Simple quiz

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Kysymys:

True/false question

The rate of respiration decreases with temperature.

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Kysymys:

Multiple choice question

The annual cycle of photosynthesis mainly follows

the changes in air temperature.

the changes in soil temperature.

the changes in CO2 concentration.

the changes in light.

Vastaus:

the changes in soil temperature.

the changes in CO2 concentration.

the changes in light.

the changes in air temperature.

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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

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:

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

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

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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:

Multiple choice question

Photoinhibition means the decrease in photosynthesis due to

exposure to shortage of soil moisture.

exposure to excess of light.

exposure to excess of CO2.

exposure to high temperature.

Vastaus:

exposure to excess of CO2

exposure to shortage of soil moisture

exposure to excess of light

exposure to high temperature

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Kysymys:

Multiple choice question

Photosynthesis of a tree canopy is driven or influenced by

atmospheric CO2.

air temperature (T).

soil moisture (REW).

air humidity (VPD).

the total leaf area (LAI).

photosynthetically active solar radiation (PAR).

Vastaus:

soil moisture (REW).

air temperature (T).

the total leaf area (LAI).

photosynthetically active solar radiation (PAR).

air humidity (VPD).

atmospheric CO2.

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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:

Multiple choice question

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

sun light.

soil heat.

atmospheric oxygen.

soil nutrients.

Vastaus:

atmospheric oxygen.

soil heat.

soil nutrients.

sun light.

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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

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

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

Atmospheric CO2

Solar radiation

Soil nutrients

Soil water

Vastaus:

Solar radiation

Soil nutrients

Soil water

Atmospheric CO2