Exam 34: Protostomes

Turbellarian flatworms have a distinct head.When compared to the head of an insect, what is the flatworm head missing? rev: 05_14_2014_QC_49568

What change would result for a land snail that had a mutation interfering with chitin formation?

The phyla Bryozoa and Brachiopoda have which feature in common?

How does a ribbon worm differ from a flatworm?

Air passage into the trachea of most insects is controlled by the closing and opening of valves, which operate special openings called

In many arthropods, body segments have become fused into functional groups called _____.

Select the mismatched pair of Phylum Mollusca classes and their examples.

What is a simple way for determining if an annelid is a polychaete or a clitellate?

The lophophore of a brachiopod serves the same function as the __________ in a bivalve.

If a hiker picked up a mollusk on a trail in a rain forest, what class would it belong to?

How could a paleontologist distinguish between a bryozoan fossil and a brachiopod fossil?

Barnacles are sessile filter feeders but unlike bivalves they have internal fertilization.How do they solve this problem?

The sexual reproduction of earthworms characteristically is

What would result if a leech had a mutation causing it to secrete low levels of anticoagulants?

Compound eyes are composed of independent visual units called

Trochophores, the free-swimming larvae of many mollusks, are propelled through the water by

In arthropods, locomotion is accomplished by muscles that work against

Paramecia use cilia for locomotion and for gathering organic matter.How are rotifers similar?

A _________ is a circular or U-shaped ridge around the mouth, bearing either one or two rows of ciliated, hollow tentacles.

Decapod crustaceans (shrimps, lobsters, and crabs) all lack