Simple quiz

You got 10 of 15 possible points.
Your score was: 67 %

Question Results

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 0 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
False
Score 1 of 1

Question:

True/false question

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

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Response:

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True
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:

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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:

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:

Multiple choice question

Photoinhibition means the decrease in photosynthesis due to

exposure to shortage of soil moisture.

exposure to high temperature.

exposure to excess of CO2.

exposure to excess of light.

Response:

exposure to shortage of soil moisture

exposure to excess of light

exposure to excess of CO2

exposure to high temperature

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 1 of 1

Question:

Multiple choice question

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

Soil nutrients

Solar radiation

Soil water

Atmospheric CO2

Response:

Soil water

Atmospheric CO2

Soil nutrients

Solar radiation

Score 0 of 1

Question:

True/false question

The rate of respiration decreases with temperature.

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Response:

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True
Score 1 of 1

Question:

Multiple choice question

Photosynthesis of a tree canopy is driven or influenced by

air humidity (VPD).

air temperature (T).

the total leaf area (LAI).

soil moisture (REW).

photosynthetically active solar radiation (PAR).

atmospheric CO2.

Response:

atmospheric CO2.

photosynthetically active solar radiation (PAR).

the total leaf area (LAI).

soil moisture (REW).

air temperature (T).

air humidity (VPD).

Score 1 of 1

Question:

True/false question

Plant respiration captures CO2.

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Response:

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False

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

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

High soil moisture leads to decreased photosynthesis.

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Response:

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False

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

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 CO2 concentration.

the changes in air temperature.

the changes in light.

the changes in soil temperature.