How do most insects respire? (a) Through skin (b) Through gills (c) By lungs (d) By tracheal system

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shabnam praween · Answer 1 · 2018-06-04T00:55:42+0000

(d) Most insects respire through tracheal system that lies on a network of small tubes that channel O₂ directly to the different part of the body. The tracheal system is composed of chitin-ringed tubes called trachea that connect directly to the air through opening in the body wall called spiracles.