Question

Tracheae of cockroach and mammals are similar in having

• A. Paired nature
• B. Noncollapsible walls
• C. Ciliated inner lining
• D. Origin from head

Answer 1

The correct option is B Noncollapsible walls

Tracheae of cockroach and mammals

are similar in having

B) Noncollapsible walls

Tracheae acts as passage of air during

respiration in both cockroach and

mammals. In cockroaches, the cuticular

lining is spirally thickened forming

taenidia which prevents the tracheal

tubes from collapsing in mammals,

cartilaginous rings supporting the walls

of the tracheae prevent their collapsing