Platyhelminthes, Nematodes,Annelids
molluscs
porifera
Spelling bee
100
What is the opposite of parasitic?
Free Living
100
True or false: Molluscs are only found in aquatic environments?
False They are mostly aquatic, though some live on land
100
What is regeneration?
regeneration occurs when part of an organism is cut then grows back naturally, sponges are known for their regeneration abilities
100
portion of this unit that discusses snails, squid etc.
molluscs
200
What part of a worm can grow back if cut off?
The tail
200
Do all molluscs have lungs?
No, mollusks that live on land do while aquatic molluscs have gills
200
Define "sessile"
Sessile: fixed to one place and doesn’t move
200
producing young by means of eggs which are hatched after they have been laid by the parent, molluscs do this
oviparous
300
Tapeworms live in what organ of the host?
The intestine
300
Name one of the three categories of molluscs.
(NOT specific animals)
Molluscs fall into three categories:
Bivalves
Gastropods
Cephalopods
300
Why are sponges called "porifera"
Because sponges have bodies that are covered with holes or pores that allow water to flow through them.
300
general term for oysters, mussels, clams, and scallops
bivalve
400
What vital function does cephalisation relate to
Interaction
Cephalisation: nerve sensors and sense organs located at one end of the body
400
What aspect of nutrition makes molluscs different from other invertebrates?
They have a complete digestive system
400
True or False:Sponges have tissues but not organs. (If false, you must also say WHY it's false)
Sponges have neither tissues nor organs.
400
general name for things like snails or slugs
gastropod
500
Define nematode
Nematodes are roundworms without segmented bodies.
Some, like heartworms, are parasitic while others are free living.
500
What is another name for the external layer that surrounds their skin and forms their body?
The visceral mass (not shell because shells can be internal OR external)
500
What vital function is associated with the Osculum?
Nutrition, the osculum is the large hole at the top of a Porifera that releases water and waste substance
500
general name for things like squid or octopus
cephalopod