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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

What is the largest class of porifera?

demospongia

Most bivalves filter food out of the water using _______ and ________.

cilia and mucus

Kingdom Animalia is monophyletic. (T/F)

True

In annelids, __________ are connected together.

segments

Do all Cnidarians have both the polyp and the medusa stage?

No

What are 3 basic mollusc characteristics?

  1. a foot for movement
  2. radula for feeding
  3. a mantle to create the shell

What type of animal are earthworms?

annelids

In Ctentophores, ______ is used for movement and the _________ is used for balance


cilia


statocyst

What is a monogenea?

a parasite of fish that attaches to their gills and feeds on their blood

What do bivalves use to open and close their shell?

adductor muscles to close them


dorsal ligaments to open them

What does a syncytial epidermis mean?

there is no serpeation between the nuclei

Where can nematocysts be found on Cnidarians?

on the tentacles or in the gastrovascular cavity of many Scyphozoans

What is one thing Protosomia and Deuterostomia have in common?

number of tissue layers

If an animal is sessile and able to detect things from all around, it is most likely which group?

Radiata

Which of the following are NOT hermaphroditic?



  • comb jellies
  • sponges
  • scyhpozoa
  • earthworms

scyphozoa

What is not a new development in Platyhelminthes?

incomplete digestive track

In annelids, what is the reproductive structure used to secrete a cocoon for the developing eggs?

Clitellum

What is a synapomorphy of Bivalvia?

Two shells

Give a description of a nematode:

unsegmented worms covered by a cuticle

In molusks, the shells is secreted by what?

the mantle

Polychaete can be classified by the presence of what?

Parapodia

What is the correct path of water flow through a sponge?

Ostium, spongocoel, osculum

What do Cephalopods not have?

a very long larval stage

Gastrulation leads to the formation of..

germ layers

How many hosts does an indirect life cycle have?

more than one

How many life cycles does a direct life cycle have?

one

Does asexual reproduction occur in the indefinitive host?

NO

What organism is responsible for coral reef structure and foundation?

anthozoa

What do sponges NOT do for reprodution?

release both sperm and egg into the water column

What are 4 characteristics of Porifera?

  • sessile
  • aquatic
  • sexual and asexual
  • no tissue organization

What do Ctenophores use to capture prey?

colloblasts

What is a major trait of the class Cephalopoda?

closed circulatory system

Do molluscs have a circulatory system?

no

The phylum annelida is made up of what type of worms?

segmented

What are setea used for in annelids

movement

The __________ produces the cocoon and fertilization takes place.

clitellum

What does endemic mean?

native

What is a short setea used for?

burrowing