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Chordata Protochordata - Questions and Answers

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81. The animal having notochord throughout life is
A. Fish
B. Amphioxus
C. Snakes
D. Birds
Explanation:
82. Notochord occurs in the embryonic stage in
A. Some chordates
B. All chordates
C. All vertebrates
D. Some vertebrates
Explanation:
83. In which group, the notochord is limited to only anterior part or proboscis
A. Hemichordata
B. Urochordata
C. Cephalochordata
D. Mammalia
Explanation:
84. Which is an exclusive chordate character
A. True coelom
B. Pharyngeal gill slits
C. Bilateral symmetry
D. Triploblastic
Explanation:
85. Tunicin is
A. Lipopolysaccharide
B. Cellulose-like polysaccharide
C. Non-cellulosic polysaccharide
D. Proteinaceous
Explanation:
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