Which of the following arthropod gas exchange strategies involves gas exchange between surrounding water and blood?

In the space below, answer the following questions concerning a squid. a) As a predator, the squid is very active and requires an adaptation for providing adequate blood flow at high pressure to deliver oxygenated blood efficiently.  What adaptation does the squid have for doing this?  b)  How is foot adapted for predation? 

In the space below, answer each of the following about a Mussel. a) To what class does a Mussel belong: Bivalvia, Cephalopoda, Gastropoda, Polyplacophora b) Structurally, how is the shell of a Mussel modified compared to the shell of the Generalized Mollusc? c) What specialized function does the modified shell of the Mussel perform?

Pedicellaria are found in:   What is the function of pedicellaria?

Enter the letter (a-g) to indicate which of the animal phyla match the characteristics listed below: a) Mollusca b) Arthropoda c) Echinodermata d) Mollusca and Arthropoda e) Mollusca and Echinodermata f) Arthropoda and Echinodermata g) Mollusca, Arthropoda, and Echinodermata   Belongs to Bilateria clade Hemocoel is main body cavity  Segmentation Deuterostome

Choose the description that accurately describes the outcome of the developmental process called torsion:

Comparison of which of the following characteristics would help you determine if an arthropod was a myriapod or a crustacean?

Which of the following best defines tagmatization?

Which of the following is a characteristic that arthropods share with nematodes?

In which class of molluscs does torsion occur?