Sponges
The meaning of Porifera
What is "pore bearer"
Lacking a respiratory system, flat worms rely on this for gas exchange
What is diffusion
Molluscs have a lined body cavity that holds organs and fluid called this
What is a coelom
Corals secrete this to create reefs
What is an exoskeleton
The name arthropod comes from the fact that their appendages are this
What is jointed
The general characteristic that defines a sponge
What is the lack of true tissues
These are repeating segments of a tapeworm which each contain its own reproductive system, allowing them to reproduce frequently and easily.
What are proglottids.
Having three germ layers (ectoderm, mesoderm, endoderm), like moluscs and most other animals is called this
The stinging cells in cnidarians are called this
What are cnidocytes
The exoskeleton of members of the Arthorpoda phylum is made of this
What is chitin
The process in which sponges eat
What is filter feeding
An earthworm is an example of this phylum
What are annelids
This fold of tissue covers the body of a mollusc and secretes the shell
What is the mantle
This colony of polyps floats on the surface of the water while the tentacles below capture food and can kill a fish with its sting
What is The Portugese Man-O-War
Arthropods have this instead of blood to carry oxygen and nutrients throughout their bodies
What is hemolymph
Reproduction that takes place outside of the animal
What is external fertilization
Round worms grow by doing this with their outer layer (called a cuticle)
What is shed (or molt)
Most mobile molluscs (apart from cephalopods-octopus, squid etc) use this to move.
What is a foot
These are the two body forms found among cnidarians
This member of the Opiliones order of the arachnid group is not actually in the order by which it is named because of its oblong shaped head/body combination
What is daddy longlegs
When a sponge feeds the water enters through this and exits from this
What are the ostia and the osculum
DOUBLE JEOPARDY!!!
These are ways to classify animals (name at least 3)
What are presence/absence of tissues, body symmetry, number of germ layers, body cavity presence/absence, embryological development, growth by molting or cell growth
This is a tongue-like structure with rows of tiny teeth found in the mouths of molluscs that cuts food before it enters the stomach
What is a radula
Cnidarians are classified by these two attributes
What are having radial body symmetry and being diploblastic
The group Pancrustaceans contains these two types of hexapods
What are crustacians and insects