Simple quiz

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Kysymys:

True/false question

Transpiration decreases as air becomes drier.

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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:

Multiple choice question

Photosynthesis of a tree canopy is driven or influenced by

atmospheric CO2.

photosynthetically active solar radiation (PAR).

air humidity (VPD).

air temperature (T).

the total leaf area (LAI).

soil moisture (REW).

Vastaus:

soil moisture (REW).

the total leaf area (LAI).

air humidity (VPD).

atmospheric CO2.

air temperature (T).

photosynthetically active solar radiation (PAR).

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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

Plant respiration captures CO2.

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

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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

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:

Multiple choice question

Photoinhibition means the decrease in photosynthesis due to

exposure to excess of CO2.

exposure to excess of light.

exposure to shortage of soil moisture.

exposure to high temperature.

Vastaus:

exposure to high temperature

exposure to shortage of soil moisture

exposure to excess of light

exposure to excess of CO2

Tulos 0 / 1

Kysymys:

Multiple choice question

The annual cycle of photosynthesis mainly follows

the changes in light.

the changes in CO2 concentration.

the changes in soil temperature.

the changes in air temperature.

Vastaus:

the changes in light.

the changes in air temperature.

the changes in CO2 concentration.

the changes in soil temperature.

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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

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:

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:

True/false question

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

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Kysymys:

Multiple choice question

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

Soil water

Soil nutrients

Atmospheric CO2

Solar radiation

Vastaus:

Soil nutrients

Soil water

Solar radiation

Atmospheric CO2

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Kysymys:

True/false question

The rate of respiration decreases with temperature.

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