The is a thin walled storage structure while the is a muscular grinding structure utilized by annelids for digestion. 

Which term below describes a fluid-filled cavity that contains visceral organs and forms a hydrostatic skeleton? 

Sclerotization is a term that refers to which process in arthropods? 

Which of the below terms describes the radical change in boy form and physiology as a larva becomes an adult?

What distinguishes male and female roundworms? 

Which of the below structures are responsible for filtering blood and making dilute urine for excretion?

Match the following arachnid adaptations to their description:

ALL organisms that are classified as roundworms possess a nonliving cuticle that is shed and replaced through the process of ecdysis. 

Criticisms of compulsory insurance laws include which of the following? I. They provide less than complete protection since they require only a minimum amount of liability insurance. II. Even with compulsory insurance laws, a substantial number of motorists continue to operate vehicles without insurance.

Which of the following statements regarding watercraft liability under Section II of an unendorsed HO-3 policy is (are) true? I. No coverage is available for watercraft liability. II. Liability arising out of the use of watercraft that are under certain length and horsepower limits is covered.