Simple quiz

You got 7 of 15 possible points.
Your score was: 47 %

Question Results

Score 0 of 1

Question:

Multiple choice question

The annual cycle of photosynthesis mainly follows

the changes in air temperature.

the changes in soil temperature.

the changes in CO2 concentration.

the changes in light.

Response:

the changes in light.

the changes in soil temperature.

the changes in air temperature.

the changes in CO2 concentration.

Score 1 of 1

Question:

Multiple choice question

Photoinhibition means the decrease in photosynthesis due to

exposure to high temperature.

exposure to excess of light.

exposure to excess of CO2.

exposure to shortage of soil moisture.

Response:

exposure to shortage of soil moisture.

exposure to excess of light.

exposure to high temperature.

exposure to excess of CO2.

Score 0 of 1

Question:

Multiple choice question

Photosynthesis of a tree canopy is driven or influenced by

air temperature (T).

the total leaf area (LAI).

atmospheric CO2.

soil moisture (REW).

photosynthetically active solar radiation (PAR).

air humidity (VPD).

Response:

air humidity (VPD).

atmospheric CO2.

photosynthetically active solar radiation (PAR).

the total leaf area (LAI).

soil moisture (REW).

air temperature (T).

Score 0 of 1

Question:

True/false question

The rate of respiration decreases with temperature.

Answer hidden

Response:

User answer
True
Score 0 of 1

Question:

True/false question

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

Answer hidden

Response:

User answerFeedback
True

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

Score 0 of 1

Question:

True/false question

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

Answer hidden

Response:

User answer
False
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:

True/false question

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

Answer hidden

Response:

User answer
True
Score 1 of 1

Question:

True/false question

High soil moisture leads to decreased photosynthesis.

Answer hidden

Response:

User answerFeedback
False

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

Score 1 of 1

Question:

True/false question

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

Answer hidden

Response:

User answer
True
Score 1 of 1

Question:

Multiple choice question

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

Soil nutrients

Soil water

Atmospheric CO2

Solar radiation

Response:

Soil nutrients

Atmospheric CO2

Soil water

Solar radiation

Score 1 of 1

Question:

True/false question

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

Answer hidden

Response:

User answer
True
Score 0 of 1

Question:

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.

Answer hidden

Response:

User answer
False
Score 1 of 1

Question:

True/false question

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

Answer hidden

Response:

User answer
True
Score 0 of 1

Question:

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.

Answer hidden

Response:

User answer
False