Select the correct statements with reference to chordates. A. Presence of a mid-dorsal, solid and double nerve cord. B. Presence of closed circulatory system. 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:
A, C and D only
B and C only
B, D and E only
C, D and E only
Chordates are characterized by the presence of a notochord, a dorsal hollow nerve cord, and paired pharyngeal gill slits at some stage of their life cycle. They also possess a closed circulatory system. The nerve cord in chordates is dorsal, hollow, and single, not solid and double. The heart is ventral, not dorsal. They are triploblastic and coelomate, not pseudocoelomate. Thus, statements B and C are correct.
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