Simple quiz

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Kysymys:

Multiple choice question

The annual cycle of photosynthesis mainly follows

the changes in CO2 concentration.

the changes in soil temperature.

the changes in light.

the changes in air temperature.

Vastaus:

the changes in air temperature.

the changes in CO2 concentration.

the changes in light.

the changes in soil temperature.

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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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Kysymys:

True/false question

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

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Vastaus:

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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

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

Plants open its stomata to avoid losing too much water.

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Vastaus:

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Plant closes its stomata to avoid losing too much water.

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Kysymys:

Multiple choice question

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

sun light.

soil nutrients.

atmospheric oxygen.

soil heat.

Vastaus:

soil heat.

soil nutrients.

atmospheric oxygen.

sun light.

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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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Vastaus:

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Kysymys:

True/false question

Plant respiration captures CO2.

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Vastaus:

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

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Kysymys:

True/false question

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

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Vastaus:

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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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Vastaus:

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Kysymys:

Multiple choice question

As plants respire, they release

carbon dioxide.

oxygen.

Vastaus:

oxygen.

carbon dioxide.

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Kysymys:

Multiple choice question

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

Soil water

Solar radiation

Atmospheric CO2

Soil nutrients

Vastaus:

Soil water

Soil nutrients

Solar radiation

Atmospheric CO2

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Kysymys:

True/false question

The rate of respiration decreases with temperature.

Answer hidden

Vastaus:

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Kysymys:

True/false question

Transpiration decreases as air becomes drier.

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Kysymys:

Multiple choice question

Photosynthesis of a tree canopy is driven or influenced by

soil moisture (REW).

air temperature (T).

the total leaf area (LAI).

air humidity (VPD).

atmospheric CO2.

photosynthetically active solar radiation (PAR).

Vastaus:

air humidity (VPD).

the total leaf area (LAI).

air temperature (T).

photosynthetically active solar radiation (PAR).

soil moisture (REW).

atmospheric CO2.