Busy. Please wait.

show password
Forgot Password?

Don't have an account?  Sign up 

Username is available taken
show password


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.

By signing up, I agree to StudyStack's Terms of Service and Privacy Policy.

Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
remaining cards
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
restart all cards

Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

Lewis Invertebrates

animal that eats only plants or parts of plants; has large molars for grinding plant parts herbivore
animal that eats only other animals or the remains of other animals; has large, sharp canine teeth and strong jaw muscles for tearing flesh carnivore
animal that eats both plants and animals; has a variety of teeth for eating both plant and animal parts omnivore
animal with a backbone vertebrate
animal lacking a backbone invertebrate
any structural characteristic or behavioral change that helps an organism survive in its particular environment adaptation
animals that have body parts arranged in a circle around a center point radial symmetry
animals with bodies that can be divided into right and left halves that are nearly mirror images of each other bilateral symmetry
organisms that have no definite shape asymmetry
organisms that cannot make their own food heterotrophs
organisms that are able to produce their own food autotrophs
organisms that remain attached to one place during their lifetime sessile
sharp, pointed structureson the body of a sponge that are used to protect the sponge spicules
animal that produces both sperm cells and egg cells in the same body hermaphrodite
thin layer of tissue that covers the body organ's of a mullusk; secretes teh shell or protects the body of mollusks without shells mantle
organs in which carbon dioxide is exchanged for oxygen in the water gills
blood circulation system in which blood moves through vessels and into open spaces around the body organs open circulatory system
tongue-like organ with rows of teeth radula
blood circulation system in which blood moves through the body in a series of closed vessels closed circulatory system
bristlelike structures used for movement and to hold onto the soil setae
sac used for storing digested food crop
muscular structure used for grinding soil and bits or organic matter gizzard
jointed structures; includes legs, antennae, claws, and pincers appendages
hard, outer covering that protects and supports the body of an arthropod exoskeleton
process in which the exoskeleton is shed and replaced with a new one molting
openings on the abdomen and thorax through which air enters and waste gases exit the insect's body spiracles
process in which many insect species change their body form to become adults metamorphosis
hollow, thin-walled tubes ending in suction cups that are used for movement in echinoderms tube feet
network of water-filled canals used for movement, capturing food, releasing wastes, and exchanging gases in an echinoderm water vascular system
Created by: lewisch