ZOOLOGY LAB EXAM 1

What specimen is this and what phylum does it belong to?

Trichonympha - Phylum Parabasala

What is Trichonympha’s relationship with termites?

Symbiotic - Trichonympha allows the termite’s gut to digest cellulose from wood

What specimen is this and what phylum does it belong to?

Trichomonas - Phylum Parabasala

What relationship does Trichomonas have with humans?

A parasite that causes trichomoniasis (STI)

What specimen is this and what phylum does it belong to?

Euglena - Phylum Euglenozoa

What specimen is this and what phylum does it belong to?

Trypanosoma - Phylum Euglenozoa

What diseases are spread by Trypanosoma?

African Sleeping Sickness and Chagas’ disease

What vectors spread Trypanosoma?

Tsetse flies and kissing bugs

What specimen is this and what phylum does it belong to?

Dinoflagellates - Phylum Dinoflagellata

How many flagella do dinoflagellates posssess and what is their position?

2 unevenly oriented flagella, situated transversally and logitudinally

What is this specimen and what phylum does it belong to?

Paramecium - Phylum Cilliophora

What does Paramecium look like when undergoing conjugation?

They align horizontally to exchange genetic material

What does Paramecium look like when undergoing fission?

One paramecium splits into two individuals in a form of asexual reproduction

What is this specimen and what phylum does it belong to?

Vorticella - Phylum Cilliophora

What is this speciumen and what phylum does it belong to?

Stentor - Phylum Cilliophora

What specimen and what phylum does it belong to?

Plasmodium - Phylum Apicomplexa

What is the difference in how Plasmodium and Trypanosoma sit within the bloodstream?

Plasmodium resides inside the bloodcell while Trypanosoma sits in the plasma

What disease does Plasmodium spread?

Causes malaria

What is the vector for malaria?

Infected mosquitos

What is this specimen and what phylum does it belong to?

Foraminifera - Phylum Foraminifera

What are foraminifera shells made of?

Calcium carbonate

What are the different notable developmental stages of starfish?

Morula → Blastula → Gastrula → Bipinnaria

What starfish developmental stage is this?

Morula

What starfish developmental stage is this?

Blastula

What starfish developmental stage is this?

Gastrula

What starfish developmental stage is this?

Bipinnaria

What is the fate of a blastopore in a deuterostome?

It is the first opening that forms during gastrulation and becomes the anus

Is this micrograph image an example of a sea sponge’s spicules or spongin?

Spicules

Is this micrograph image an example of a sea sponge’s spicules or spongin?

Spongin

What are the three sponge body plans?

Asconid, synocoid, leuconoid

What sponge specimen is this, what class does it belong to, and what body plan does it possess?

Leucosolenia - Class Calcispongiae - Asconid body plan

What sponge specimen is this, what class does it belong to, and what body plan does it possess?

Grantia - Class Calcispongiae - Syconoid body plan

What sponge specimen is this, what class does it belong to, and what body plan does it possess?

Callyspongia - Class Demospongiae - Leuconoid body plan

What sponge specimen is this, what class does it belong to, and what body plan does it possess?

Spongia - Class Demospongiae - Leuconoid body plan

How is the asconoid body plan described?

A single canal lined with body cells

How is the synconoid body plan described?

Folded with incurrent and radial canals

How is the leuconoid body plan described?

Possessing many choanocyte chambers

Define the term osculum

The large opening of a sponge through which filtered water and waste products exit

Define the term spongocoel

The sponge’s large central opening

Is this a hydrozoan medusa or a schyphozoan medusa?

Hydrozoan medusa

Is this a hydrozoan medusa or a schyphozoan medusa?

Schyphozoan

What are the important structures of the Obelia life cycle?

Planula → Developing Polyp → Hydranth & Gonangium → Medusa

What is this structure from the Obelia life cycle?

The planula

What is this structure from the Obelia life cycle?

The developing polyp

What is this structure from the Obelia life cycle?

The hydranth

What is this structure from the Obelia life cycle?

The gonangium

What is this structure from the Obelia life cycle?

The medusa

What are the important structures of the Aurelia life cycle?

Planula → Schyphistoma → Strobila → Ephyra → Medusa

What is this structure from the Aurelia life cycle?

The planula

What is this structure from the Aurelia life cycle?

The schyphistoma

What is this structure from the Aurelia life cycle?

The strobila

What is this structure from the Aurelia life cycle?

The ephyra

What is this structure from the Aurelia life cycle?

The medusa

What are the important structures on the Aurelia life cycle’s medusa?

Gonads, oral arms, marginal tentacles, rhopalium, and gastric pouch

What structure is this on the Aurelia life cycle’s medusa?

The gonads

What structure is this on the Aurelia life cycle’s medusa?

The oral arms

What structure is this on the Aurelia life cycle’s medusa?

The marginal tentacles

What structure is this on the Aurelia life cycle’s medusa?

The rhopalium

What structure is this on the Aurelia life cycle’s medusa?

The gastric pouch