1.

All vertebrates arechordates but all chordatesbut allchordates are not vertebrates.

Answer»

Solution :(1) All CHORDATES POSSESS notochord in some period of theirdevelopment. (2) All vertebrates also have notochord during embryonic life, which is later REPLACED by vertebral column. (3) THEREFORE all vertebrates are chordates. (4)But some chrodates like Urochordataand cephalochordata do not possess vertebral columnand hencethey are not vertebrates.


Discussion

No Comment Found