CAIE IGCSE Biology 21.3.4 Advantages & Disadvantages of GM Crops

Practise evaluating genetically modified soya, maize and rice through yield, pesticide use, nutrition, cost and ecological risk.

Exam points

explain benefits such as higher yield, improved nutrition and reduced pesticide use
explain risks from gene transfer, resistant weeds, biodiversity loss, seed cost or unknown effects
balance advantages and disadvantages in the named crop context rather than listing generic claims

[Maximum number: 4]

Bacteria are useful in biotechnology and genetic engineering.
Fig. 6.1 shows a photomicrograph of a bacterium.

Fig. 6.1

Crop plants can also be genetically modified.

Describe the advantages of genetically modifying crops.

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