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.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.

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.
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

Biology Ch. 6.3

Kingdom Animalia - Invertabrates

Animal Kingdom Includes the very small to the very large organisms on Earth. Animals are multicellular eukaryotes, heterotrophic, and reproduce sexually.
Incomplete Digestive Tract Only one opening (food & wastes use the same opening).
Complete Digestive Tract Separate openings for food & wastes.
Asymmetrical Body Irregular shape (i.e. sponges, who are the simplest animals).
Symmetrical Body Most animals are balanced in their shape.
Coelom A fluid-filled body cavity. The presence of a coelom allows for the development of more complex organ systems. Animals with a coelom = coelomates Animals without a coelom = acoelomates
Reproduction All animals reproduce sexually Some also reproduce asexually Some are hermaphrodites = have both male & female reproductive organs
Invertebrate Lack of internal structures Reproduction includes sexual & asexual Some are coelomate (i.e. earthworm) & some are acoelomate (i.e. flatworm)
8 Phyla of Invertebrates 1.Porifera 2.Cnidaria 3.Platyhelminthes 4.Nematoda 5.Annelida 6.Mollusca 7.Echinodermata 8.Arthropoda
Phylum Porifera Means “pore-bearing” Example: Sponges
Phylum Cnidaria ` Means “thistle” Examples: Jellyfish, corals, sea anemones, hydras
Phylum Platyhelminthes Means “flat, wide worms” Examples: Tapeworms, flukes, planarians
Phylum Nematoda Means “thread-like” Examples: Pinworms, hookworms
Phylum Annelida Means “ring” Examples: Earthworms, leeches, tubeworms
Phylum Mollusca Means “soft-bodied” Examples: clams, oysters, squids, octopi, snails, slugs, scallops
Phylum Echinodermata Means “spiny-skinned” Examples: starfish, sea cucumbers, sand dollars, sea urchins
Phylum Arthropoda The MOST successful phylum!! Over 1 million species have been identified. Very diverse – some live at the bottom of the ocean, and some float in the air.
Arthropods Have jointed appendages. Have bilateral symmetry. Have a coelom. Have a “tube within a tube” digestive system. Reproduce sexually.
Exoskeleton A rigid, jointed external skeleton. Is waterproof and protects against water loss. They must shed their exoskeleton in order to grow.
Insects They have many adaptations for feeding. Most are small in size, allowing them to hide. The nature of their body segments & attached appendages. Their well-developed nervous system. Their structures & functions related to feeding themselves.
Mimicry The ability to look like something else.
Created by: Inkina