Show:
simple invertibrates
mollusks and annelid worms
Arthropods
Echinoderms
chapter review
100
what are some examples of invertibrates
What is a grasshopper,,clams,earthworms,jellyfish
100
Snails,clams,oysters,squids and octopuses are all...
What is a mollusk
100
What is the external structure that covers the outside of the body?
What is an exoskeleton
100
What is the water vascular system?
What is a system of canals filled with fluid
100
which insects go tgrough complete metamorphosis and which go through incomplete metamorphosis?
What is cockroaches and grasshoppers go through incomplete, butterflies go through comlete
200
A________ is a pouch lined with cells that release chemicals that break down food into smaller particles
What is a gut
200
In an_____circulatory system,a simple heart pumps blood through blood vessels and empty into sinuses,or spaces in the animals body
What is a open
200
A compound eye is an. Eye that is made up of many____
What is a light sensitive unit
200
True or false like sea urchins and sand dollars sea cucumbers have no arms?
What is true
200
describe how a sponge eats.
What is water carries food into the pores. inside the sponge,collar cells remove food food from the water. the water exists through an osculum
300
A_____is the body cavity that surrounds the gut
What is a coelom
300
An earthworm can have ___to____segments
What is 100 to175
300
What is an antenna
What is a feller that sences touch,taste,or smell
300
What are brittle stars and basket stars relatives?
What is a sea star
300
invertibrates do not have a...
What is a backbone
400
A______is a consentrated mass of nerve cells
What is a ganlion
400
Some doctors use leeches to reduce ______after surgery
What is swelling
400
They'd record # of legs ona millipede is____legs
What is 752 legs
400
Sea urchins and sand dollars use their spines for defense and_____
What is movement
400
repeating____ make up the bodies of annelid worms
What is segments
500
____are the simplest invertibrates
What is a sponge
500
What does polychaetes mean?
What is many bristles
500
What are the two main body parts of an arachnid?
What is cephalothorax and abdomen
500
Feather stars do not have a what?
What is a stalk
500
encinoderms have spines on their what?
What is an exoskeleton