Exam 34: Protostomes

A snail in your garden and an oyster are quite different in appearance.What would be evidence to justify grouping them together?

Dibenzoylhydrazines are a category of molecules that have been used as insecticides.They work by blocking ecdysteroid receptors.How does this kill an insect?

Scorpions have a prosoma, pedipalps that are modified into claws, and chelicerae.Which taxonomic group are they a member of?

At a celebratory dinner for a recent publication, a marine biologist ordered the lobster claw appetizer.What part did she order?

Each segment of an annelid typically contains bristles of chitin called

In what way are a human and a crab similar?

The evolutionary innovation that first appeared in arthropods and is characteristic of the most successful of all animal groups is that of

An entomologist observed a locust sitting on a branch pumping its abdomen like an accordion.What is the insect most likely doing?

A marine biologist makes a presentation about crustaceans to your biology class.He explains that he has recently received an NSF grant to study sessile crustaceans.You are only aware of one group of sessile crustaceans.This crustacean must be