A-level energy transfer & ecosystems

In which kingdom can you find saprobionts? Select ALL correct answer

• Fungi

• Plants

• Protoctics

• Bacteria

What can you use to estimate the chemical energy store in dry mass?

What is the correct equation for calculating the net production of consumers?

• N = I + (F+R)

• N = I - (F+R)

• N = R - (I+F)

• N = R + (I+F)

What is the name of the process of turning Ammonium into Nitrates?

• Ammonification

• Nitrogen fixation

• Denitrification

• Nitrification

Which of these is an oxidation reaction? select ALL correct answers

• Nitrogen gas to ammonium

• Ammonium to Nitrites

• Nitrites to Nitrates

• Nitrates to Nitrogen gas

Name the process of phosphate ions moving from waste and remains back into water in rivers/oceans.

• Depostiion

• Excretion

• Absorption

• Erosion

What do mycorrhizae gain from their mutualistic symbiosis with plants

• Carbohydrates

• Phosphate ions

• water

• Nitrates

What impact does nitrogen containing fertilisers NOT have on the environment

• Reduced species richness

• Leaching

• Eutrophication

• Reduced species diversity

Which of these does NOT contain phosphorus AND nitrogen

• DNA

• RNA

• ATP

• Phospholipid bilayer

When you increase the number of legume plants what would you expect to in field productivity?

• Increase in soil nitrates, Decrease in productivity

• Decrease in soil nitrates, Decrease in productivity

• Decrease in soil nitrates, Increase in productivity

• Increase in soil nitrates, Increase in productivity