Correct path of air during respiration of Periplaneta is ____________.

Mouth, bronchial tube, trachea, oxygen enters cellsdiffuses into cells

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Spiracles in prothorax, tracheoles, trachea, oxygen diffuses into cells

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Hypopharynx, mouth, pharynx, trachea, tissues

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Spiracles in metathorax, trachea, tracheoles, oxygen

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Solution

The correct option is D Spiracles in metathorax, trachea, tracheoles, oxygen
In the cockroach, the respiration process occurs through the spiracles. Spiracles are the small opening on the sides of its body. Thin branching tubes mean tracheal tubes subdivided into tracheoles, carry oxygen from the air to all the parts. Also, this opening of the spiracles is regulated by the sphincters. The exchange of the gases is taking place at the tracheoles by diffusion. So the correct answer Spiracles in metathorax, trachea, tracheoles, oxygen. Another path of air during the respiration of Periplaneta is invalid. The correct option is D.

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Question 15
Which is the correct sequence of air passage during inhalation?

(a) $N o s t r i l s \to l a r y n x \to p h a r y n x \to t r a c h e a \to l u n g s$
(b) $N a s a l p a s s a g e \to t r a c h e a \to p h a r y n x \to l a r y n x \to a l v e o l i$
(c) $L a r y n x \to n o s t r i l s \to p h a r y n x \to l u n g s$
(d) $N o s t r i l s \to p h a r y n x \to l a r y n x \to t r a c h e a \to a l v e o l i$

Question 15
Which is the correct sequence of air passage during inhalation?

(a) $N o s t r i l s \to l a r y n x \to p h a r y n x \to t r a c h e a \to l u n g s$
(b) $N a s a l p a s s a g e \to t r a c h e a \to p h a r y n x \to l a r y n x \to a l v e o l i$
(c) $L a r y n x \to n o s t r i l s \to p h a r y n x \to l u n g s$
(d) $N o s t r i l s \to p h a r y n x \to l a r y n x \to t r a c h e a \to a l v e o l i$

Q. In which of the following group of animals, the spiracle, trachea and tracheoles are associated with the respiratory system?

Q. Where in the respiratory system does oxygen from the air breathed in pass into the blood?

(a) trachea
(b) bronchi
(c) bronchioles
(d) alveoli

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