Plants open its stomata to avoid losing too much water.

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False

Plant closes its stomata to avoid losing too much water.

Score 1 of 1

Question:

True/false question

High soil moisture leads to decreased photosynthesis.

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False

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

Score 1 of 1

Question:

True/false question

Eftersom koldioxid kommer in i växten genom klyvöppningarna går assimilationen långsammare då klyvöppningarna tillsluts.

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True
Score 0 of 1
(skipped)

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

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Question:

Multiple choice question

Låga växter, mikroberna i marken och markens funktioner i allmänhet drar under vintern nytta av.
Välj ett alternative.

trädens långsammare aktivitet

de låga temperaturerna

den ringa mängden solljus

snöns isolerande inverkan

Response:

snöns isolerande inverkan

trädens långsammare aktivitet

den ringa mängden solljus

de låga temperaturerna

Score 0 of 1
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Question:

Multiple choice question

Photoinhibition means the decrease in photosynthesis due to

exposure to high temperature.

exposure to excess of CO2.

exposure to excess of light.

exposure to shortage of soil moisture.

Response:

exposure to excess of light.

exposure to excess of CO2.

exposure to high temperature.

exposure to shortage of soil moisture.

Score 0 of 1
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Question:

Multiple choice question

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

-10 celsius.

-5 celsius.

0 celsius.

5 celsius.

Response:

-5 celsius.

0 celsius.

-10 celsius.

5 celsius.

Score 0 of 1
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Question:

True/false question

Då VPD ökar blir assimilationen långsammare eftersom växten tillsluter sina klyvöppningar.

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Score 0 of 1
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Question:

Multiple choice question

Respiration is a cellular process to obtain chemical energy from

the oxidation soil nutrients.

the oxidation of water.

the oxidation of organic molecules.

the oxidation of plant tissues.

Response:

the oxidation of organic molecules.

the oxidation soil nutrients.

the oxidation of water.

the oxidation of plant tissues.

Score 0 of 1
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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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Score 0 of 1
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Question:

True/false question

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

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