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Coelenterata Ctenophora - Questions and Answers

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286. Chitinous covering or perisarc is present in
A. Obelia
B. Hydra
C. Aurelia
D. Physalia
Explanation:
287. Skeleton present in coelenterates is
A. Endoskeleton
B. Exoskeleton
C. Both A and B
D. None of the above
Explanation:
288. Nematoblasts in Hydra are commonly of
A. 2 types
B. 3 types
C. Four types
D. None of the above
Explanation:
289. Gas gland occurs in
A. Gorgonia
B. Physalia
C. Pennatula
D. Red Coral
Explanation:
290. Epitheliomuscular cells of epidermis of Hydra form
A. Circular muscles
B. Oblique muscles
C. Longitudinal muscles
D. None of the above
Explanation:
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