Phylum Arthropoda - Questions & Answers | Exam2Win

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166. Cephalopoda is characterized by

A. Coming together of head and foot

B. Enlargement of tentacles

C. Presence of siphon

D. All the above

Explanation:

167. A structure peculiar to Nautilus is

A. Siphuncle

B. External shell

C. Spirally coiled shell

D. Nocturnal nature

Explanation:

168. Human Louse is

A. Lepisma

B. Pediculus

C. Cimex

D. Xenopsylla

Explanation:

169. Fresh Water Mussel has

A. A radula for feeding

B. Inhalent siphon

C. Exhalent siphon

D. Both B and C

Explanation:

170. Nacre or mother of pearl is secreted by mantle’s

A. Cubical epithelial cells

B. Columnar epithelial cells

C. Columnar endothelial cells

D. Cubical endothelial cells

Explanation: