To solve the problem, we need to identify the correct term used for **interconnected food chains** in an ecosystem.
1. Understanding Food Chains and Interconnection:
A food chain shows a linear sequence of organisms through which nutrients and energy pass as one organism eats another.
However, in nature, organisms often feed on more than one type of food, leading to multiple interconnected food chains.
2. Correct Term:
The network of these interconnected food chains is called a food web. It provides a more realistic representation of energy flow in an ecosystem.
Final Answer:
Interconnected food chains are called a \({\text{Food web}} \).