Simple quiz

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Kysymys:

Multiple choice question

Photoinhibition means the decrease in photosynthesis due to

exposure to excess of CO2.

exposure to high temperature.

exposure to shortage of soil moisture.

exposure to excess of light.

Vastaus:

exposure to excess of light.

exposure to excess of CO2.

exposure to high temperature.

exposure to shortage of soil moisture.

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Kysymys:

Multiple choice question

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

Soil nutrients

Atmospheric CO2

Solar radiation

Soil water

Vastaus:

Atmospheric CO2

Soil nutrients

Soil water

Solar radiation

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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

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

Transpiration decreases as air becomes drier.

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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

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

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

As plants respire, they release

carbon dioxide.

oxygen.

Vastaus:

carbon dioxide.

oxygen.

Tulos 0 / 1
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Kysymys:

True/false question

High soil moisture leads to decreased photosynthesis.

Answer hidden

Vastaus:

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

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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 air temperature.

the changes in soil temperature.

the changes in CO2 concentration.

Tulos 0 / 1
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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:

True/false question

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

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Kysymys:

True/false question

The rate of respiration decreases with temperature.

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Vastaus:

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