alleryThe organ level of organisation begins with the phylum:
ACtenophora
BPlatyhelminthes
CPorifera group
DCoelenterata
Answer & Solution
Correct answer: B. Platyhelminthes
1. Above tissues, groups of tissues form organs.
2. That step appears first in the flatworms.
3. So the organ level begins with Platyhelminthes.
_Source: syllabus Biology, Chapter 4, Animal Kingdom._
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