Chordata Protochordata - Questions & Answers | Exam2Win

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66. Three fundamental characters of all chordates are

A. Dorsal tubular nerve cord, diaphragm, notochord

B. Notochord, diaphragm, gill slits

C. Gill slits, diaphragm, dorsal tubular nerve cord

D. Notochord, gill slits, dorsal tubular nerve cord

Explanation:

67. Only the tail portion contains notochord in

A. Chordata

B. Caphalochordata

C. Hemichordata

D. Urochordata

Explanation:

68. Phosphorescence occurs in

A. Salpa

B. Pyrosoma

C. Petromyzon

D. Rana

Explanation:

69. All chordates at one or other stage, possess

A. Two pairs of pentadactyl limbs

B. Movable jaw

C. Vertebral column

D. Pharyngeal gill slits

Explanation:

70. Tunicates are

A. Mixotrophic

B. Parasitic

C. Macrophagous

D. Ciliary feeders

Explanation:

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