- Fused head and thorax i.e. cephalothorax which is often protected by carapace
- Gaseous exchange is through gills;
- Five or more pairs of limbs or five twenty pairs of limbs
- Two pairs of antennae
- A pair of compound eyes
- Three pairs of mouth parts (consisting of labial pals)
johnmulu answered the question on May 8, 2017 at 05:11
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