Chapter 6 Gen Bio Lab: Survey of Animals I- Monoblastic and Diploblastic

Asymmetrical

No body plane

Example of asymmetrical

Sponge

What body plane does a sponge have?

Asymmetrical

Radially symmetrical 

Multiple planes through axis 

Examples of radially symmetrical animals

Cnidarians

Bilateral

One plane, two mirror halves

Examples of bilateral

Humans and frogs

Monoblastic 

One layer 

Example of monoblastic

Sponge

Diploblastic

Two layers

Examples of diploblastic

Cnidarians

Triploblastic 

3 layers 

What body plan do cnidarians have?

Radial symmery

What germ layer classification is cnidarians?

Diplo

What are the three groups of cnidarians?

Anthozoans, scyphozoans, hydrozoans

What organisms are anthozoans?

Coral and sea anemones 

What body form is dominant in anthozoans?

Polyp only

What animals are sycphozoans?

Jellyfish

What body form is dominant in scyphozoans?

Medusa but alternates

What body form is dominant in hydrozoans?

Polyp but alternates 

What are the specialized polyps in hydrozoans?

Ganzoids, Gastrozoids, and dactyloid

Polyp for reproduction

Ganzooid

Polyp for feeding

Gastrozoid

Polyp for defense

Dactylozoids 

What body form stage is dominant in obelia?

Polyp

What are the two polyp types in obelia?

Polyp for feeding (tentacles) and specialized for reproduction (medusa buds)

How do obelia polyps reproduce?

Medusa buds

What form is dominant in hydra 

Polyp only

What kind of reproduction does hydra do when there is abundant food?

Asexual reproduction

What kind of reproduction does hydra do when there is scarce food?

Sexual reproduction

4 parts in Portuguesse man o war

Balloon filled w/gas, gastrozoids, ganozoids, Tentacles

What is the organelle contained in cnidocytes?

Nematocyst 

Muscle fibers

Locomotion

Nerve net

Coordination of muscular activities

Gastrovascular cavity

Digestion and circulation opening is both mouth and anus

Ostia 

Pores 

Osculum

Opening, water exists

Spongocoel

Water enters

Choanocytes

Flagellated cells move water w/in flagella

Spicules 

Collagen fiber that support tissue 

What are the two kinds of spicules?

Silacaeous and calcreous