alleryBalanoglossus is regarded as the connecting link between non-chordates and chordates. To which phylum does it belong?
AAnnelida
BEchinodermata
CChordata
DHemichordata
Answer & Solution
Correct answer: D. Hemichordata
1. Balanoglossus has a notochord only in the proboscis region.
2. This places it in phylum Hemichordata, the acorn worms.
3. Rule out Chordata: a full chordate has a notochord, not just in the proboscis.
_Source: Balbharati (Maharashtra Board) Class 10 Science & Technology Part 2, Ch 6 "Animal Classification", p.80_
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