Question Detail
Question
Which of the following is NOT a primary defining feature of Phylum Chordata?
Correct Answer
Option D is the correct answer.
Detailed Explanation
The 'Phylum Chordata' section lists 'notochord', 'dorsal hollow nerve cord', 'pharyngeal slits', and 'post-anal tail' as defining features. An exoskeleton of chitin is characteristic of Arthropoda, not Chordata.
Hint
Consider the unique structural characteristics that distinguish chordates from other animal phyla.