Give scientific reasons : Cockroaches are harmful for human life.
Give scientific reasons : Cockroaches are harmful for human life.
$\Rightarrow$ Many species of cockroaches are wild and are of no economic importance. A few species thrive in and around human habitat. They are pests because they destroy food and contaminate it with their smelly excreta. They can transmit a variety of bacterial diseases by contaminating food material.
Similar Questions
It does not take part in excretion in cockroach
It does not take part in excretion in cockroach
Explain nervous system of cockroach.
Explain nervous system of cockroach.
Which of the following statement(s) is/are correct regarding respiratory system of cockroach ?
($i$) It consists of a network of trachea, that open through $12$ pairs of small holes called spiracles present on the lateral side of the body.
($ii$) Thin branching tubes carry oxygen from the air to all the parts.
($iii$) The opening of the spiracles is regulated by sphincters.
($iv$) Exchange of gases take place at the tracheoles by diffusion.
Which of the following statement(s) is/are correct regarding respiratory system of cockroach ?
($i$) It consists of a network of trachea, that open through $12$ pairs of small holes called spiracles present on the lateral side of the body.
($ii$) Thin branching tubes carry oxygen from the air to all the parts.
($iii$) The opening of the spiracles is regulated by sphincters.
($iv$) Exchange of gases take place at the tracheoles by diffusion.
Which one does not occur in Cockroach leg
Which one does not occur in Cockroach leg
Which type of mouthparts is present on the lateral side of the pre-oral cavity in cockroach?
Which type of mouthparts is present on the lateral side of the pre-oral cavity in cockroach?