The housefly consumes only liquids and must transform other substances to liquid before digestion. Is this statement true or false?

The statement is true. Houseflies, like many other dipterans, have a specialized feeding mechanism that allows them to consume only liquids. They do not have the capacity to chew solid food. Instead, their feeding process involves secreting enzymes onto solid substances, which helps to break down the material into a liquid form. This process is essential for their digestion, as they can only absorb nutrients from liquid food. Therefore, the ability of houseflies to transform solid substances into liquids is crucial for their survival and feeding strategy.