Simple quiz

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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

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 soil temperature.

the changes in light.

the changes in air temperature.

the changes in CO2 concentration.

Vastaus:

the changes in light.

the changes in soil temperature.

the changes in CO2 concentration.

the changes in air temperature.

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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

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

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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 CO2.

exposure to high temperature.

exposure to excess of light.

Vastaus:

exposure to high temperature

exposure to excess of light

exposure to shortage of soil moisture

exposure to excess of CO2

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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:

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

Transpiration decreases as air becomes drier.

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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:

Multiple choice question

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

Soil water

Atmospheric CO2

Soil nutrients

Solar radiation

Vastaus:

Solar radiation

Atmospheric CO2

Soil water

Soil nutrients

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Kysymys:

Multiple choice question

Photosynthesis of a tree canopy is driven or influenced by

photosynthetically active solar radiation (PAR).

soil moisture (REW).

atmospheric CO2.

air temperature (T).

air humidity (VPD).

the total leaf area (LAI).

Vastaus:

the total leaf area (LAI).

soil moisture (REW).

air temperature (T).

atmospheric CO2.

air humidity (VPD).

photosynthetically active solar radiation (PAR).

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Kysymys:

True/false question

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

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Kysymys:

Multiple choice question

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

soil nutrients.

soil heat.

atmospheric oxygen.

sun light.

Vastaus:

soil nutrients.

soil heat.

atmospheric oxygen.

sun light.

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Kysymys:

Multiple choice question

As plants respire, they release

oxygen.

carbon dioxide.

Vastaus:

oxygen.

carbon dioxide.