Platyhelminthes R & Q

Read: https://www.ck12.org/book/cbse_biology_book_class_xi/section/4.5/

Answer the following questions in a text box:

1. Why do flatworm represent a major evolutionary advance over cnidarians?

2. What role do most flatworms play in the ecosystem?

3. Flukes live in the _____________________________ system of the host; tapeworms live in the _____________________ system. 

4. Free living flatworms eat what? 

5. How do flatworms accomplish gas exchange?

6. List 2 facts from each video: 

a. 

b. 

7.  What can flatworms do when food is scarce that other animals can't? What characteristic of flatworms let's them engage in this behavior?