Simple quiz

You got 8 of 15 possible points.
Your score was: 53 %

Question Results

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 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:

Multiple choice question

Photoinhibition means the decrease in photosynthesis due to

exposure to excess of light.

exposure to high temperature.

exposure to excess of CO2.

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 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 1 of 1

Question:

Multiple choice question

To transform atmospheric CO2 into organic molecules, plants can use the energy from

sun light.

atmospheric oxygen.

soil nutrients.

soil heat.

Response:

sun light.

soil heat.

atmospheric oxygen.

soil nutrients.

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 0 of 1

Question:

True/false question

Transpiration decreases as air becomes drier.

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Response:

User answer
True
Score 0 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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Response:

User answer
False
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:

User answer
True
Score 0 of 1

Question:

Multiple choice question

As plants respire, they release

carbon dioxide.

oxygen.

Response:

carbon dioxide.

oxygen.

Feedback:

Photosynthesis releases oxygen whereas respiration releases CO2.

Score 0 of 1

Question:

Multiple choice question

Photosynthesis of a tree canopy is driven or influenced by

atmospheric CO2.

soil moisture (REW).

air humidity (VPD).

photosynthetically active solar radiation (PAR).

air temperature (T).

the total leaf area (LAI).

Response:

atmospheric CO2.

air temperature (T).

air humidity (VPD).

soil moisture (REW).

photosynthetically active solar radiation (PAR).

the total leaf area (LAI).

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 0 of 1

Question:

True/false question

The rate of respiration decreases with temperature.

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Response:

User answer
True
Score 0 of 1

Question:

Multiple choice question

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

Soil nutrients

Soil water

Atmospheric CO2

Solar radiation

Response:

Atmospheric CO2

Soil nutrients

Solar radiation

Soil water