Marine invert lab exam 1

Protozoa, porifera, ctenophora, and cnidaria

What phylum is this organism in?

What is their body made of?

What is a defining characteristic?

What is their habitat?

What do they eat?

• Phylum Foraminifera, “shelled amoebas”

• Body composition: CaCO3

• Defining characteristic: reticulapodia (net-like)

• Habitat: Benthic and Planktonic

• They eat small particles/ are microomnivores

What phylum and class is this organism in?

Phylum radiolaria, class polycystinea

What is this radiolarian’s shell made of? What is a defining characteristic of these organisms?

The shell is made of SiO2, (silicon dioxide) and these amoebas have pseudopods called axopodia that are long and spiky

What phylum and class is this creature? Describe their habitat and feeding.

Phylum Radiolara and class Polycystinea. They are mostly planktonic microomnivores that feed using axopodia, and inhabit the lower part of the food web.

What Phylum is this creature in? Describe their habitat and diet.

Phylum ciliophora

Habitat: planktonic and benthic

Feeding: small particles, micro-omnivores

What phylum, class, and subclass is this organism? Describe its habitat and feeding.

Phylum Apicomplexa

Class Conoidasida

Subclass Gregarinasina

Habitat: parasitic inside the coelom of invertebrates

Feeding: parasitic

Identify the correct stage for 1, 2, 3, 4, and 5

1. Trophozoite

2. Trophozoites after syzygy- Nuclei will produce gametes

3. Gametocyst

4. oocysts from inside gametocyst

5. Sporocytes inside oocyst

What phylum and class is this organism from? Describe its habitat and feeding.

Phylum porifera

Class calcarea

Habitat: attached to structures, reefs

Feeding: microfilter

Correctly identify each numbered part of this calcarean.

1. Osculum

2. Spongocoel

3. Attachment point

4. Pinacocyte layer

5. Amphiblastula larvae

6. Choanocyte layer

7. Ostia

What phylum and class is this organism in? Identify the two labeled parts.

Phylum Porifera

Class Calcarea

1. Osculum

2. Spicules embedded in sponge

What Phylum and class does this skeleton belong to? Describe its habitat and feeding.

Phylum Porifera

Class Hexactinellida

Habitat: attached to structures, deep reef, deep-water mud

Feeding: microfilter

What phylum and class does this organism belong to? What does the image labeled “1” depict? Describe this organism’s habitat and feeding.

Phylum Porifera

Class Demospongiae

1 = slide showing leuconoid plan

Habitat: attached to structure, reefs

Feeding: microfilter

These sponges are in Phylum Porifera and Class Demospongiae. What is an easy way to tell they are in this class?

Their size- many of the larger/”hand-sized” sponges in this lab are in that class.

Correctly identify 1, 2, and 3.

1. monaxon spicules

2. triaxon spicules

3. spongin fibers

What phylum and order does this organism belong to? Describe its habitat and feeding.

Phylum Ctenophora

Order Cydippida

Habitat: planktonic

Feeding: carnivore (eats zooplankton)

What phylum and order does this organism belong to? Describe its habitat and feeding.

Phylum Ctenophora

Order Lobata

Habitat: planktonic

Feeding: carnivore (eats zooplankton)

What phylum and order does this organism belong to? Describe its habitat and feeding.

Phylum Ctenophora

Order Beroida

Habitat: planktonic

Feeding: carnivore on other ctenophores

This jellyfish is in order Beroida. Name the parts labeled 4 and 5

4. ctens

5. mouth

What phylum, subphylum, class, and order does this organism belong to?

• Phylum Cnidaria

• Subphylum Medusozoa

• Class Hydrozoa

• Order Anthoathecata

This hydrozoan is in order anthoathecata, and is in the colonial polyp stage. Describe its habitat and feeding.

Habitat: attached to structure as a polyp, planktonic as medusa

Feeding: carnivore

Identify all of the labeled parts in this image.

1. Gonophore

2. Gastrozooid

3. Perisarc

4. Coenosarc

What are perisarcs and coenosarcs?

The perisarc is the structure that hydrozoan polyps attach to, and in some species grows around the polyp for them to retreat into to avoid predation. The coenosarc is a living structure, and serves as the direct attachment point between the perisarc and the polyp.

Classify this organism. What stage is it in?

This organism is in phylum Cnidaria, subphylum Medusozoa, class Hydrozoa, and order Anthoathecata.

It is the colonial polyp stage of fire coral Millepora

Match the image of typical Anthoathecata medusae

Match the image of the blue button Porpita, a floating coral polyp colony

What phylum, subphylum, class, and order is this colonial polyp? Describe their habitat and diet

Phylum Cnidaria

Subphylum Medusozoa

Class Hydrozoa

Order Lepthothecata

Habitat: attached to structures as polyp, planktonic as medusa

Feeding: carnivore

Name all of the numbered parts of this colonial polyp leptothecatan.

1. Gastrozooid

2. Perisarc

3. Coenosarc

4. Gonozooid

5. Developing medusa

What phylum, subphylum, class, and order is this medusa? Describe their habitat and diet.

Phylum Cnidaria

Subphylum Medusozoa

Class Hydrozoa

Order Lepthothecata

Habitat: attached to structures as polyp, planktonic as medusa

Feeding: carnivore

Label all of the numbered parts of this leptothecata medusa

1. Manubrium and mouth

2. Gonad

3. Tentacles

4. Exumbrella

Match this leptothecata medusa to the correct colonial polyp.

