Biology - Chapter 6 Pre Assessment

The circulatory system carries chemical signals known as ​ (a)  

• hormones
• closed circulatory system
• digestive tract
• filter feeding
• flame cells
• gastrovascular cavity
• gizzard
• herbivore
• nerve net
• ventricle

A tubelike digestive space with an opening at each end is called a ​ (a)  

• closed circulatory system
• digestive tract
• filter feeding
• flame cells
• gastrovascular cavity
• gizzard
• herbivore
• nerve net
• ventricle

A chamber that pumps blood out of a vertebrate heart is called a ​ (a)  

• closed circulatory system
• filter feeding
• flame cells
• gastrovascular cavity
• gizzard
• herbivore
• nerve net
• ventricle

Flatworms remove excess water through a system of tubes connected to ​ (a)  

• closed circulatory system
• filter feeding
• flame cells
• gastrovascular cavity
• gizzard
• herbivore
• nerve net

Blood stays inside vessels at all times in a ​ (a)  

• closed circulatory system
• filter feeding
• gastrovascular cavity
• gizzard
• herbivore
• nerve net

an animal that eats plants is called a ​ (a)  

• filter feeding
• gastrovascular cavity
• gizzard
• herbivore
• nerve net

Cnidarians have a simple nervous system known as a ​ (a)  

• filter feeding
• gastrovascular cavity
• gizzard
• nerve net

A ​ (a)   is a digestive space with a single opening

• filter feeding
• gastrovascular cavity
• gizzard

A sponge gets food by ​ (a)  

• filter feeding
• gizzard

leeches get food by...

• filter feeding

• sucking fluids

• eating solid pieces of food