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Per NCERT §1.2.6, what is the PHYLUM (or DIVISION for plants)?
AA single species
BA subfamily
CThe category that contains RELATED CLASSES — for example, fishes + amphibians + reptiles + birds + mammals all share notochord and dorsal hollow neural system, so they are in phylum CHORDATA
DAn individual
Answer & Solution
Correct answer: C. The category that contains RELATED CLASSES — for example, fishes + amphibians + reptiles + birds + mammals all share notochord and dorsal hollow neural system, so they are in phylum CHORDATA
Per NCERT §1.2.6, phylum = related classes. Chordata united by notochord + dorsal hollow neural cord.
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