Simple quiz

Käyttäjä sai pisteitä 10 / 15
Pisteet yhteensä: 67 %

Vastaukset

Tulos 1 / 1

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 CO2

exposure to shortage of soil moisture

exposure to excess of light

exposure to high temperature

Tulos 1 / 1

Kysymys:

True/false question

The rate of respiration decreases with temperature.

Answer hidden

Vastaus:

Käyttäjän vastaus
Väärin
Tulos 1 / 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
Oikein
Tulos 1 / 1

Kysymys:

Multiple choice question

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

Atmospheric CO2

Soil water

Solar radiation

Soil nutrients

Vastaus:

Soil water

Solar radiation

Soil nutrients

Atmospheric CO2

Tulos 1 / 1

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.

Answer hidden

Vastaus:

Käyttäjän vastaus
Oikein
Tulos 0 / 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
Väärin
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

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

Answer hidden

Vastaus:

Käyttäjän vastausFeedback
Oikein

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

Tulos 0 / 1

Kysymys:

Multiple choice question

The annual cycle of photosynthesis mainly follows

the changes in light.

the changes in soil temperature.

the changes in CO2 concentration.

the changes in air temperature.

Vastaus:

the changes in soil temperature.

the changes in CO2 concentration.

the changes in light.

the changes in air temperature.

Tulos 1 / 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
Oikein
Tulos 1 / 1

Kysymys:

True/false question

High soil moisture leads to decreased photosynthesis.

Answer hidden

Vastaus:

Käyttäjän vastausFeedback
Väärin

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

Tulos 0 / 1

Kysymys:

True/false question

Transpiration decreases as air becomes drier.

Answer hidden

Vastaus:

Käyttäjän vastaus
Oikein
Tulos 1 / 1

Kysymys:

True/false question

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

Answer hidden

Vastaus:

Käyttäjän vastaus
Oikein
Tulos 1 / 1

Kysymys:

Multiple choice question

As plants respire, they release

oxygen.

carbon dioxide.

Vastaus:

carbon dioxide.

oxygen.

Tulos 0 / 1

Kysymys:

True/false question

Plants open its stomata to avoid losing too much water.

Answer hidden

Vastaus:

Käyttäjän vastausFeedback
Oikein

Plant closes its stomata to avoid losing too much water.