Question

How are ants able to move in a straight line to collect food and how do they recognize each
other?
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Answer 1

Explanation:

When an ant finds food,it picks a small piece of it and while returning it leaves chemical scents called pheromones along the trail. Each colony has a unique set of pheromones. ... So that other ants behinds it can follow the smell and return to the colony. As the ants follow the smell they tend to walk in a straight line.

Answer 2

Answer:

When an ant finds food,it picks a small piece of it and while returning it leaves chemical scents called pheromones along the trail. Each colony has a unique set of pheromones. This trail of pheromones helps other ants of the colony to reach the source of food. ... The taste buds can identify this trail which they follow.