BIO 112 Lab Exam 2 (Papers 1&2)

Eyespots

What are the two cartoonish eyes on a planarian called?

Auricles

What are the two bumps on the head of the planarian called

Phylum Platyhelminthes

What do the following all have in common?

Planarian, sheep liver fluke, and tapeworm

The Anterior End

What end is displayed of the sheep liver fluke?

The Posterior End

What end is displayed of the sheep liver fluke?

Class Turbellaria

What class does the planarian belong to?

Class Trematoda

What class does sheep liver fluke belong to?

Cercariae

What sheep liver fluke stage is represented?

Redia

What sheep liver fluke stage is represented?

The hooks

What does the arrow point to on tapeworm? its hard to see, but they are the black bits at what appears to be the mouth

The scolex

What is this part of the tapeworm called?

Class Cestoda

What class does the tapeworm belong to?

first segment: immature proglottids

What segment of the tapeworm is displayed?

second segment: mature proglottids with gonads

What segment of the tapeworm is displayed?

third segment: gravid proglottids with eggs

What segment of the tapeworm is displayed?

Phylum Rotifera

What phlyum is the rotifer?

Corona (made of the cilia)

What part of the rotifer is this?

foot

What part of the rotifer is this?

They only have longitudinal muscles

Why do nematodes move in a whip-like fashion?

Phylum Nematoda

What phylum do these belong to?

Dirofilaria immitis (Dog heartworm), Ascaris, and Trichinella

Dog heartworm

What type of worm is displayed?

Red blood cells

What surrounds the dog heartworm?

Hint: what are the pink shapes?

male

Are the Ascaris (parasitic nematode) male or female?

female

Are the Ascaris (parasitic nematode) male or female?

Trichinella

What nematoda is displayed in the pork muscle?

Chiton

What organism is showcased?

Dorsal Plates

What is number 1?

Foot

What is number 5?

Mouth

What is number 3?

Class Polyplacophora

What class is Chiton?

Class Bivalia

What class is Clam?

Open circulation

What type of circulation does a clam have?

Adductor Muscles

Clam Dissection

What part does A refer to?

Gills

Clam Dissection

What part does B refer to?

Foot

Clam Dissection

What part does C refer to?

Mantle

Clam Dissection

What part does D refer to?

Visceral Mass

Clam Dissection

What part does E refer to?

Class Gastropoda

What class do the following belong to?

Conch, snail, abalone

It brings in food

What does the radula of a snail do?

Univalve shells

What type of shells are these?

Assorted Bivalves

What type of shells are these?

Inside the shell

Where is the mantle located on a slug?

Foot

What part of the slug is this?

Class Cephalopoda

What class are octopus, squid, cuttlefish and nautilus?

Controls air for movement/boyancy

What is the function of the nautilus shell?

2

How many tentacles does a squid have?

8

How many arms does a squid have?

Mantle

Squid Dissection (External)

What part is A?

Funnel/ Siphon

Squid Dissection (External)

What part is B?

Pen & Beak

Squid Dissection (Internal)

What part is C?

Gills

Squid Dissection (Internal)

What part is D?

Funnel retractor muscles

Squid Dissection (Internal)

What part is E?

Ink Sac

Squid Dissection (Internal)

What part is F?

Cuttlefish

What organism is this?

Leeches

What organisms are these?

Parapodia

What part of the clamworm is this?

In-depth look

Dissected Earthworm