Simple quiz

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Your score was: 60 %

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Score 0 of 1

Question:

Multiple choice question

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

Solar radiation

Soil nutrients

Atmospheric CO2

Soil water

Response:

Solar radiation

Atmospheric CO2

Soil nutrients

Soil water

Score 1 of 1

Question:

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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Response:

User answer
True
Score 1 of 1

Question:

True/false question

Plant respiration captures CO2.

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Response:

User answerFeedback
False

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

Score 1 of 1

Question:

True/false question

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

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Response:

User answer
True
Score 0 of 1

Question:

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.

Response:

exposure to excess of CO2

exposure to excess of light

exposure to high temperature

exposure to shortage of soil moisture

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Question:

True/false question

The rate of respiration decreases with temperature.

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Response:

User answer
True
Score 1 of 1

Question:

True/false question

Plants open its stomata to avoid losing too much water.

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Response:

User answerFeedback
False

Plant closes its stomata to avoid losing too much water.

Score 1 of 1

Question:

True/false question

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

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Response:

User answerFeedback
False

An increment in leaf area increases also the photosynthesis of a tree stand. However, the relationship is saturating.

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Question:

True/false question

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

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Response:

User answer
True
Score 1 of 1

Question:

True/false question

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

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Response:

User answer
True
Score 0 of 1

Question:

True/false question

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

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Response:

User answer
True
Score 1 of 1

Question:

True/false question

High soil moisture leads to decreased photosynthesis.

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Response:

User answerFeedback
False

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

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Question:

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.

Response:

the changes in CO2 concentration.

the changes in light.

the changes in air temperature.

the changes in soil temperature.

Score 1 of 1

Question:

Multiple choice question

As plants respire, they release

carbon dioxide.

oxygen.

Response:

carbon dioxide.

oxygen.

Score 0 of 1

Question:

Multiple choice question

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

atmospheric oxygen.

sun light.

soil heat.

soil nutrients.

Response:

soil nutrients.

sun light.

atmospheric oxygen.

soil heat.