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Food production

Food production

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Question 11

A commercial aquaculture enterprise cultivates channel catfish (Ictalurus punctatus) in large earthen ponds.

a.

Describe two ways the operators can maintain high levels of dissolved oxygen and prevent the pond water from turning stagnant or anoxic.

[2]
b.

Explain two distinct strategies the operators can implement to minimise the loss of catfish to predators.

[2]
c.

Suggest two management practices to prevent the transmission and outbreak of infectious diseases within the catfish population.

[2]
d.

Explain how the feeding regime should be designed to support rapid growth of the catfish without causing eutrophication and water pollution.

[2]
Markscheme

Food production Questions

  1. IGCSE
  2. /Biology
  3. /Food production

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.

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