Lab Practical 3 - Biology of Animals Lab

Another term for coelomate

Eucoelomate

Two diagnostic features of phylum mollusca

Mantle and muscular foot

What are three structures that only some mollusks have?

Shell, radula, and ctenidia

Ctenidia and the phylum + class it belongs to

Specialized gills, mollusca, and bivalvia

Radula and the phylum it belongs to

Cat-like tongue and mollusca

What phylum and class is this organism?

Platyhelminthes and trematoda

Classes to know within platyhelminthes

Trematoda, cestoda, turbellaria (and monogenea)

Organisms in trematoda

Flukes

Organisms in cestoda

Tape worms

Organisms in turbellaria

Planarians

How can you identify flame cells?

Flickering flagella

Turbellaria diagnostic feature

Ocelli

Trematoda diagnostic feature

Ventral/posterior/oral suckers

Cestoda diagnostic feature

Scolex

Structures to know and identify within class turbellaria

Ocelli, pharynx, intestine, ovaries, testes, and parenchyma

What structure is this?

Ocelli

What structure is the central gap in this turbellarian?

Pharynx

What structure is the line between this turbellarians ocelli?

Intestine

What structure is 6?

Ovary

What structure is 7?

Testes

What structure fills the space in between the body wall and the gut in turbellarians?

Parenchyma

What structure is the pointer indicating?

Gut/intestine/pharynx

Structures to know and identify within class trematoda

Oral/ventral/anterior suckers, pharynx, testes, uterus, intestine, and parenchyma

What is the structure circled?

Oral/anterior sucker

What is the cone structure posterior to the oral sucker in this trematode?

Pharynx

What are the bright pink, posterior branches in this organism?

Testes

What are the dark pink, central branches in this organism?

Uterus

What are the two branches extending from the oral sucker in this trematode?

Intestine

What structure fills the gap between the gut and body walls in this organism?

Parenchyma

Structures to know and identify within class cestoda

Scolex, parenchyma, genital pore, testes, uterus, and proglottid

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

Scolex and cestoda

Does this organism have parenchyma? If so, where is it located?

Yes, the cavity between the body wall and gut of the organism

What is the structure circled?

Genital pore

On the upper proglottid sgement, what are the tiny dots?

Testes

What structure is the line going down the middle of this cestode?

Uterus

What structures are these and what class do they belong to?

Proglottids and cestoda

What does each proglottid have in it?

An individual reproductive system

What phylum and class does this organism belong to?

Platyhelminthes and trematoda

What phylum and class does this organism belong to?

Platyhelminthes and trematoda

What structures are shown and what phylum and class do they belong to?

Proglottids and scolex, platyhelminthes and cestoda

What else can the oral sucker operate as in trematodes?

Genital pore

What phylum and class does this organism belong to?

Platyhelminthes and turbellaria

What phylum and class does this organism belong to?

Platyhelminthes and trematoda

Where do cestodes live/be found in the host/their habitat?

The intestines of their host(s)

What structure are the two ball-like clumps?

Ovaries

What do cestodes use their scolex for?

Host attachment

What phylum and class does this organism belong to?

Platyhelminthes and cestoda

What is this image showing?

A transverse-cut cross section of a planarian

What type of gut does phylum platyhelminthes have?

Incomplete gut or no gut

What type of gut does phylum rotifera have?

Complete gut

Is phylum platyhelminthes diploblastic or triploblastic?

Triploblastic

Is phylum rotifera diploblastic or triploblastic?

Triploblastic

Phylum rotifera diagnostic trait

Corona

What is the corona and what phylum does it belong to?

Wheel-like structure and rotifera

What type of coelomate is phylum platyhelminthes?

Acoelomate

What type of coelomate is phylum rotifera?

Pseudocoelomate

What phylum do these organisms belong to?

Rotifera

What phylum do these organisms belong to?

Rotifera

What phylum and class does this organism belong to?

Platyhelminthes and turbellaria

Are platyhelminthes monoecious or dioecious?

Monoecious

Are rotifers monoecious or dioecious?

Dioecious

Classes to know within mollusca

Gastropoda, cephalopoda, polyplacophora, and bivalvia

Example of an organism within polyplacophora

Chiton

What phylum and class does this organism belong to?

Mollusca and polyplacophora

Where can the shell be located in cephalopods?

Internally, externally, and none at all

Example of an organism within cephalopoda

Octopus, squid, etc

What phylum and class does this organism belong to?

Mollusca and cephalopoda

What phylum and class does this organism belong to?

Mollusca and cephalopoda

What type of circulatory system do cephalopods have?

Closed

What type of circulatory system do polyplacophorans have?

Open

What happened to the muscular foot in cephalopods?

It specialized into tentacles

*Gastropods in notebook