Zoology Lab Midterm

Recognize the acoelomate body plan of the flatworm

Acoelomate means that the body cavity is completely full of mesoderm tissue, there is no open space

What is this structure in a planarian cross section

Cilia

What is this structure in a planarian cross section

Epidermis

What is this structure in a planarian cross section

Mesoderm

What is this structure in a planarian cross section

Gastrodermis

What is this structure in a planarian cross section

Pharynx

What specimen is this and what class does it belong to?

Dugesia, Class Turbellaria

What are the differences of class Turbellaria than other Platyhelminthes classes?

Free living, ciliated, rhabdites for mucus production, ocelli, and hermaphroditic

What is this organism and what class does it belong too?

Fasciola, class Trematoda

What is this organism and what class does it belong too?

Schistosoma, class Trematoda

What are the differences in class Trematoda in comparison to other Platyhelminthes classes?

Flukes, dioecious (connected to one another), and endoparasites

What is this organism and what class is it in?

Diplylidium, Class Cestoda

What is this organism and what class is it in?

Taenia, Class Cestoda

What are the differences in Class Cestoda in relation to the other Platyhelminthes classes?

Tapeworms, endoparasites, have lost a mouth or a digestive system, have a very thin epidermis, and can be several meters long

What stage is this in a Trematoda life cycle?

Redia

What stage is this in a Trematoda life cycle?

Cercaria

Recognize this structure in a tapeworm

Scolex

Recognize this structure in a tapeworm

Oral Hooks

Recognize this structure in a tapeworm

Suckers

Recognize this structure in a tapeworm

Immature Proglottids

Recognize this structure in a tapeworm

Mature Proglottids

What Phylum does this organism belong too

Phylum Rotifera

Identify the following structure in a Rotifer

Corona

Identify the following structure in a Rotifer

Trophi

Identify the following structure in a Rotifer

Pedal Gland

Identify the following structure in a Rotifer

Foot

What Phylum does this organism belong too

Acanthocephala

What are the two main types of Brachiopoda?

Articulate and Inarticulate

Is this an articulate or inarticulate brachiopod?

Articulate

Is this an articulate or inarticulate brachiopod?

Inarticulate

What is this specimen, and what class is it in?

Chiton, Class Polyplacophora

What is this organism and what class does it belong to?

Snail, Class Gastropoda

What is this organism and what class does it belong to?

Slug, Class Gastropoda

What is this organism and what class does it belong to?

Nudibranchs, Class Gastropoda

What kind of Gastropod is this?

Pulmonata

What kind of Gastropod is this?

Opistobranchia

What kind of Gastropod is this?

Prosobranchs

What organism is this and what class does it fall into?

Razor Clam, Class Bivalvia

What organism is this and what class does it belong to?

 Anodonta, Class Bivalvia

What organism is this and what class does it belong to?

Dreissena polymorpha, class Bivalvia

What organism is this and what class does it belong to?

Octopus, Class Cephalopoda

What organism is this and what class does it belong to?

Squid, class Cephalopoda

What is this structure on a freshwater clam?

Umbo

What is this structure on a freshwater clam?

Ctenidia

What is this structure on a freshwater clam?

Foot

What is this structure on a freshwater clam?

Foot

What is this structure on a freshwater clam?

mantle

What is this structure on a freshwater clam?

posterior/anterior adductor muscles

What kind of coral is this?

Hexacoral

What kind of coral is this?

Octocoral (organ-pipe coral)

What is this specimen and what Cnidarian class does it fall into?

Obelia, Class Hydrozoa

What is this specimen and what Cnidarian class does it fall into?

Hydra, Class Hydrozoa

What is this specimen and what Cnidarian class does it fall into?

Physalia, Class Hydrozoa

What are the differences in the Hydrozoa Cnidaria class in relation to the rest of the Cnidarian classes?

Mostly marine, some freshwater, have both body firms (polyp and medusa), mesoglea lacks cells, cnidocytes are made in the epidermis, contain a VELUM

What is this specimen and what Cnidarian class does it fall into?

Aurelia, Class Scyphozoa

What is this specimen and what Cnidarian class does it fall into?

Cannonball Jelly, Class Scyphozoa

What is this specimen and what Cnidarian class does it fall into?

Cassiopea xamachana, class Scyphozoa

What are the differences in the Scyphozoa Cnidaria class in relation to the rest of the Cnidarian classes?

medusa dominate stage, gastrovascular cavity holds cnidocytes, cellular mesoglea, have bells, no velum

What is this specimen and what Cnidarian class does it fall into?

Metridium, Class Anthozoa