Match this anthoathecatan medusa to the correct colonial polyp stage.

What phylum, subphylum, class, and order is this medusa? Describe their habitat and diet.

Phylum Cnidaria

Subphylum Medusozoa

Class Hydrozoa

Order Siphonophorae

Habitat: Planktonic

Feeding: Carnivore

Correctly identify the two labeled parts in this image.

1. Swimming bell

2. Polyp colony

What phylum, subphylum, class, and order is this organism? Describe their habitat and diet.

Phylum Cnidaria

Subphylum Medusozoa

Class Hydrozoa

Order Siphonophorae

Habitat: Planktonic

Feeding: Carnivore

Correctly identify the two labeled parts in this image.

1. Pneumatophore

2. Tentacle

What phylum, subphylum, and class is this organism? Name all the labeled parts of this organism.

Phylum Cnidaria

Subphylum medusozoa

Class cubozoa

1. Exumbrella

2. Pedalia

3. Tentacles

If an organism is in class cubozoa, what phylum and subphylum is it? What habitat and feeding do they use?

Phylum Cnidaria

Subphylum medusozoa

Habitat: attached to structure as a polyp, planktonic as medusa

Feeding: carnivore

What phylum, subphylum, and class is this organism?

Phylum Cnidaria

Subphylum Medusozoa

Class Cubozoa

What phylum, subphylum, class, and subclass is this polyp?

This polyp is in:

• Phylum Cnidaria

• Subphylum Medusozoa

• Class Scyphozoa

• Subclass Discomedusae

What are all the labeled parts to this organism?

1. Planula

2. Scyphula (planula just settled)

3. Scyphistoma (polyp)

4. Strobila

5. Ephyra

6. Lappet

7. Rhopalium

8. Oral arm

9. Manubrium and mouth

What are all the labeled parts to this organism?

10. Medusa

11. Exumbrella (bell)

12. Rhopalium

13. Tentacles

14. Oral arm

15. Gonads

16. Radial canals

17. Ring canal

What phylum, subphylum, class, and subclass is this organism?

This medusa diagram is:

• Phylum Cnidaria

• Subphylum Medusozoa

• Class Scyphozoa

• Subclass Discomedusae

What phylum, subphylum, class, and subclass is this organism?

• Phylum Cnidaria

• Subphylum Medusozoa

• Class Scyphozoa

• Subclass Discomedusae

It is the same as this image.

Classify this organism:

Phylum: Cnidaria

Subphylum: Anthozoa

Class: Otocorallia

Order: Scleralcyonacea

If an organism is in subclass Discomedusae, what habitat and feeding does it have?

Habitat: attached to structure as polyp, planktonic as medusa

Feeding: carnivore

Classify this organism and identify the labeled parts

Phylum Cnidaria

Subphylum Anthozoa

Class Octocorallia

Order Scleralcyonacea

1. primary polyp; 2. secondary polyps; 3. sand anchor of primary polyp

What is this?

Classified as: Cnidaria:Anthozoa:Octocorallia:Malacalcyonacea

It is a gorgonian protein skeleton forming axial rod (soft tissue removed)

What is this?

Classified as: Cnidaria:Anthozoa:Octocorallia:Malacalcyonacea

It is the calcified skeleton of organ pipe coral

What is this? Identify the labeled parts.

Classified as:

Phylum Cnidaria

Subphylum Anthozoa

Class Octocorallia

Order Malacalcyonacea

1. polyp; 2. tentacle; 3. axial rod; 4. gastrovascular cavity

What is this?

Phylum Cnidaria

Subphylum Anthozoa

Class Octocorallia

Order Malacalcyonacea

So are these!

What are these?

Phylum Cnidaria

Subphylum Anthozoa

Class Hexacorallia

Order Zoantharia

What order is this diagram of the horizontal cut ? Identify all the labeled parts.

This horizontal diagram cut is in order Actiniaria. 1. siphonoglyphs; 2. pharynx; 3. retractor muscles; 4. primary mesenteries; 5. tertiary mesenteries; 6. secondary mesenteries; 7. filaments; 8. gastrovascular cavity

What order is this diagram of the horizontal cut ? Identify all the labeled parts.

This horizontal cut diagram is from order Actinaria. 1. tentacles; 2. oral disk; 3. mouth; 4. pharynx; 5. mesenteries and retractor muscles; 6. mesenteries & acontia; 7. column; 8. pedal disk; 9. gastrovascular cavity

Identify all of the labeled parts of this Actinarian dissection.

1. tentacles and oral disk; 2. column 3. pedal disk; 4. pharynx; 5. siphonoglyphs; 6. gonads; 7. acontia; 8. mesenteries of gastrovascular cavity

What order is this organism?

Order Corallimorpharia

What class and order order is this organism? Identify the labeled parts.

Class Hexacorallia, Order Scleractinia

1. theca of colonial polyp; 2. sclerosepta; 3. solitary polyp

What genera are these corals?

1. Acropera

2. Agaricia

3. Orbicella

They are in Class Hexacorallia, Order Scleractinia

What genera are these corals?

1. two species of Porites

2. Siderastrea

3. Manicina

They are in Class Hexacorallia, Order Scleractinia

What genera are these corals?

1. Pseudodiploria

2. Diploria

3. Dichocoenia

They are in Class Hexacorallia, Order Scleractinia