Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key


Play button


Play button




Click to flip

25 Cards in this Set

  • Front
  • Back
The layer that gives rise to the muscles, circulatory, reproductive, and excretory systems is the
feeding habits of sponges can be described as
filter feeders
the simplest animals having radial symmetry are
cnidarians have two basic body types, a medusa and a
body symmetry of a cnidarian is
radial in both medusa and poly stages
some flatworms have clusters of nerve cells that control the nervous system called
flatworms detect changes in the amount of light in the environment using groups of cells called
in a pseudocoelom, mesoderm partially lines the
body cavity
the animal with a true coelom is the
mollusks have
a true coelom
the thin layer of tissue that covers a mollusks body is called the
appendages of arthropods are
jointed and extend from the body wall
one similarity between a spider and crayfish is that both have
a cephalothorax and an abdomen
the body of an insect is divided into a
head, thorax, and abdomen
the skeleton of an echinoderm is an
in an echinoderm, the structure that operates like a living suction cup is the
tube foot
in chordates, the long supporting rod that runs through the body is
the notochord
which characteristic is present in all chordates?
ALL OF THE ABOVE (tail, notochord, pharyngeal pouch)
a vertebrate is any chordate that has
a backbone
two groups of nonvertebrate chordates are
tunicates and lancelets
if an animal has 3 germ layers, bilateral symmetry, and no coelom, then it is a
the most likely ancestors of animals are
animal like protists
cnidarians and chordates share the characteristic of
extra cellular digestion
spiders respire through specialized structures called
book lungs
one animal that has a digestive tract, ectoderm, endoderm, and mesoderm are