Question

Differentiate between Arthropoda and Mollusca.

Answer 1

Arthropoda	Mollusca
Body is segmented into head, thorax, and abdomen	Body is not segmented
Have jointed appendages	Do not have jointed appendages
Have a Chitinous exoskeleton	Have a calcareous exoskeleton (if present)
Shed the chitinous exoskeleton at regular intervals	Do not shed the chitinous exoskeleton at regular intervals
Respire using gills, book gills, book lungs, and tracheal system.	Respire using ctenidia.
Antennae, simple and compound eyes, and Statocysts are sensory Organs	Sensory tentacles are present in the anterior head region instead of antennae and also have osphradium
Malphigian tubules are excretory organs	Have organ of bojanus and kebers gland as excretory structures