The diagram shows a food chain. $$ \text { rose bush → aphids } \text { → ladybirds } \text { → } \text { spiders } $$ A disease reduced the number of ladybirds. What would be the likely effect of this on the numbers of aphids and spiders? | Option | aphids | spiders |
Explanation
The reduction in ladybird numbers would lead to an increase in aphid numbers, as there would be fewer predators to control their population. This, in turn, would lead to an increase in spider numbers, as there would be more aphids for them to prey on.
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