Which one of the following is one of the path | vedclass

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(A) The correct path for air entry in $Periplaneta$ $americana$ is: Spiracle $\rightarrow$ Trachea $\rightarrow$ Tracheoles $\rightarrow$ Cells.In coc

Vedclass · Accepted Answer

Spiracle in metathorax,trachea,tracheoles,oxygen diffuses into cells

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(A) The correct path for air entry in $Periplaneta$ $americana$ is: Spiracle $\rightarrow$ Trachea $\rightarrow$ Tracheoles $\rightarrow$ Cells.In cockroaches,the respiratory system consists of a network of air tubes called tracheae,which open to the exterior through $10$ pairs of small holes known as spiracles.These spiracles are segmentally arranged on the lateral sides of the body.The tracheae branch into finer tubes called tracheoles,which carry oxygen directly to the tissues.Option $A$ correctly describes the sequence: Spiracle in metathorax (as part of the thoracic spiracles),trachea,tracheoles,and finally oxygen diffusion into cells.

Which one of the following is one of the paths followed by air or $O_2$ during respiration in the adult male $Periplaneta$ $americana$ as it enters the animal body?

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