Bio II Lab 7 - Platyhelminthes, Annelida, and Mollusca

1. What is the name of this organism?

2. Which phylum does it belong to?

3. Which class is it in?

1. Planaria.

2. Phylum Platyhelminthes.

3. Class Turbellaria.

What is the name of the structure being pointed at called? And what is its purpose?

Auricles which are chemosensory organs.

What is the name of the structure being pointed at called?

Eyespots

What are B, C, and D pointing to in the photo?

B - gastrovascular cavity

C - Pharynx

D - Mouth

What are all the structures being pointed at called?

A - intestinal cavity

B - Pharyngeal cavity

C - Epidermis

D - Pharynx

E - Gastrodermis

1. What is the name of this organism?

2. Which phylum does it belong to?

3. Which class does it belong to?

1. Clonorchis

2. Phylum Platyhelminthes

3. Class Trematoda (flukes)

Name all the structures being pointed at in the photo

A - oral sucker

B - Pharynx

C - Mouth

D - Intestinal caeca

E - Ventral sucker

Name all the structures being pointed at in the photo

A - Uterus

B - Ovary

C - Testis

1. What is the name of this organism?

2. Which phylum does it belong to?

3. Which class does it belong to?

1. Taenia pisiformis

2. Phylum Platyhelminthes

3. Class Cestoidea

Identify the structures in the photo

A - Scolex

B - Hooks

C - Suckers

D - Proglottids

Identify the three proglottids

Left - immature proglottids

Middle - mature proglottids

Right - gravid proglottids

Based off the picture, which phylum does this organism belong to?

Phylum Annelida

Identify all the structures in the photo

A - Circular muscles

B - Longitudinal muscles

C - Intestine

D - Ventral Nerve Chord

E - Dorsal Blood Vessel

F - Coelom

1. What is the name of this organism?

2. Which phylum does it belong to?

3. Which clade does it belong to?

4. What is the structure being pointed at?

1. Nereis

2. Phylum Annelida

3. Clade Errantia

4. Parapodia

1. Which clade does this worm belong to?

2. Identify the regions and structure in the photo

1. Clade Clitellata

2. A = anterior end, B = clitellum, C= posterior end

What are numbers 3, 4, and 5 pointing to?

3 - crop (food storage organ)

4 - gizzard

5 - intestine

What are numbers 1, 2 ,3, 4 pointing to in the photo?

1 - hearts (5 pairs and usually black)

2 - seminal vesicles (male and larger white pieces)

3 - seminal receptacles (female and smaller)

4 - dorsal blood vessel

1. What is the name of this organism?

2. Which phylum does it belong to?

3. Which class does it belong to?

1. Chiton

2. Phylum Mollusca

3. Class Polyplacophora

What are the structures in the photo?

1 - calcerous plates (8)

2 - gills

3 - mouth

4 - girdle

5 - ventral foot

Which phylum and class do these organisms belong to?

Phylum Mollusca, Class Gastropoda

Which phylum and class do these organisms belong to?

Phylum Mollusca, Class Bivalvia

What are A, C, E, F, and H pointing to in the picture?

A & E - adductor muscle

C - gills

F - mantle

H - foot

What are 1 and 2 pointing at in the picture?

The 2 siphons

Which phylum and class do these organisms belong to?

Phylum Mollusca, Class Cephalopoda

What are 1-5 pointing at in the picture?

1 - fins

2 - mantle

3 - eyes

4 - arms

5 - tentacles

What is 1 pointing to in the photo?

Siphon

What are structures A, B, and C?

A - pen

B - ink sac

C - buccal mass (mouth/beak)

What is the name of the structures in the photo?

Ctenidia (gills)