BIO Lab II Final: Invertebrates

What are classes under phylum Porifera?

none

What is an example of the phylum Porifera?

Sponges

Phylum Porifera live in what habitat?

Aquatic

Mobility of phylum Porifera?

Porifera are **immobile**

What are 3 distinguishing characteristics of phylum Porifera?

1. Porifera has no tissues or organs.
2. They’re filter feeders.
3. They have spicules.

The overall symmetry of phylum Porifera?

Porifera is shapeless and **lacks symmetry**

Is phylum Porifera diploblastic or triploblastic?

none

Does phylum Porifera have a coelom?

no

Is phylum Porifera deuterostome or protostome?

none

T/F Porifera has no digestive, nervous, or respiratory systems.

True

How do phylum Porifera reproduce?

Asexually: **Budding**, **Fragmentation,** or **Parthenogenesis**

Sexually

What are the classes under phylum Cnidaria?

1. Antho**zoa**
2. Scypho**zoan**
3. Cubo**zoan**
4. Hydro**zoa**

What are examples of phylum Cnidaria?

1. Sea anemones and Coral
2. Jellyfish
3. Box-Jellyfish
4. Hydra

Phylum Cnidaria lives in what habitat?

Aquatic

Mobility of phylum Cnidaria?

1. Anthozoa: **embedded** on the sea floor as adults
2. Scyphozoans: **swim** with muscles around their bell

Name some distinguishing traits of phylum Cnidaria.

1. **Cnidocytes**: stinging cells
2. They have two distinguishing body plans (**Medusa and Polyp**)

The overall symmetry of phylum Cnidaria?

Cnidarians have radial symmetry.

Are Cnidarians diploblastic or triploblastic?

Cnidarians are diploblastic.

Does phylum Cnidaria have a coelom?

none

Are phylum Cnidaria deuterostome or protostome?

none

Phylum Cnidaria’s digestive system is ____________?

incomplete

Phylum Cnidaria’s nervous system consists of ________?

nerve net

Does phylum Cnidaria have a circulatory system?

no

Does phylum Cnidaria have a respiratory system?

no

How does phylum Cnidaria reproduce?

Sexually or Asexually

What are the classes under phylum Platyhelminthes?

none

What is an example under phylum Platyhelminthes?

flatworms

What is phylum Platyhelminthes’ habitat?

Aquatic

Mobility of phylum Platyhelminthes?

1. Epidermal cells
2. Twisting muscles

Name a distinguishing traits of the phylum Platyhelminthes.

Free-living or parasitic

Overall symmetry of phylum Platyhelminthes?

Phylum Platyhelminthes is **bilateral**.

Is the phylum Platyhelminthes diploblastic or triploblastic?

Phylum Platyhelminthes is **triploblastic**.

Does the phylum Platyhelminthes have a coelom?

No, it is an **acoelomate**.

Is phylum Platyhelminthes protostome or deuterostome?

Phylum Platyhelminthes is a protostome.

The digestive system of phylum Platyhelminthes is __________?

incomplete

The nervous system of phylum Platyhelminthes consist of ____________?

1. Ganglia
2. Nerve cords
3. Eyespots

Does phylum Platyhelminthes have a circulatory system?

no

Does phylum Platyhelminthes have a respiratory system?

no

How does phylum Platyhelminthes reproduce?

Asexually or Sexually

What are the classes under phylum Rotifera?

none

What are examples under the phylum Rotifera?

wheel animals

In what habitat does phylum Rotifera live?

Aquatic

Mobility of phylum Rotifera?

Phylum Rotifera is planktonic

Planktonic: Cannot swim, free-floating.

Name distinguishing traits of phylum Rotifera.

1. Rotifera have a **corona (crown)** that is a **wheel**-like structure with **cilia**.

Overall symmetry of phylum Rotifera?

Phylum Rotifera has **bilateral** symmetry.

Is phylum Rotifera diploblastic or triploblastic?

Phylum Rotifera is triploblastic.

Does phylum Rotifera have a coelom?

Yes

Is phylum Rotifera a protostome or deuterostome?

Phylum Rotifera is a protostome.

The digestive system of phylum Rotifera is ___________?

advanced

The nervous system of phylum Rotifera consists of __________?

