HardZoologyAnimal classification
+4 / -1
Match the following: 
A
a-4, b-3, c-2, d-1
B
a-3, b-4, c-1, d-2
C
a-3, b-4, c-2, d-1
D
a-4, b-3, c-1, d-2
Explanation
Ascaris is a roundworm (pseudocoelomate), Sponges (Porifera) are mostly asymmetrical, Leeches (Annelids) show metameric segmentation, and diploblastic animals lack a mesoderm layer.
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Which of the following groups have 2 germinal layers (Diploblastic)?
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