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.
You will be redirected in
3 sec
