A) Crushing its crystals and then sucking the power
B) Crushing and eating
C) Sucking
D) Dissolving in saliva and sucking
Correct Answer: D
Solution :
If food material of housefly is solid, such as a sugar crystal, the fly first pours a little saliva or regurgitates droplets of liquid from its crop to liquefy it and then sucks the liquid which fills the tubular pseudo-trachaeae by capillary action.You need to login to perform this action.
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