Animal Kingdom Question 508
Question: Housefly feeds on sugar by [RPMT 1985; CPMT 1990]
Options:
A) Crushing its crystals and then sucking the power
B) Crushing and eating
C) Sucking
D) Dissolving in saliva and sucking
Show Answer
Answer:
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.
BETA
