MCQOPTIONS
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| 1. |
Hemichordates have now been placed with the non-chordates, close to echinoderms, because true |
| A. | notochord is absent. |
| B. | pharyngeal gill-slits are lacking. |
| C. | dorsal nerve cord is absent. |
| D. | eart is lacking. |
| Answer» B. pharyngeal gill-slits are lacking. | |