Simple quiz

Käyttäjä sai pisteitä 10 / 15
Pisteet yhteensä: 67 %

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Tulos 0 / 1

Kysymys:

Multiple choice question

The annual cycle of photosynthesis mainly follows

the changes in soil temperature.

the changes in CO2 concentration.

the changes in light.

the changes in air temperature.

Vastaus:

the changes in soil temperature.

the changes in light.

the changes in CO2 concentration.

the changes in air temperature.

Tulos 1 / 1

Kysymys:

Multiple choice question

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

atmospheric oxygen.

soil nutrients.

soil heat.

sun light.

Vastaus:

atmospheric oxygen.

soil nutrients.

sun light.

soil heat.

Tulos 1 / 1

Kysymys:

True/false question

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

Answer hidden

Vastaus:

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Oikein
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Kysymys:

True/false question

Plant respiration captures CO2.

Answer hidden

Vastaus:

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

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Kysymys:

Multiple choice question

Photoinhibition means the decrease in photosynthesis due to

exposure to excess of CO2.

exposure to shortage of soil moisture.

exposure to high temperature.

exposure to excess of light.

Vastaus:

exposure to excess of light.

exposure to excess of CO2.

exposure to shortage of soil moisture.

exposure to high temperature.

Tulos 1 / 1

Kysymys:

True/false question

At low air humidity, a plant closes its stomata to prevent transpiration. The action also decreases photosynthesis

Answer hidden

Vastaus:

Käyttäjän vastaus
Oikein
Tulos 1 / 1

Kysymys:

True/false question

Leaf area increases with stand age, resulting in a decreasing rate of photosynthesis in the stand.

Answer hidden

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

Almost half of the total biomass of a tree may be allocated to the roots.

Answer hidden

Vastaus:

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Tulos 0 / 1

Kysymys:

Multiple choice question

Photosynthesis of a tree canopy is driven or influenced by

photosynthetically active solar radiation (PAR).

air temperature (T).

the total leaf area (LAI).

air humidity (VPD).

atmospheric CO2.

soil moisture (REW).

Vastaus:

photosynthetically active solar radiation (PAR).

atmospheric CO2.

soil moisture (REW).

air temperature (T).

the total leaf area (LAI).

air humidity (VPD).

Tulos 1 / 1

Kysymys:

True/false question

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

Answer hidden

Vastaus:

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Tulos 1 / 1

Kysymys:

True/false question

Plants open its stomata to avoid losing too much water.

Answer hidden

Vastaus:

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Plant closes its stomata to avoid losing too much water.

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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.

Tulos 0 / 1

Kysymys:

True/false question

Early spring is a tricky time for plants due to the combination of sunny but still quite cold days.

Answer hidden

Vastaus:

Käyttäjän vastaus
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Tulos 1 / 1

Kysymys:

True/false question

A complex microbiota lives belowground, releasing carbon dioxide to the soil.

Answer hidden

Vastaus:

Käyttäjän vastaus
Oikein
Tulos 0 / 1

Kysymys:

True/false question

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

Answer hidden

Vastaus:

Käyttäjän vastaus
Väärin