Question 4 (of 33) E) save & Exit ll submit value: 3.03 points n contrast to the

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Question 4 (of 33) E) save & Exit ll submit value: 3.03 points n contrast to the urochordates the cephalochordates have some characteristics that would appear a tiny bit more familiar to those who were expecting a chordate to look something like a vertebrate. Fin familiar characteristics in the list below and select them by clicking the box next to each correct ce. Swimming (though weakly) adult Pharyngeal slits in the adult that look something like the gill slits of some fishes Ventral, dorsal, and tail fins Absence of a heart

Explanation / Answer

Ans. cephalochordates looking as fish like marine animals,belong to the family of chordata as they posses five charateristicsof chordates from larval stage to adulthood.The characters which are similiar to vertebrates include presence of hollow dorsal nerve chord,pharyngeal gill slits and a notochord which is then eventually replaced into vertebrae in vertibrates.

So option 2 is correct in which pharyngeal gill slits of adults look like gill slits of some fishes.

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