Simple quiz

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Kysymys:

Multiple choice question

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

atmospheric oxygen.

soil nutrients.

sun light.

soil heat.

Vastaus:

sun light.

atmospheric oxygen.

soil heat.

soil nutrients.

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Kysymys:

True/false question

High soil moisture leads to decreased photosynthesis.

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

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Kysymys:

Multiple choice question

Photosynthesis of a tree canopy is driven or influenced by

air temperature (T).

photosynthetically active solar radiation (PAR).

atmospheric CO2.

soil moisture (REW).

air humidity (VPD).

the total leaf area (LAI).

Vastaus:

photosynthetically active solar radiation (PAR).

soil moisture (REW).

air temperature (T).

the total leaf area (LAI).

air humidity (VPD).

atmospheric CO2.

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Kysymys:

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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Kysymys:

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.

Vastaus:

exposure to high temperature

exposure to excess of CO2

exposure to excess of light

exposure to shortage of soil moisture

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Kysymys:

True/false question

Transpiration decreases as air becomes drier.

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Kysymys:

True/false question

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

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Kysymys:

True/false question

Leaf area increases with stand age, resulting in a decreasing rate of photosynthesis in the stand.

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An increment in leaf area increases also the photosynthesis of a tree stand. However, the relationship is saturating.

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Kysymys:

True/false question

When there is low soil moisture, plants close its stomata pores which then decreases photosynthesis.

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Kysymys:

True/false question

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

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Kysymys:

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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Kysymys:

True/false question

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

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Kysymys:

Multiple choice question

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

Soil water

Atmospheric CO2

Soil nutrients

Solar radiation

Vastaus:

Atmospheric CO2

Soil water

Solar radiation

Soil nutrients

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Kysymys:

True/false question

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

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Kysymys:

True/false question

Almost half of the total biomass of a tree may be allocated to the roots.

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