alleryIn a non-chordate, the nerve cord (when present) is described as being located and structured how?
AVentral, solid and paired
BDorsal, hollow and single
CVentral, hollow and single
DDorsal, solid and paired
Answer & Solution
Correct answer: A. Ventral, solid and paired
1. Recall the defining features of non-chordates.
2. Their nerve cord, if present, lies on the ventral side and is solid and paired.
3. Rule out 'dorsal, hollow and single': that describes the chordate nerve cord.
4. Position (ventral) and structure (solid, paired) must both match for non-chordates.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 6 "Animal Classification", p.71_
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