Good Buddies!





Symbiosis is a close relationship between two or more different species.



There are three types of symbiosis we will discover:


Commensalism—A relationship where one species obtains food or shelter from the other species. Does not harm or help the other species.


Mutualism—A relationship where both species benefit from the relationship.


Parasitism-- A relationship between two species in which one species (the parasite) nourishes itself to the disadvantage of the other species (the host).


Today you will be given a card with a picture and name of a particular species.  Using the following link--,


you will find your “buddy”, the other person in the class with whom you have the symbiotic relationship with.


Using that link you will answer the following questions:


Ø      What type of symbiosis is our relationship?

Ø      Why do we live together?

Ø      What advantages and disadvantages do we provide for each other?

Ø      What would happen if one of us were to become extinct?


You and your buddy will then give a short presentation to the class explaining what your relationship is.




Now the fun part!


1.       You will be divided up into groups of 5-6 and will be given a deck of the “Good Buddies” cards.

2.       Heard of Old Maid?  This is it!  One person will deal out all the cards.  Don’t show anyone your hand!

3.       Play starts to the left of the dealer and rotates in a clockwise manner.

4.       Each player draws one card from the player to his/her left.

5.       After that player has drawn a card, he/she may lay down all the cards that form symbiotic relationships.  For example, if you have a yucca plant and draw a yucca moth, you may lay those cards down because they form a symbiotic relationship.

6.       When a player does not have any cards left, the game is over.  The person with the most number of pairs is the winner!  One player will be left with the “NO BUDDY” card.  This acts like the “Old Maid” card; it doesn’t have a match. L





1.       Define symbiosis, commensalism, mutualism, and parasitism.

2.       Give two examples of pairs of organisms that have these symbiotic relationships: commensalism, mutualism, and parasitism and explain the relationship.

3.       With a buddy, pantomime (act out) each of these three concepts: commensalism, mutualism, parasitism.







 Developed by: K. Gooden