Simple quiz

You got 9 of 15 possible points.
Your score was: 60 %

Question Results

Score 0 of 1

Question:

True/false question

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

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Response:

User answer
False
Score 0 of 1

Question:

Multiple choice question

The annual cycle of photosynthesis mainly follows

the changes in soil temperature.

the changes in CO2 concentration.

the changes in light.

the changes in air temperature.

Response:

the changes in air temperature

the changes in light

the changes in soil temperature

the changes in CO2 concentration

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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Response:

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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:

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

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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Response:

User answer
True
Score 0 of 1

Question:

Multiple choice question

Photoinhibition means the decrease in photosynthesis due to

exposure to excess of light.

exposure to shortage of soil moisture.

exposure to excess of CO2.

exposure to high temperature.

Response:

exposure to excess of CO2

exposure to high temperature

exposure to shortage of soil moisture

exposure to excess of light

Score 0 of 1

Question:

True/false question

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

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Response:

User answer
True
Score 1 of 1

Question:

True/false question

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

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Response:

User answer
True
Score 1 of 1

Question:

True/false question

Plant respiration captures CO2.

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Response:

User answerFeedback
False

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

Score 0 of 1

Question:

Multiple choice question

Photosynthesis of a tree canopy is driven or influenced by

photosynthetically active solar radiation (PAR).

air humidity (VPD).

air temperature (T).

soil moisture (REW).

the total leaf area (LAI).

atmospheric CO2.

Response:

atmospheric CO2

the total leaf area (LAI)

air humidity (VPD)

air temperature (T)

photosynthetically active solar radiation (PAR)

soil moisture (REW)

Score 1 of 1

Question:

True/false question

A complex microbiota lives belowground, releasing carbon dioxide to the soil.

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Response:

User answer
True
Score 0 of 1

Question:

True/false question

High soil moisture leads to decreased photosynthesis.

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Response:

User answerFeedback
True

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

Score 1 of 1

Question:

Multiple choice question

What is the source of carbon that is assimilated in photosynthesis?

Soil nutrients

Solar radiation

Atmospheric CO2

Soil water

Response:

Solar radiation

Soil nutrients

Soil water

Atmospheric CO2

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.

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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Response:

User answer
True