Q. Read the given statements and select the correct option.
Statement 1 : Urochordates and cephalochordates are often called invertebrate chordates.
Statement 2 : They are a connecting link between the invertebrates and the chordates.

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Solution:

Urochordates and cephalochordates are marine without a vertebral column. They are often referred to as invertebrate chordates or protochordates. They are regarded to be early, primitive, or first chordates closely allied with the ancestral chordate stock. They are not a connecting link between the invertebrates and the chordates.