Q5 / 200 · NEET 2023 (All India) · Botany

Select the correct statement related to chordates.

A. Presence of a mid-dorsal, solid and double nerve cord.

B. Presence of closed circulatory system.

C. Presence of paired pharyngeal gillislits.

D. Presence of dorsal heart

E. Triploblastic pseudocoelomate animals.

Choose the correct answer from the options given below:

  • A
    B, D and E only
  • B
    C, D and E only
  • C
    A, C and D only
  • Correct answer
    D
    B and C only

Solution

The main chordate characters are:

  • Dorsal hollow nerve cord.
  • Presence of notochord.
  • Presence of paired pharyngeal gill slits.
  • Bilateral symmetry with triploblastic, coelomate with organ-system level of organisation.
  • Presence of post anal tail
  • Presence of ventral heart, with closed circulatory system.

Hence, the correct answer is option: 'D'.

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