Ctenidia is found in the order
A. Trichoptera
B. Siphonoptera
C. Strepsitera
D. Psocoptera
Answer: Option B
Solution(By Examveda Team)
Ctenidia is found in the order Siphonoptera.The order Siphonaptera, includes 2,500 species of small flightless insects that live as external parasites of mammals and birds.
A ctenidium is shaped like a comb or a feather, with a central part from which many filaments or plate-like structures protrude, lined up in a row. It hangs into the mantle cavity and increases the area available for gas exchange.
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