Test #8 (0ver lab 7) Flashcards
Earthworm class name
Oligochaeta
Leech class name
Hirudinea
Members of phylum Mollusca
Classes: Polyplacophora, Gastropoda, Bivalvia, and Cephalopoda
Nudibranch class name
Gastropoda
chitons class name
Polyplacophora
Snail/ Slug Class name
Gastropoda
What is an adaptive function of the shell of chitons?
defense
How many plates in chitons (polyplacophora) shell?
8
why are nudibranchs so brightly colored?
to warn predators that they are dangerous
What organs lie within the visceral mass?
heart, digestive organs, excretion organs, and reproductive organs
How is the foot modified in Class Cephalopoda (squid)?
The foot is modified into tentacles
What is the siphon used for?
jet propulsion
How can you distinguish parapodia from setae?
Setae hang off the parapodia tubes
What classes are in Phylum Annelida?
Classes: Polychaeta, Oligochaeta, and Hirudinea
Sandworm class name
Polychaeta
what organs are suspended within the coelom?
Intestine, nephrostome, dorsal vessel, and metanephridium
What type of sexuality do leeches (class Hirudinea) have?
Hermaphroditic
How does Class Cephalapoda (Phylum Mollusca) defend itself?
use chromatopores to mimic color and texture of surroundings, spraying ink to surprise and temporary blind predators
How do Class Gastropoda (Phylum Mollusca) defend themselves?
nudibranchs sting predators, hard exterior shell gives protection
How do Class Bivalvia (Phylum Mollusca) defend themselves?
hinged shell clamps shut to avoid predators
How do Class Polyplacophora (Pylum Mollusca) defend themselves?
8 calcareous dorsal plates, suction to rocks, protecting soft tissue
2 classes from lab 7 that filter feed?
Class Bivalvia and Class Polychaeta
Previous class that filter feeds?
Porifera
4 adaptations that Class Ceohalopoda has for hunting
Siphon (jet propulsion)
Chromatophores (camouflage)
Stratocysts (sense sound and gravity)
Cephalization (most intelligent invertebrate)
polyplacophora feeding method
herbivores, algae from rocks
Gastropoda feeding method
fungi
Bivalvia feeding method
filter feeding
What structure defines Phylum Annelida?
segmented body
Foot use in Polyplacophora/ Gastropoda/ Bivalvia
Polyplacophora= Slow movement Gastropoda= movement Bivalvia= digging
Two types of muscles that allow annelids to contract and lengthen bodies?
Circular and longitudinal
What is segmentation’s function in class Polychaeta, Oligochaeta, and Hirudinea?
Polychaeta=movement, defense (poisonous), and filter-feeding
Oligochaeta=movement and friction
Hirudinea=no setae
What is the function of the parapodia?
Swimming, respiration,
Do you see the bodies of nematodes contract?
no
What type of muscles do nematodes lack?
Circular
4 Characteristics that Phyla Mollusca, Annelida, Platyhelminthes and Nematoda share?
Triploblastic, heterotrophic, eukaryotic, and bilateral symmetry
What body plan does Platyhelminthes have?
Acoelomate
What body plan does Nematoda have?
Pseudocoelomate
What body plan do Annelida and Mollusca have?
Coelomate
