Lab 3 Pre-lab Quiz Flashcards
- Which two phyla are covered in today’s lab?
Annelida and Echinodermata
- What are metameres?
Repeated, homologous body segments
- What type of skeleton do annelids posses?
Hydrostatic skeleton
- Which class of annelids is only found in marine environments?
Class Polychaeta: Clamworm
- What is the name of the segment of the clamworm that contains the mouth?
Peristomium
- Name two functions of an annelid’s cuticle:
Structural support and protection from the environment.
- Which organism(s) from today’s lab have/has parapodia?
Polychaetes (Clamworms)
- What is the basic mechanism for respiration in annelids?
Cutaneus Respiration
- Which two organisms that we’ll examine toady have a clitellum?
Earthworm and Leech
- Which phylum and class do sea cucumbers belong to?
Phylum Echinodermata
Class Holothuroidea
- What is a nephridium?
A “mini-kidney” that is involved in waste excretion
- Do annelids have a closed or an open circulatory system?
Closed Ciculatory System
- Which phylum and class do leeches belong to?
Phylum Annelida
Class Hirudinida
- What type of symmetry is displayed by echinoderms?
Pentaradial symmetry
- Name three structures associated with the water vascular system.
Madreporite, Tube Feet, Ampullae
16 What are the two sections of a starfish’s stomach?
Pyloric and Cardiac stomach
- Describe one way that you can differentiate between the dorsal and ventral side of an
earthworm.
Locate the dorsal side by the body shape (flattened side is ventral) and/or by the dark “line” running down 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?
Phylum Echinodermata
Class Echinoidea
