Animal Kingdom Question 996
Question: Animal which passes water current through its body for food is
[DPMT 1986]
Options:
A) Star fish
B) Sponge
C) Hydra
D) Earthworm
Show Answer
Answer:
Correct Answer: B
Solution:
Sponges belong to phylum Porifera and have a water transport or canal system.
Water enters through minute pores (ostia) in the body wall into a central cavity, spongocoel, from where it goes out through the osculum.
This pathway of water transport is helpful in food gathering, respiratory exchange and removal of waste.
BETA
