Does annelida have spiral or radial cleavage?
Annelids have spiral cleavage. Annelids are all spiral cleavers, meaning that each embryonic cleavage occurs at progressive 90 degree angles with respect to the animal- vegetal axis.
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About Annelids
Annelids are a phylum of segmented ringed worms that includes earthworms, leeches and ragworms.
About Degree
A degree is an angular measurement that equals 1/360 of a full rotation of a circle.
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