- which organism is an example of the class chondrichthyes?
- which organism is NOT a member of the class reptilia?
- feather stars and sea lilies are members of what class?
- what is a minor, but interesting, form of reproduction many echinoderms are capable of?
- Of the characteristics listed below, which one is unique to Phylum Porifera?
- The main body cavity of a cnidarian is termed what?
- what type of circulatory system pumps hemolymph that bathes the organs and tissues with a simple heart through a few open blood vessels (the heart does NOT form a closed circuit with the blood vessels)?
- What is the gel-like substance that composes the inner matrix of a sponge and contains specialized cells and spicules?
- In a cnidarian, tentacles are typically arrayed around what?
- In cephalopods, the many tentacle appendages are a modification of what major mollusk feature?
- the spines on an echinoderm (such as on a sea urchin or starfish) are what?
- the majority of mammals bring forth young in what way?
- In many sponges, during sexual reproduction, _________are released into the water and then taken into the mesohyl by a member of the same species, where th ________are fertilized.
- What type of animals can be found in the class Ophiuroidea?
- Cnidarians are simple in structure but are composed of true ____ , though no ______ are present.
- The _______ form of cnidarians is typically sessile.
- Phylum Porifera (sponges) belongs to which kingdom of life?
- What type of cell is characteristic of the phylum Cnidaria?
- what type of organisms can be found in the class Echinoidea?
- to which part of a bird's skeleton do the flight muscles attach?