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Animal Kingdom question

2023 · Q78
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Animal Kingdom question

2023 · Q78

NEETBiologyAnimal KingdomMCQ+4 / −1

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:

  1. A
    B and C only
  2. B
    B, D and E only
  3. C
    C, D and E only
  4. D
    A, C and D only
View written solutionFree

Correct answer: A

Chordates are defined by having certain specific anatomical features at some point during their development. The correct attributes of chordates are:



1. Presence of a dorsal, hollow nerve cord (not a mid-dorsal, solid and double nerve cord as mentioned in statement A)

2. Presence of a closed circulatory system.

3. Presence of paired pharyngeal gill slits.

4. Presence of a post-anal tail.

5. Presence of a notochord.



Regarding the other statements :



- The heart of chordates is ventral, not dorsal (as in statement D).

- Chordates are triploblastic and coelomate, not pseudocoelomate (as in statement E).



So, based on these facts, the correct answer is :



Option A : B and C only.

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