Which of the following coelenterates or cnidarians are eaten as delicacy?
a) hydra and obelia
b) jelly fish
c) sea anemone
d) corals
Explanation: some of them are poisonous and cause serious health threat for divers and swimmers
Coral reefs are of …….basic types.
a) two
b) three
c) four
d) five
Explanation: 1. Fringing, 2. Plate form, 3. Barrier and 4. Great barrier reefs
Glade Bilateria:
The animals of grade bilateria are……..
a) diploblastic
b) triploblastic
c) both a and b
d) none of them
Explanation: they are bilateral symmetrical i.e. can be cut in two equal half in only plane
Which of the following phyla are included in grade bilateria of subkingdom eumetazoa?
a) platyhelminthes and aschelminthes
b) mollusca and annelida
c) arthropoda, echinodermata and chordata
d) all of these
Which of the following are the first triploblatic metazoa and are acoelomates?
a) platyhelminthese
b) achelminthes
c) annelids
d) cnidarians
