Question Video: Determining Agricultural Applications of Radioactivity | Nagwa Question Video: Determining Agricultural Applications of Radioactivity | Nagwa

Question Video: Determining Agricultural Applications of Radioactivity Science • Third Year of Preparatory School

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Which of the following does not correctly describe why plants that have pests or harmful bacteria on them are exposed to nuclear radiation in agricultural applications? [A] To mutate the plants [B] To show the positions of animal pests and bacteria on the crops [C] To kill animal pests and bacteria on the plants?

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Video Transcript

Which of the following does not correctly describe why plants that have pests or harmful bacteria on them are exposed to nuclear radiation in agricultural applications? Is it (A) to mutate the plants, (B) to show the positions of animal pests and bacteria on the crops, or (C) to kill animal pests and bacteria on the plants?

This question asks us which option is not an application of nuclear radiation in agriculture. To decide this, let’s remember that nuclear radiation is used in agriculture to increase how much food can be produced and how long that food can be kept before it must be eaten. Nuclear radiation is used to destroy insect pests. This can be done by killing the eggs of insects or stopping insects from breeding. Harmful bacteria on plants can also be killed by nuclear radiation.

Nuclear radiation is also used to alter the DNA of plant cells in order to obtain nutritious or easier-to-grow products. We must reject option (A) and option (C), as these do correctly describe how nuclear radiation is used in agriculture. However, nuclear radiation is not used to show the position of animal pests or bacteria on crops. This is because knowing the positions of pests and bacteria does not help in growing more food or in preserving food.

We can see then that option (B) is correct. We do not use nuclear radiation to show the positions of pests and bacteria on crops.

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