12R Transport Systems

Which of the two organisms shown on the previous slide needs a circulatory system? Why?

How does the size of an organism influence its need for a circulatory system?

How does the metabolic demand of an organism influence its need for a circulatory system?

How does the SA:Vol of an organism influence its need for a circulatory system?

What is a circulatory system? Come up with a general definition...

What are some possible advantages and disadvantages of closed circulatory systems?

What are some possible advantages and disadvantages of open circulatory systems?

What are some possible advantages and disadvantages of a single circulatory system?

What are some possible advantages and disadvantages of a double circulatory system?

In a closed circulatory system, blood is kept inside blood vessels. Suggest two advantages of keeping blood inside vessels.

Fish have a single, closed circulatory system. State the meaning of the terms single circulatory system and closed circulatory system.

Give three reasons why a large, multicellular animal, such as a mammal, needs a transport system.