Shrimp farms provide an important source of protein for human consumption.
State one way in which interspecific predation can be reduced in open-air shrimp ponds.
Chemical pesticides or disinfectants are sometimes added to shrimp ponds to control disease-carrying vectors, such as wild crabs. Explain the advantages and disadvantages of using these chemicals in shrimp farming.
The stocking density (number of shrimp larvae per square metre) in a rearing tank can affect their growth. Design an investigation to determine the effect of stocking density on the growth of tiger prawns. Your answer should include experimental details and be written in full sentences.
74 exam-style questions on Edexcel IGCSE Biology Food production. Each one has a worked solution and a mark scheme showing where the marks go.