Simple quiz

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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

De-hardening in spring involves gradual re-hydration of the cells, recovery of photosynthetic capacity and a tight control of water loss.

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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

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

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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

Plant respiration captures CO2.

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Vastaus:

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Väärin

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

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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

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

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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

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

Soil nutrients

Soil water

Solar radiation

Vastaus:

Soil water

Soil nutrients

Atmospheric CO2

Solar radiation

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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:

Multiple choice question

Photosynthesis of a tree canopy is driven or influenced by

air temperature (T).

air humidity (VPD).

photosynthetically active solar radiation (PAR).

soil moisture (REW).

atmospheric CO2.

the total leaf area (LAI).

Vastaus:

atmospheric CO2.

air temperature (T).

the total leaf area (LAI).

soil moisture (REW).

air humidity (VPD).

photosynthetically active solar radiation (PAR).

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Kysymys:

Multiple choice question

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

soil heat.

atmospheric oxygen.

sun light.

soil nutrients.

Vastaus:

soil heat.

atmospheric oxygen.

soil nutrients.

sun light.