CAIE IGCSE Biology 20.1.2 Large-scale Crop Monocultures

Practise discussing higher crop yield and efficient farming alongside disease risk, habitat loss and reduced biodiversity.

Exam points

define a monoculture as growing a single crop species over an area
state advantages such as increased yield and efficient use of specialist machinery
explain disease vulnerability, habitat loss and reduced species or genetic diversity

[Maximum number: 2]

Fig. 4.1 is a flow chart showing some of the processes that occur in a biofuels power plant.

Fig. 4.1

Farmers grow giant reed plants as monocultures.

Describe the disadvantages of growing giant reed plants to provide biomass for the production of biofuels.

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20.1.2—Advantages and disadvantages question 1