Dead moss lies on the soil. After several months, most of the moss has decayed. A young fern grows nearby.
Name one group of microorganisms that acts as a decomposer of the moss.
Complete each statement.
Carbon from the moss is returned to the atmosphere when decomposers carry out __________ (1).
The carbon enters the atmosphere as __________ (2).
The decomposers release mineral ions from the moss into the soil. Give the name of the cells in the fern roots that absorb the mineral ions.
83 exam-style questions on AQA GCSE Biology 7.2 Organisation of an ecosystem, covering 7.2.1 Levels of organisation, 7.2.2 How materials are cycled, 7.2.3 Decomposition, and 7.2.4 Impact of environmental change (HT only). Each one has a worked solution and a mark scheme showing where the marks go.