Lab 3 Flashcards
Which two phyla are covered in today’s lab?
Annelida
Echinodermata
What are metameres?
Repeated homologous body segments
What type of skeleton do annelids posses?
Advanced hydrostatic skeleton
Which class of annelids is only found in marine environment?
Polychaeta
What is the name of the segment of the clamworm that contains the mouth?
Peristomium
Name two functions of annelids cuticle.
Structural support
Protection
Which organism(s) form today’s lab have/has parapodia?
Clamworm (Polychaeta)
What is the basic mechanism for respiration in annelids?
Simple diffusion
Which two organisms that we’ll examine today have a clitellum?
Oligochaeta
Hirudinida
Which phylum and class do sea cucumbers belong to?
Class Holothuroidea
Phylum Echinodermata
What is a nephridium?
Mini kidney involved in waste excretion
Do annelids have a closed or open circulatory system?
Closed
Which phylum and class do leeches belong to?
Class Hirudinida
Phylum Annelida
What type of symmetry is displayed by Echinoderms?
Echinoderms= bilateral symmetry
*adult form display pentaradial symmetry
Name three structure associated with the water vascular system.
Ampullae Ambulacral ridge Tube feet Radial canal Madreporite
What are the two sections of a starfish stomach?
Pyloric stomach
Cardiac stomach
Describe one way that you can differentiate between dorsal and ventral side of an earthworm.
Flattened side is the ventral side
Dark like running down would be the dorsal side
What is the function of the gizzard in the earthworm?
Physical digestion (grinding) of the food
What is the function of the seminal receptacles?
Female organs that store sperm after copulation
Which phylum and class does the sea urchin belong to?
Class Echinoidea
Phylum Echinodermata
