4. Draw and label a compound eye. What arthropod groups possess these? How do appositional and superpositional eyes differ? How do these differences affect their performance? What is special about the eyes of stomatopods? (see Crustacean videos on class Moodle site).

1. Compare and contrast the efficiency of the different organ systems and adaptations between cnidarians and ctenophorans. Which is more efficient overall and why? 2. What are the major adaptations and characteristics present in free-living flatworms that are absent in their parasitic counterparts? Discuss how these characteristics support their lifestyles.

Describe the different types of insect mouthparts. What are the specific modifications of the different parts for each type?

Briefly explain why it is particularly difficult for small insects to localise sound. Then describe the ways in which antennal and tympanal insects localise sound, both at the biophysical and neurophysiological level.

Regarding bivalve burrowing: 1) If the penetration anchor (PA) is formed and the circular muscle of the foot contract, what would be the consequence?   2) What happens when the adductor muscles contract?

Please solve

1. Grylloblattodea     is Paleoptera   undergoes a pupal stage   lives in high altitude or ice caves   is the Canadian national insect   has wings that cover almost entire abdomen 2. Numbers of true wings on a dipteran metathorax are 2.  true/false 3. Numbers of antennae in spiders are 2.  true/false

5.  Differentiate the classes of Echinodermata based on the body structures. 6.  Differentiate the different subphyla of Arthropods based on their body structures.

Discuss the Nervous System of the vampire squid, its transmission of signals, transmission of information in neurons.

2. Describe, compare and contrast movements in the major annelid groups: surface crawling in polychaetes, burrowing in oligochaetes, and "inch- worming" in hirudineans. Be sure to address: means of attaching to substrate, muscles employed, and the role of parapodia, setae, and the coelom.