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Q.

Select the correct difference between nonchordates and chordates.

 NonchordatesChordates
1.Ventral nerve cordDorsal nerve cord
2.Tail is post-analTail is pre-anal
3.Heart is myogenicHeart is neurogenic
4.Heart is dorsalHeart is ventral

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a

1

b

2

c

3

d

4

answer is D.

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Detailed Solution

The heart of chordates is ventral to the gut. In nonchordates, the heart (if present) is dorsal to the gut. The heart of most nonchordates is neurogenic, while that of chordates is myogenic.

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Select the correct difference between nonchordates and chordates. NonchordatesChordates1.Ventral nerve cordDorsal nerve cord2.Tail is post-analTail is pre-anal3.Heart is myogenicHeart is neurogenic4.Heart is dorsalHeart is ventral