Give general information about cockroach.

(N/A) $\rightarrow$ Cockroaches are brown or black-bodied animals.
$\rightarrow$ Cockroaches are included in the class $Insecta$ of the phylum $Arthropoda$. Bright yellow,red,and green-coloured cockroaches have also been reported in tropical regions.
$\rightarrow$ Their size ranges from $1/4$ inches to $3$ inches. They possess antennae,legs,and a flat extension of the upper body wall that conceals the head.
$\rightarrow$ They are nocturnal omnivores that live in damp places throughout the world.
$\rightarrow$ They have become residents of human homes and thus are serious pests and vectors of several diseases.