Select the correct statements with references to chordates.
A. Presence of a mid-dorsal, solid and double nerve cord.
B. Presence of post anal tail.
C. Presence of paired pharyngeal gill slits.
D. Presence of dorsal heart.
E. Triploblastic pseudocoelomate animals.
Choose the correct answer from the options given below.

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B, D and E only

C, D and E only

A, C and D only

B and C only

answer is C.

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Detailed Solution

Only B and C are correct while A, D and E are incorrect.
A. The nerve cord of chordates is middorsal, hollow and single.
B. Post anal tail is found in most of the chordates.
C. All the chordates possess paired pharyngeal gill-slits, at least at some stage of their life history.
D. The heart is ventral to gut in chordates.
E. Chordates are triploblastic and eucoelomate animals. Pseudocoelomates are included under phylum Aschelminthes.

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