2. Flatworms, Nematodes, Molluscs Flashcards
(20 cards)
Define Triploblastic
Three germ layers
Name a phylum that includes triploblastic organisms that do NOT have a coelom
Platyhelminthes
Which of the following is NOT a Mollusc: Chiton, Snails, Planaria, Cuttlefish
Planaria
Which of the Following is a function of auricles
a) Used for touch
b) Used for hearing
c) Used for olfaction
d) a and c are correct
e) b and c are correct
A
Name a specimen from today’s lab that doesn’t have a circulatory system
Roundworm
What are chromatophores
Dark, pigment-concentrated spot which allows the organisms to change color
What is the role of pneumostomes
Allows air to enter vascularized section of the mantle cavity
What is the function of the radula
Rasping organ with teeth on it
What is the role of a siphon
A tube like structure used in locomotion in squids
Which specimen from the phylum mollusca has a parasitic larval stage
Freshwater mussel
Do all molluscs have shells
No
What is the role of rostellum
The hooks in rostellum help adhere to the host’s intestine
The body of a tapeworm can be divided into three main sections
Strobila, neck, scolex
Name the process that forms proglottids
Strobilation
What symmetry do all the phyla in today’s lab have
Bilateral symmetry
Name 2 specimens that use a muscular foot for locomotion
Freshwater mussel, land snail
What is the oldest part of the snail shell
the apex
What is the oldest part of the mussel shell
umbo
What is the purpose of the squids’s ink sac
eject ink through siphon to startle predators
Which organisms from today’s lab breathe with gills
mussel, squid
