Simple quiz

Käyttäjä sai pisteitä 9 / 15
Pisteet yhteensä: 60 %

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Tulos 1 / 1

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

The annual cycle of photosynthesis mainly follows

the changes in soil temperature.

the changes in air temperature.

the changes in light.

the changes in CO2 concentration.

Vastaus:

the changes in air temperature.

the changes in light.

the changes in CO2 concentration.

the changes in soil temperature.

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Kysymys:

Multiple choice question

Photosynthesis of a tree canopy is driven or influenced by

soil moisture (REW).

air temperature (T).

atmospheric CO2.

air humidity (VPD).

the total leaf area (LAI).

photosynthetically active solar radiation (PAR).

Vastaus:

air temperature (T).

the total leaf area (LAI).

air humidity (VPD).

soil moisture (REW).

atmospheric CO2.

photosynthetically active solar radiation (PAR).

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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

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

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

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Kysymys:

Multiple choice question

Photoinhibition means the decrease in photosynthesis due to

exposure to high temperature.

exposure to shortage of soil moisture.

exposure to excess of light.

exposure to excess of CO2.

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

When there is low soil moisture, plants close its stomata pores which then decreases photosynthesis.

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Vastaus:

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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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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:

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

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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Vastaus:

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Kysymys:

True/false question

High soil moisture leads to decreased photosynthesis.

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Vastaus:

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Oikein

In boreal upland forests, low soil moisture decreases the rate of photosynthesis.

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Kysymys:

Multiple choice question

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

atmospheric oxygen.

soil nutrients.

sun light.

soil heat.

Vastaus:

soil heat.

soil nutrients.

atmospheric oxygen.

sun light.