Why is a cricket multicellular

Cricket is said to be a multicellular organism and not a unicellular organism.

Explanation:
The cell is said to be the functional and structural unit of every living organism. In this, some organisms possess a single cell while others consist of multicellular or many cells.
Unicellular are the organisms that are known to possess only a single cell. Whereas multicellular organisms consist of many cells.
In the unicellular organisms single cell is responsible for the total function of that organism whereas in multicellular animal each group of cells possesses a different function as they do the specific action for the body.
Cricket is said to be the insect similar to a grasshopper that belongs to the Arthropoda family.