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21% of IItians & 23% of AIIMS delhi doctors are from Sri Chaitanya institute !!
An Intiative by Sri Chaitanya
a
Has spiracles whose openings is regulated by the sphincters.
b
Involves exchange of gases by active transport.
c
Has spiracles located dorsally
d
Consists of network of trachea that opens through 20 pairs of spiracles.
answer is C.
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