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zoology final crossword puzzle

cheyenne cooley
Across
One of the 3 cell layers that gives rise to muscles, circulatory, reproductive, and excretory system
Which kingdom contains multicellular heterotrophs without cell walls
Several different classes make a
The first organisms on earth were most like todays
During the jurassic and cretaceous periods, the dominant land animals were
In taxonomy, a group at any level of organization is referred to as
Animal with distinct left and right sides has
Invertebrate that has radial symmetry
Earth's most recent era
To compare the relative ages of fossils, scientists sometimes use an easily recognized species called an
Small aquatic organisms move oxygen and carbon dioxide through their skin by what process
How many taxonomic categories were there
Simplest animals to have body symmetry
Organisms that spend their adult life attached to one spot
Cnidarians have two basic body types, a medusa and a
Down
Animals that are warm blooded, and produce milk for their young are grouped in the class
Portuguesa man of war is a member of what class of cnidarians
All organisms in the kingdoms protista, plantae, fungi, and animalia
An analysis of derived characteristics is used to generate a
Animal Y has 3 germ layers, bilateral symmetry, and no coelom what is animal Y
The length of time required for half the radioactive atoms in a sample to decay
The process by which two species evolve in response to each other
Nerve cells of cnidarians make up a
Feeding habits of sponges
In a protostome, the blastopore becomes a
Body cavity that forms between the germ layers is called
Based on their names you know that batons papio annubis and papio cynocephalus do not belong to the same
Some type of body symmetry is found in all invertebrates except
Most general category in Linnaeus's system
The second part of a scientific name is unique to each