In Phylum Porifera, the beating of the flagellum draws food to the outside of the mucus-covered _____ of the collar.
A. Villi
B. Microvilli
C. Food vacuole
D. None of these
Answer:B
In Phylum Porifera, the beating of the flagellum draws food to the outside of the mucus-covered _____ of the collar.
A. Villi B. Microvilli C. Food vacuole D. None of these