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Coelenterata Ctenophora - Questions and Answers

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81. Hydra cut into two pieces will result in
A. Growth without mouth and basal disc
B. Growth of mouth and disc according to their position in the parent
C. Growth of mouth and disc at any end
D. No regeneration is possible
Explanation:
82. Characteristic feature of coelenterata is
A. All are marine
B. Presence of tentacles around mouth
C. Polyp
D. Gastrovascular cavity
Explanation:
83. A member of scyphozoan is
A. Silver Fish
B. Jelly Fish
C. Cuttle Fish
D. Cat Fish
Explanation:
84. Ephyra is young stage of
A. Obelia
B. Sea Anemone
C. Physalia
D. Aurelia
Explanation:
85. Which is correct about nematocyst in Hydra
A. It is re-used
B. Ejection is conditioned reflex
C. Ejection occurs in response to contact and pierces the prey
D. Prevents coming in contact with other Hydra
Explanation:
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