Invertebrates Flashcards
(30 cards)
Animals that eat only plants?
Herbivores
Animals that eat only other animals?
Carnivores
Animals that eat both plants and animals?
Omnivores
This is the top of an animal?
Dorsal
This is the bottom of an animal?
Ventral
This is the front of an animal?
Anterior
This is the back of an animal?
Posterior
This is a web of interconnected nerve cells. Does simple regulation to coordinate movement of the animals body. It is not a brain.
Nerve net
Structures are modified to do one certain job better or more efficiently.
Specialization
Assigning small jobs to do a whole life activity.
Division of Labor
Digestion takes place outside of the cells.
Extra-cellular digestion
Digestion takes place inside the cells.
Intra-cellular digestion
This organ helps pull food into the mouth of an earthworm.
Pharynx
An earthworm uses this to grind its food.
Gizzard
In a earthworm the_____ stores food waiting to enter the gizzard.
Crop
This is a long tube where food is broken down chemically and diffuses into blood vessels.
Intestine
What are the stages of complete metamorphosis?
egg, larva, pupa, adult
Spiders use these to breathe.
Book Lungs
This is a thin tissue between the shell and the soft body of a mollusk. Produces a new layer of shell.
Mantle
How many openings does a one way digestive system have?
Two (2)
In a ____ digestion system food enters through the mouth and wastes are eliminated back through the same mouth,
2-way
This makes a mucus ring that slides down the earthworm carrying fertilized eggs.
Clitellum
In a ____ circulatory system, blood leaves the blood vessels and flows around the body’s organs.
Open
A closed circulatory system means the blood__________________________.
moves through tubes called blood vessels.