Bio Exam 1 (Quiz Set 2)

All chordates (phylum: chordata) share which of the following characters?

- dorsal hollow nerve cord - notochord - pharyngeal slits (humans don't have) - post anal tail

The Cambrian Explosion gets its name due to the increased volcanic activity at that time

False: - it was a radiation of animal diversity (550 million years ago) - many of today's phyla appeared here

Which of the following animal phyla have members that are radically symmetric

echinodermata (starfish and kin)

The Brown Recluse is one of Utah's most dangerous resident spiders

false

Which group in Arthropoda has three body segments?

hexapods/insects

which of the following is claim/statement that can be tested using the scientific method?

hurricanes are occurring more frequently and are stronger than they were in the past few decades

which of the following is a true statement about ecdysis or molting?

it is the process by which chelicerate shed their exoskeleton and grow

After swimming in the hot springs your legs begin to itch and small red welts appear on your legs. You likely came in contact with a parasite within the group

nematoda (roundworms) / platyhelminthes (flatworms, flukes, and tapeworms)

which of the following is not an arthropod?

sea urchins (arthropod: arachnids, horseshoe crabs, lobsters, crab, shrimp, most insects, millipedes and centipedes)

Annelids are segmented both internally and externally meaning their exterior typically has annuli (rings) and these rings demarcate the internal sections

true