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39 Cards in this Set
- Front
- Back
What is Cephalization? |
a concentration of nervous tissue in the anterior regions that allows for controlled forward motion |
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What is the largest class of porifera? |
demospongia |
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Most bivalves filter food out of the water using _______ and ________. |
cilia and mucus |
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Kingdom Animalia is monophyletic. (T/F) |
True |
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In annelids, __________ are connected together. |
segments |
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Do all Cnidarians have both the polyp and the medusa stage? |
No |
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What are 3 basic mollusc characteristics? |
|
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What type of animal are earthworms? |
annelids |
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In Ctentophores, ______ is used for movement and the _________ is used for balance
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cilia statocyst |
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What is a monogenea? |
a parasite of fish that attaches to their gills and feeds on their blood |
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What do bivalves use to open and close their shell? |
adductor muscles to close them dorsal ligaments to open them |
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What does a syncytial epidermis mean? |
there is no serpeation between the nuclei |
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Where can nematocysts be found on Cnidarians? |
on the tentacles or in the gastrovascular cavity of many Scyphozoans |
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What is one thing Protosomia and Deuterostomia have in common? |
number of tissue layers |
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If an animal is sessile and able to detect things from all around, it is most likely which group? |
Radiata |
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Which of the following are NOT hermaphroditic?
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scyphozoa |
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What is not a new development in Platyhelminthes? |
incomplete digestive track |
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In annelids, what is the reproductive structure used to secrete a cocoon for the developing eggs? |
Clitellum |
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What is a synapomorphy of Bivalvia? |
Two shells |
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Give a description of a nematode: |
unsegmented worms covered by a cuticle |
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In molusks, the shells is secreted by what? |
the mantle |
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Polychaete can be classified by the presence of what? |
Parapodia |
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What is the correct path of water flow through a sponge? |
Ostium, spongocoel, osculum |
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What do Cephalopods not have? |
a very long larval stage |
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Gastrulation leads to the formation of.. |
germ layers |
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How many hosts does an indirect life cycle have? |
more than one |
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How many life cycles does a direct life cycle have? |
one |
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Does asexual reproduction occur in the indefinitive host? |
NO |
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What organism is responsible for coral reef structure and foundation? |
anthozoa |
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What do sponges NOT do for reprodution? |
release both sperm and egg into the water column |
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What are 4 characteristics of Porifera? |
|
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What do Ctenophores use to capture prey? |
colloblasts |
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What is a major trait of the class Cephalopoda? |
closed circulatory system |
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Do molluscs have a circulatory system? |
no |
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The phylum annelida is made up of what type of worms? |
segmented |
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What are setea used for in annelids |
movement |
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The __________ produces the cocoon and fertilization takes place. |
clitellum |
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What does endemic mean? |
native |
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What is a short setea used for? |
burrowing |