Animal Kingdom Question 367

Question: Non-chordates have

[BCECE 2005]

Options:

A) Notocord

B) Dorsal tubular nerve chord

C) Pharyngeal gills cleft

D) Absence of hepatic portal system

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Answer:

Correct Answer: D

Solution:

Non-chordates does not have a notochord. Nerve cord is ganglionated, double ventral and solid in them. Pharyngeal gill slits and the hepatic portal system is also absent.

So, the correct answer is option D.