Simple quiz

Käyttäjä sai pisteitä 12 / 15
Pisteet yhteensä: 80 %

Well done!

Vastaukset

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

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 1 / 1

Kysymys:

Multiple choice question

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

Soil water

Solar radiation

Soil nutrients

Atmospheric CO2

Vastaus:

Solar radiation

Atmospheric CO2

Soil nutrients

Soil water

Tulos 0 / 1

Kysymys:

True/false question

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

Answer hidden

Vastaus:

Käyttäjän vastaus
Oikein
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

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

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

soil heat.

soil nutrients.

sun light.

atmospheric oxygen.

Vastaus:

sun light.

atmospheric oxygen.

soil nutrients.

soil heat.

Tulos 1 / 1

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.

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 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

Plant respiration captures CO2.

Answer hidden

Vastaus:

Käyttäjän vastausFeedback
Väärin

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

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

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

Photoinhibition means the decrease in photosynthesis due to

exposure to high temperature.

exposure to shortage of soil moisture.

exposure to excess of light.

exposure to excess of CO2.

Vastaus:

exposure to excess of light.

exposure to shortage of soil moisture.

exposure to excess of CO2.

exposure to high temperature.

Tulos 1 / 1

Kysymys:

True/false question

Plants open its stomata to avoid losing too much water.

Answer hidden

Vastaus:

Käyttäjän vastausFeedback
Väärin

Plant closes its stomata to avoid losing too much water.