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Kingdom Animalia Metazoa - Questions and Answers

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166. Which one of the following statements about all the four of Spongilla, Leach, Dolphin and Penguin is correct
A. Leach is fresh water while all others are marine
B. Spongilla has special collared cells choanocytes not found in the remaining three
C. All are bilaterally symmetrical
D. Penguin is homoiothermic while the remaining three are poikilothermic
Explanation:
167. Amphiblastula is larva of
A. Leucosolenia
B. Sycon
C. Hydra
D. Planaria
Explanation:
168. An opening serving both as mouth and anus is found in
A. Coelenterates and porifers
B. Coelenterates and aschelminthes
C. Coelenterates and annelids
D. Coelenterates and platyhelminthes
Explanation:
169. Sponge structure corresponding to mouth of other animals is
A. Incurrent canal
B. Ostium
C. Osculum
D. Excurrent canal
Explanation:
170. In porifera, skeleton forming cells are
A. Sclerocytes
B. Archaeocytes
C. Thesocytes
D. Amoebocytes
Explanation:
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