Simple quiz

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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:

Multiple choice question

As plants respire, they release

oxygen.

carbon dioxide.

Vastaus:

carbon dioxide.

oxygen.

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Kysymys:

True/false question

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

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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:

Multiple choice question

Photosynthesis of a tree canopy is driven or influenced by

photosynthetically active solar radiation (PAR).

the total leaf area (LAI).

air temperature (T).

air humidity (VPD).

soil moisture (REW).

atmospheric CO2.

Vastaus:

air humidity (VPD).

air temperature (T).

the total leaf area (LAI).

soil moisture (REW).

atmospheric CO2.

photosynthetically active solar radiation (PAR).

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Kysymys:

Multiple choice question

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

Soil nutrients

Atmospheric CO2

Soil water

Solar radiation

Vastaus:

Soil nutrients

Atmospheric CO2

Soil water

Solar radiation

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Kysymys:

True/false question

High soil moisture leads to decreased photosynthesis.

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Vastaus:

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

Early spring is a tricky time for plants due to the combination of sunny but still quite cold days.

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Kysymys:

Multiple choice question

The annual cycle of photosynthesis mainly follows

the changes in air temperature.

the changes in light.

the changes in CO2 concentration.

the changes in soil temperature.

Vastaus:

the changes in light.

the changes in soil temperature.

the changes in air temperature.

the changes in CO2 concentration.

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Kysymys:

True/false question

A complex microbiota lives belowground, releasing carbon dioxide to the soil.

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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

Transpiration decreases as air becomes drier.

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Kysymys:

True/false question

The rate of respiration decreases with temperature.

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Kysymys:

Multiple choice question

Photoinhibition means the decrease in photosynthesis due to

exposure to high temperature.

exposure to excess of light.

exposure to shortage of soil moisture.

exposure to excess of CO2.

Vastaus:

exposure to excess of light.

exposure to excess of CO2.

exposure to high temperature.

exposure to shortage of soil moisture.