Coelomates: Protostomes

1. have an actual body cavity

2. Triploblastic organisms (3 true tissue layers)

3. exhibit bilateral symmetry

4. shows cephalization

What are the main (4) characteristics of coelomates?

1. Protostomes

2. Deuterostomes

Coelomates are splits in ______________ and _______________

1. Mollusca

2. Annelida

3. Arthropoda

Protostomes are divided into 3 phylum, what are they?

1. Lophotrochozoans

2. Ecdysozoans

Protostomes can be classified as _________________ or __________________

Lophotrochozoans - increment additions

Ecdysozoans - molting

All lophotrochozoans grow by ________________ to the body while all ecdysozoans grow by ______________

1. Mollusca

2. Annelida

3. Rotifera (roundworms)

4. Platyhelminthes (flatworms)

Which phyla are lophotrochozoan?

1. Nematodes (roundworms)

2. Arthropods

Which phyla are Ecdysozoan?

gills, which exhibit gas exchange

Protostomes:

The mantle cavity in the Mollusca phylum is responsible holds the _______________

1. Gastropoda (single shell)

2. Bivalvia (2 shells)

3. Cephalopoda

Protostomes:

What are the three classes of Mollusca?

Gastropoda

Protostomes: Mollusca:

Class _________________ exhibit torsion, resulting in a single spiral shell

It serves as a scraping structure and is used as a weapon

What is the function of the radula in gastropods?

Bivalvia

Protostomes: Mollusca:

Class ________________ filter feeds using incurrent and excurrent openings

Gastropoda (single shell)

Snails and slugs belong to the class _____________

Bivalvia (two shells)

Clams and oysters belong to the class _____________

Class Cephalopoda (squid, nautilus, and octopi)

Which class of mollusks is known for having a complex eye?

Camouflage

Protostomes: Mollusca:

Cephalopods depend mostly on ____________ for survival?

1. Uses chromatophores to change color

2. can mimic the shape of other animals

3. some can change skin texture

List 3 behaviors strategies that cephalopods use to camouflage

Octopus (cephalopod)

The ______________ is the smartest aquatic animal

Annelida

The _________________ phylum was one of the first protostomes to move to land and develop segmentation

Earthworms (oligochaeta)

Protostomes: Annelida:

____________________ have a developed trochophore larvae and are chemo sensitive

1. They lost major body systems

2. They become parasitic

Protostomes: Annelida:

In what ways did the class Oligochaeta (earthworms) regress after moving to land?

Arthropoda

The ___________________ phylum is the most diverse phylum of protostomes, with millions of species, especially insects

Specialized appendages

Arthropods have _________________ such as antennae, mouth parts and legs

1. book lungs are seen in spiders

2. Gills are seen in crustaceans

Arthropods exhibit a variety of gas exchange methods. List 2 examples

Molting, where they shed their exoskeleton and produce a new one

What process do arthropods undergo to grow?

1. Chelicerata

2. Mandibulata

What are the two subphyla of Arthropoda?

Chelicerata

Protostomes: Arthropoda:

Subphylum ___________________ has sucking mouthparts and no antennae

Class Arachnida, which includes spiders and scorpions

The ______________ class within Subphylum Chelicerata is known for having book lungs

False, they use their webs to catch live prey for their young to feed on

True or False:

Spiders use their webs to catch live prey to feed on

1. Myriapoda

2. Crustacea

3. Insecta

Protostomes: Arthropoda:

What are the 3 major classes within the subphylum Mandibulata?

Chilopoda

- centipedes w/ 1 pair of legs per segment

- carnivorous

Diplopoda

- millipedes w/ 2 pairs of legs per segment

- Herbivorous

Arthropoda: Mandibulata:

Within the class Myriapoda, there are 2 major groups of organisms. What are they and how do they differ?

Crustacea

Arthropoda: Mandibulata:

Class ___________ consists of lobsters, barnacle, daphnia, crayfish and the pill bug

Crustacea

Unlike the subphyla Chelicerata that has sucking mouthparts and no antennae, the ______________ class belonging to the subphyla Mandibulata has crushing mouthparts and 2 pairs of antennae (most)

8 appendages

Arthropoda: Mandibulata:

How many specialized appendages do crustacea have?

1. most can fly

2. undergoes metamorphosis

3. has a tympanic membrane

What are the (3) major characteristics of Class Insecta?

Malpighian tubules

Mandibulata: Insecta:

_______________ are structures in insects that excrete waste

90% complete

10% Gradual

________ of insects exhibit complete metamorphosis while _______ of insects exhibit gradual metamorphosis

Siphonaptera

Mandibulata: Insecta:

The order _______________ includes fleas, which are blood-sucking ectoparasites

Diptera

Mandibulata: Insecta:

The order _______________ are major disease carriers

Termites exhibit a symbiotic relationship with microorganisms to digest cellulose

Mandibulata: Insecta:

Termites exhibit a symbiotic relationship with microorganisms to digest cellulose. What type of feeding behavior is seen in order Isoptera?

Body lice, head lice, and crab lice

Mandibulata: Insecta:

What types of lice are included in the order Anoplura?

1. flight

2. small size

3. found everywhere

4. undergoes metamorphosis

Why are arthropods so successful?