quiz 8

An urchin's jaw apparatus called ____________________ __________________ has five individual jaws that reflect the animal's symmetry

Aristotle's Lantern

Modern cephalopods include the _________________ with external shells, and coleoids with internal shells.

Exoskeleton

Corals have always been successful reef builders.

False

Fossil forms of crinoids occupied deep marine habitats.

False

Gastropods are strictly marine fauna.

False

The seven phyla and three classes important to the fossil record are important because they all have soft parts that preserve well.

False

Trilobite fauna are not useful for paleogeographic reconstructions of the Cambrian and Ordovician.

False

Trilobites are divided longitudinally into the cephalon, thorax, and pygidium.

False

Centipedes and millipedes belong to the Subphylum _______________________.

Myriapoda

_______ are modern corals that have a symbiotic relationship with dinoflagellates.

Scleractinians

All sponges are aquatic.

True

Ammonoids went extinct at the end of the Cretaceous period.

True

Archaeocyathids were evolutionary dead ends

True

Bivalves are twin-valved shellfish such as clams that have bilateral symmetry parallel to the opening.

True

Blastoids are echinoderms that went extinct at the end of the Permian period.

True

Cephalopods including octopi, squid, cuttlefish, and the extinct ammonoids are mollusks that are adapted for a predatory lifestyle.

True

Class Gastropoda includes the slugs and snails.

True

Corals can be solitary or colonial.

True

Phylum Mollusca includes snails, slugs, clams, oysters, octopi, squid and cuttlefish. as well as the extinct ammonoids and belemnites

True

The Hexapoda include both the winged and non-winged insects. and all have 6 appendages and a single pair of antennae.

True

The Subphylum Chelicerata includes horseshoe crabs, the extinct sea scorpions, terrestrial scorpions and spiders

True

Brachiopods _____________________.

all of the above

The __________________ are the only phylum in which all species are colonial.

bryozoa

All echinoderms have an external skeleton composed of porous plates of the mineral _______________.

calcite

Which of the following is not a life strategy for the Cnidarians?

encrusting

Brachiopods have bilateral symmetry that is parallel to the commissure (opening).

false

All mollusks have a body plan based upon four features: the radula, foot, visceral mass, and ______

mantle

Bryozoa are sensitive to the following environmental parameters:

temperature, depth, salinity, substrate type, and turbulence

The process of ________________________ is characteristic of all gastropods.

torsion