Question

The diagram below represents a certain organism collected by a student at the sea shore.

1. Name the class to which the organism belongs. 
2. Give three reasons for your answer in (1) above.

Answer 1

1. Crustacean
2.  
   1. Two body parts where head and thorax fuse to form cephalothorax.
   2. Two pairs of antennae; have compound eyes.
   3. Have five pairs of limbs/ 5-20 pairs of limbs rej. Legs.
   4. Have external gills. (first three)