Zoology-Non-Chordates
NEET Zoology Non-Chordates MCQ Question
Type: MCQ-conceptual-Medium-Class 11
If a scientist is studying a newly discovered non-chordate organism with a body cavity lined by mesoderm, which phylum could this organism belong to?
A
Annelida
B
Platyhelminthes
C
Aschelminthes
D
Porifera
Correct Answer
Option A
Detailed Explanation
Annelids are coelomates, meaning they have a body cavity lined by mesoderm. Platyhelminthes are acoelomates, Aschelminthes are pseudocoelomates, and Porifera have a cellular level of organization without a true coelom.
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