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Which among the following is incorrect about chordates?

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in Biology – Class 11 by (272k points)
Which among the following is incorrect about chordates?

(a) They must have notochord at every point of their life

(b) They have a post anal tail

(c) They have hollow dorsal nerve cord

(d) They have a ventral heart

The question was asked during an online exam.

My question is taken from Animal Kingdom topic in chapter Animal Kingdom of Biology – Class 11

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The correct choice is (a) They must have notochord at every point of their life

For explanation I would say: In chordates, notochord at some point of their life and may vanish after certain period of time. They have a post anal tail. They have a dorsal nerve cord. They have a ventral heart.

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