The biological relationships between species can have both positive and negative consequences. One relationship that has good results is mutualism, a relationship between species in which the organisms benefit each other. For example, ants and aphids (plant lice) have established a beneficial interaction. Ants defend and nurture the development of aphid colonies on a plant. In return, the aphids provide a sugary substance to feed their protectors.
Aphids need protection from predators, such as butterfly larvae. Ants pick up eggs and nymphs in their jaws and carry them into their anthills, out of
Generally, aphids form colonies that live on a single plant. They usually place themselves on the underside of a leaf, where the aphids can reach the leaf's veins. The veins carry sugars from the leaves to the remainder of the plant, and the aphids use this flow of sugar as a source of food.
Extracts nutrients from the leave's ribs with its stylet
Sugars are the product that links these insects.
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