Question
Download Solution PDFWhich is not a feature of non-chordates?
This question was previously asked in
AIIMS BSc NURSING 2023 Memory-Based Paper
Answer (Detailed Solution Below)
Option 4 : Central nervous system is dorsal
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AIIMS BSc NURSING 2024 Memory-Based Paper
100 Qs.
100 Marks
120 Mins
Detailed Solution
Download Solution PDFThe correct answer is the Central nervous system is dorsal
Explanation:
The features of non-chordates among the given statements are:
- The central nervous system is ventral.
- Gill slits are absent.
- Heart is dorsal
Comparison of Chordates and Non-chordates:-
| Chordates | Non- chordates |
| Notochord is present | Notochord absent |
| Central nervous system is dorsal, hollow and single. |
Central nervous system is ventral, solid and double. |
| Pharynx perforated by gill slits. | Gill slits are absent. |
| Heart is ventral. | Heart is dorsal (if present). |
| A post-anal part (tail) is present. | A post-anal part (tail) is absent |
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