COXA-

• RENAL APERTURE-OPENING OF EXCRETORY ORGAN PRESENT.

ENDOPODITE-

• SENSORY FEELERS ARE PRESENT.

EXOPODITE-

• ALSO CALLED SQUAMA.
• SERVES AS BALANCER DURING SWIMMING.

THUS ANTENNA ARE EXCRETORY,SENSORY AND BALANCING IN FUNCTION.

COXA-HEAD-

• Molar processes(5 to 6 dental plates are present).
• incisor process(3 teeth are present).

EXOPODITE IS ABSENT

• Mandibles are strong calcified(containing calcium salts)due to their masticatory function.
• They function as biting jaw of prawn.

• Free borders of  Coxa and basis project inward as jaws.

ENDOPODITE-

Curved process bifurcated at the apex.

EXOPODITE IS ABSENT.

Maxillulae help in food manipulation i.e.the ability to control all kinds of food.

COXA-

• It is small.

BASIS-

• It forms bifurcated gnathobase.

EXOPODITE-

• Forms large fan shaped baler containing setae.
• movement of baler creates water current passing over the gills.

THUS MAXILLA HELPS IN RESPIRATION AND FOOD MANIPULATION.