A.Sponges
B.Metridium
C.Star-fish
D.None of these
Related Mcqs:
- Ring-canal is found in:
- Ring-canal is found in the:
- Which of the following sets of animals is odd:
- Which of the following marine fishes are considered direct descendents of fresh water ancestors??
- Which of the following is odd one:
- Fertilization is external and occurring in sea water in:
- The course of water current given below is found in thich of the following canal systems: Water ? ostia ? incurrent canals ? prosophyles ? radial canals ? apopyles ? spongocoel ? osculum ? out
- In which of the canal system the following course of water current is found water enters ? dermal ostia ? subdermal spsces ? branching incurrent canals ? prosopyles ? Ilagellated chambers ? apopyles ? excurrent canals ? large channel ? osculum ? out:
- Pest of pearl-osyster is:
- Which of these has no skeleton whatsoever:
