Simple quiz

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

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 high temperature.

exposure to excess of CO2.

Response:

exposure to high temperature

exposure to excess of light

exposure to excess of CO2

exposure to shortage of soil moisture

Score 0 of 1

Question:

Multiple choice question

Photosynthesis of a tree canopy is driven or influenced by

air humidity (VPD).

atmospheric CO2.

air temperature (T).

soil moisture (REW).

photosynthetically active solar radiation (PAR).

the total leaf area (LAI).

Response:

air temperature (T).

the total leaf area (LAI).

photosynthetically active solar radiation (PAR).

air humidity (VPD).

atmospheric CO2.

soil moisture (REW).

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

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
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:

True/false question

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

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Response:

User answer
True
Score 0 of 1

Question:

True/false question

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

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Response:

User answer
False
Score 1 of 1

Question:

Multiple choice question

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

atmospheric oxygen.

soil heat.

sun light.

soil nutrients.

Response:

soil heat.

sun light.

soil nutrients.

atmospheric oxygen.

Score 0 of 1
(skipped)

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
Score 1 of 1

Question:

True/false question

High soil moisture leads to decreased photosynthesis.

Answer hidden

Response:

User answerFeedback
False

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 water

Solar radiation

Atmospheric CO2

Soil nutrients

Response:

Atmospheric CO2

Soil nutrients

Soil water

Solar radiation

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

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

The rate of respiration decreases with temperature.

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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.