Question

Short notes on periplaneta respiratory system

Answer 1

the blood of cockroaches is colourless and t cannot carry oxygen to different tissue dueto the absence of respiratory pigment .therefore a tracheal sysrem is developed to carry the air directly to the tissue . the respiratory system of cockroaches consist of a) stigma. b) trachea c) tracheoles

Answer 2

Blood of cockroach is colorless and it can't carry oxygen to various tissues due to absence of respiratory pigment.  

A tracheal system is developed to carry the air directly to the tissues.  

Respiratory system of cockroach consists of

1.Stigmata,

2. trachea,

3. tracheoles.

Cockroaches are normal household pests and act as scavenger.  

Word "cockroach" has initiated from the name of Spanish fruit ‘cucaracha’ having disaggreable taste.