Explanation and several examples of symbiotic relationships

1. Mind Stretcher - Friday
(In India, the chital, a small deer, has trouble
finding enough grass to eat during the dry
season. This deer relies on a certain type of
messy-eating monkey that eats fruit in a tree.
The deer have good eyesight, hearing, and
sense of smell.)
1. How do you think the monkeys benefit the
deer?
2. How do you think the deer benefit the
monkeys?
Monkeys drop fruit and the deer eat it.Monkeys drop fruit and the deer eat it.
Deer act as an alarm system for the monkeys.Deer act as an alarm system for the monkeys.
MutualismMutualism

2. What is symbiosis?
What it means:
A close, long-term association between
individuals of two different species.
Literal definition:
the act of living together

3. What are the different kinds of symbiosis?
Mutualism ParasitismCommensalis
m
both organisms
benefit
one organism
benefits
one organism
benefits
one organism
is unaffected
one organism
is harmed

4. Mutualism: both benefit
Example 1:
Acacia plant and Ants
Ants eat the
sweet
secretion from
the plant.
Ants swarm and
attack any
animal that tries
to eat the plant

5. Mutualism: both benefit
Example 2:
Moray Eel with
Cleaner Fish
Moray Eel gets a
clean mouth Cleaner
Fish gets a meal

6. Commensalism: one benefits, one is unaffected
Example 3:
Cattle with cattle egrets
Cattle stir up
insects as
they eat grass
Egrets hang
around and
eat insects

7. Mutualism: both benefit
Example 4:
Clown fish with anemone
Clown fish gets
protection, nest
site, and food.
Anemone gets
cleaning,
protection, and a
lure to attract fish

8. Mutualism: both benefit
Example 5:
Antelope with Oxbird
Antelope
gets rid of
parasites
Oxbird
gets a
meal

9. Parasitism: one benefits, one is harmed
Example 6:
Taenia worm in human eye
Worm infects
human blood
stream
Human may
go blind

10. Example 7
Fleas and Dogs
The fleas use the
dogs blood as
food.
The dog gets
bites and sores
from the fleas.
Parasitism: one benefits, one is harmed

11. Exit Ticket
 List the three types of symbiosis and give
an example of each from the yellow sheet.