Circulatory systems

What is the function of the heart?

• to move the blood

• to control your body

• to produce the blood

• to feel emotions

• this is an open circulatory system

• this a closed circulatory system

• this is a xylem

• this is a phloem

• this is a blood

Which one of these is not a part of circulatory system?

• heart

• blood vessels

• blood

• root

Which one of them has an open circulatory system?

• human

• insect

• earth worm

• bird

• mammal

Which one of them has a closed circulatory system?

• insect

• mollusk

• spider

• mammal

How many chambers in the heart of fish?

• 1

• 2

• 3

• 4

The main function of circular system is to

• digest the food

• transport materials

• protect the body

• move the body

• to think