Simple quiz

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Your score was: 60 %

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Score 0 of 1
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Question:

True/false question

In general, the more carbon dioxide that is available to the plant, the faster the rate of photosynthesis - if other factors are favourable.

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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

In some part of the stems, some photosynthesis may also occur.

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True
Score 1 of 1

Question:

Multiple choice question

As plants respire, they release

oxygen.

carbon dioxide.

Response:

oxygen.

carbon dioxide.

Score 1 of 1

Question:

Multiple choice question

Photoinhibition means the decrease in photosynthesis due to

exposure to shortage of soil moisture.

exposure to excess of light.

exposure to excess of CO2.

exposure to high temperature.

Response:

exposure to high temperature

exposure to excess of CO2

exposure to shortage of soil moisture

exposure to excess of light

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Question:

True/false question

Almost half of the total biomass of a tree may be allocated to the roots.

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Question:

True/false question

Plant respiration captures CO2.

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True

Unlike photosynhesis, plant respiration captures atmospheric oxygen and releases carbon dioxide.

Score 1 of 1

Question:

True/false question

Carbon becomes locked as part of the accumulating plant biomass as plants grow.

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True
Score 1 of 1

Question:

True/false question

Early spring is a tricky time for plants due to the combination of sunny but still quite cold days.

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True
Score 1 of 1

Question:

True/false question

De-hardening in spring involves gradual re-hydration of the cells, recovery of photosynthetic capacity and a tight control of water loss.

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True
Score 0 of 1

Question:

True/false question

The rate of respiration decreases with temperature.

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True
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Question:

True/false question

High soil moisture leads to decreased photosynthesis.

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

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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.

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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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True
Score 0 of 1

Question:

Multiple choice question

Photosynthesis of a tree canopy is driven or influenced by

air temperature (T).

the total leaf area (LAI).

soil moisture (REW).

air humidity (VPD).

atmospheric CO2.

photosynthetically active solar radiation (PAR).

Response:

the total leaf area (LAI).

soil moisture (REW).

atmospheric CO2.

air humidity (VPD).

air temperature (T).

photosynthetically active solar radiation (PAR).