Simple quiz

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Your score was: 93 %

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Question Results

Score 1 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 excess of light.

exposure to shortage of soil moisture.

Score 1 of 1

Question:

True/false question

At low air humidity, a plant closes its stomata to prevent transpiration. The action also decreases photosynthesis

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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 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:

User answerFeedback
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

Plant respiration captures CO2.

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Response:

User answerFeedback
False

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

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

The rate of respiration decreases with temperature.

Answer hidden

Response:

User answer
False
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:

Multiple choice question

Photosynthesis of a tree canopy is driven or influenced by

photosynthetically active solar radiation (PAR).

the total leaf area (LAI).

air humidity (VPD).

atmospheric CO2.

air temperature (T).

soil moisture (REW).

Response:

atmospheric CO2.

air temperature (T).

soil moisture (REW).

photosynthetically active solar radiation (PAR).

air humidity (VPD).

the total leaf area (LAI).

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.

Answer hidden

Response:

User answer
True
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

Transpiration decreases as air becomes drier.

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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 1 of 1

Question:

True/false question

Carbon capture is performed by the green parts of plants via photosynthesis.

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Response:

User answer
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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Response:

User answer
True