Invertebrates are categorized by the fact that ther are _____________, ________________
multicellular, heterotrophic, eukaryotes
how do heterotrophs get their food?
they must consume others
A hollow ball of cells
The development of the layers of a blastula
The cell within the tissue layers is called a ?
___ ______ helps with the development of a body form
What is considered to be the common ancestor of animals?
A lack of symmetry is considere _________
based on 4 or 5, this symmmetry is based on an axis
mirror image symmetry
The top/back side of an animal is called
the bottom/stomach side is called
which animals have a anterior and posterior end
the head of an animal is called
The tail of an animal is called
the development of the head is called?
An animal with 2 germ layers is called?
Animals with all 3 germ layers are called?
A true body cavity is called a _________
To be a true coelom there needs to be a _______________________________
completely lined cavity
when the mesoderm is only partially lined
an animal without a coelom is called
In a _________ cleavage is spiral and determinant
In a ____________ cleavage is radial and indeterminant
THe splitting of initially solid masses of mesoderm to form the coelomic cavity is called _______ development
in deuterostome development the formatio of the body cavity is described as __________
What develops first in a protostome
What develops first in a deuterostome
Invertebrates account for __%of species
The first category of invertebrates are ________
An example of a porifera is a
Sponges cant move which means they are
collar cells are also called
an example of a filter feeder is a
which invertebrate has no tissue, organs or systems?
how do sponges get their food>
what is the purpose of choanocytes?
generates a water current
2nd group of invertebrates
An example of cnidaria is
cnidarians have ____________ symmetry
how many layers of cells do cnidarians have?
what are the two forms of cnidarians
polyp and medusa
unique cells in cnidarians that function in defense
Hydrozoa, scypnozoa, cubozoa and anthozoa are examples of ?
Platyhelminthes are also known as
where do flatworms live?
tapewoms, flukes and planaria are examples of
which invertebartes have only one opening?
can planarians regenerate?
Turbelleria, monogenea, tremotoda, and cestoda are examples of?
what is an examle of a parasitic flatworm?
Rotifers reproduce by
probiscis are also known as
which category of invertebrates have a muscular foot, visceral mass and a mantle
examples of gastropods include:
slugs, snails, and conches
examples of bivalves include
clams, oysters and scallops
examples of cephlapods include:
octopus and squid
the 1st animals with a simple brain are
what kind of circulatory system do mollusks have
the name of mollusk's larvae is
about 3/4 of all mollusks are
In a process called ___________ the animals anus and mantle end up above the head
segmented worms are called
oligochaeta,polychaeta and hirundinea are examples of?
bristles made of chitin are called
examples of annelids are
leeches and earthworms
nonsegmented pseudocoelomates are called
whats found in soil and eggs enther children's mouth
the most common roundworm is the _____
what is found in uncooked pork
common in warm climates, found in contaminated soil and enters body through feet when people walk barefoot
Segmented coelomates that have an exoskeleton and jointed apppndages
_ out of _ species is an arthropod
early arthropods were called
1st animals with jointed appendages
all arthropods have an _______________
the 3 fused body parts are called
specialized jaws are called
uses ___________ _____ for excretion of waste
metamorphosis includes _ stages
incomplete metamorphosis includes _ stages
egg, larvae,pupa, adult
incomplete metamorphosis is
egg, nymph, adult
blood fluid in arthropods is called
spiders, ticks, mites, scorpions, and horshoe crabs are examples of what subphylum?
millipedes and centipedes belong to what subphylum?
insects belong to what subphylum?
barnacles are in what subphylum?
Echinoderms are _______ and ___________
chordates and deuterostome
examples of echinoderms are
sea stars, sea cucumbers and sea urchins
a network of hydraulic canals branching inot tube feet that function in locomotion feed and gas exchange is what?
water vascular system