1. Early brain
2. Ganglia
3. Sensory organs

Does phylum Rotifera have a circulatory system?

No, but it’s a filter feeder

Does phylum Rotifera have a respiratory system?

Breath through diffusion

How does phylum Rotifera reproduce?

Asexual: Parthenogenesis

What are the classes under phylum Nemertea?

none

Give an example under phylum Nemertea.

Ribbon worms

What habitat does phylum Nemertea live in?

Mostly aquatic

Are Nemertea mobile?

Yes

Name some distinguishing characteristics of Nemertea.

1. Nemertea utilize proboscis as a way to capture prey.
2. Sexual dimorphism
3. Folds

The overall symmetry of phylum Nemertea?

Nemertea are bilateral.

Is phylum Nemertea triploblastic or diploblastic?

Nemertea are triploblastic

Does phylum Nemertea have a coelom?

Yes

Is phylum Nemertea protostome or deuterostome?

Protostome

How is the digestive system of the phylum Nemertea?

well-developed

What are the components of the nervous system of phylum Nemertea?

1. 4 lobe brain
2. eyespots
3. lateral nerve cord

Does phylum Nemertea have a circulatory system?

Yes, an early circulatory system.

Does phylum Nemertea have a respiratory system?

They do diffusion through the skin

How does phylum Nemertea reproduce?

Mostly sexually, but in freshwater they do it asexually.

What are the classes under phylum Mollusca?

1. Polyplacophora
2. Bivalvia
3. Gastropoda
4. Cephalopoda

Name some examples under the phylum Mollusca.

1. Chitons
2. Scallops
3. Snails
4. Squid

What habitat does phylum Mollusca live in?

Mostly Aquatic (marine) or Terrestrial

How do Mollusca move?

1. Jet propulsion
2. Muscular foot

What are some distinguishing characteristics of the phylum Mollusca?

1. Muscular foot
2. Mantle
3. Visceral mass
4. Outer shells
5. Body torsion: shifting of the internal organs (**anus over the head**)

Overall symmetry of Mollusca?

Bilateral

Are Mollusca triploblastic or diploblastic?

Triploblastic

Do Mollusca have a coelom?

Yes

Are Mollusca deuterostome or protostome?

Protostome

How is the digestive system of Mollusca

Well-defined

What are the components of the Mollusca’s nervous system?

1. Never cords
2. Cerebral ganglia
3. Sensory organs: eyes

**Overall, very well-developed**

How is the circulatory system of Mollusca?

1. Cephalopods: Closed with defined **vessels**
2. In other cases: Open

How is the respiratory system of Mollusca?

Mollusca use **gills.**

How does the phylum Mollusca reproduce?

Mostly sexual

What classes are under phylum Annelida?

1. Polychaeta
2. Oligochaeta

Name examples from phylum Annelida.

1. Segmented worms
2. Earthworms
3. Leeches
4. Marine worms

What habitat do Annelids live in?

Aquatic or Terrestrial

Are Annelids mobile?

Yes

Name some distinguishing characteristics of Annelids.

1. Defined blood vessels
2. Have a nerve ring of fused ganglia
3. Segmented

The overall symmetry of Annelids.

Bilateral

Are Annelids triploblastic or diploblastic?

Triploblastic

Do Annelids have a coelom?

Yes

Are Annelids protostome or deuterostome?

Protostome

The digestive system of the phylum Annelida is?

Well-developed with a **pharynx**

Components of the phylum Annelida’s nervous system

1. Nerve ring of fused ganglia
2. Nerve cord

The circulatory system of Annelids?

Closed with defined blood vessels

How is the respiratory system of Annelids?

Breathe through gas exchange across the body.

How do Annelids reproduce?

1. Most species of annelids can reproduce both asexually and sexually.
2. However, leeches can reproduce only sexually.


1. Asexual reproduction may occur by budding or fission.

What are the classes under the phylum Nematoda?

none

Give an example of a Nematode.

Roundworms

What is a Nematode’s habitat?

Terrestrial and aquatic

Are Nematoda mobile?

Yes, they can also be parasitic

Name distinguishing characteristics of Nematoda.

1. Have testis