Simple quiz

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

Question Results

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 0 of 1

Question:

Multiple choice question

Photosynthesis of a tree canopy is driven or influenced by

atmospheric CO2.

soil moisture (REW).

photosynthetically active solar radiation (PAR).

air temperature (T).

air humidity (VPD).

the total leaf area (LAI).

Response:

air humidity (VPD).

soil moisture (REW).

atmospheric CO2.

air temperature (T).

photosynthetically active solar radiation (PAR).

the total leaf area (LAI).

Score 1 of 1

Question:

Multiple choice question

As plants respire, they release

oxygen.

carbon dioxide.

Response:

carbon dioxide.

oxygen.

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:

Multiple choice question

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

Atmospheric CO2

Soil nutrients

Solar radiation

Soil water

Response:

Atmospheric CO2

Solar radiation

Soil nutrients

Soil water

Score 0 of 1

Question:

True/false question

Plants open its stomata to avoid losing too much water.

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Response:

User answerFeedback
True

Plant closes its stomata to avoid losing too much water.

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

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:

Multiple choice question

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

sun light.

soil nutrients.

atmospheric oxygen.

soil heat.

Response:

sun light.

soil nutrients.

soil heat.

atmospheric oxygen.

Score 1 of 1

Question:

Multiple choice question

Photoinhibition means the decrease in photosynthesis due to

exposure to shortage of soil moisture.

exposure to excess of light.

exposure to high temperature.

exposure to excess of CO2.

Response:

exposure to high temperature

exposure to excess of CO2

exposure to shortage of soil moisture

exposure to excess of light

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 0 of 1

Question:

True/false question

Transpiration decreases as air becomes drier.

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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
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