Write the appropriate names of the trophic levels $Z$ and $X$ in the figure given below.

(N/A) In an ecological pyramid,the trophic levels are arranged from the base to the apex.
$1$. The base level consists of Producers.
$2$. The level above the producers is $X$,which represents the Primary consumers (herbivores).
$3$. The level above the primary consumers is the Secondary consumers.
$4$. The top level $Z$ represents the Tertiary consumers (carnivores).
Therefore,$X$ is Primary consumers and $Z$ is Tertiary consumers.