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Besides the basic chordate characters, vertebrates also have
(a)Paired appendages that may be fins or limbs
(b)A ventral muscular heart with 2, 3, or 4 chambers
(c)Kidneys for excretion and osmoregulation
(d)All of the above

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Important Questions on Animal Kingdom
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Which of the following statement is incorrect?

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The members of Chondrichthyes have to swim constantly to avoid sinking due to

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Internal fertilization and viviparity are the characteristics of class

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The character common to both cartilaginous and bony fishes is the presence of

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Lateral line organ occurs in

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In sharks, the mouth and nares are

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Which of the following fish is famous for migration?
