1. Interactions Between Species

2. Engage
Symbiotic Circle

3. Explore Clip 1 Clip 2 Clip 3 Write down in your own words the way the organisms relate to one another in the videos Who is benefited, harmed, or neither?

4. Explain Symbiotic Relationships
Commensalism: One organism is benefitted by relationship and the other is neither harmed nor benefitted.
Mutualism: Both organisms are benefitted by relationship and neither are harmed
Parasitism: One benefits and the other is harmed.
Predation: One organism preys or hunts the other organism.

5. Parasitism Leeches attach to host organism and suck its blood!
The host is harmed and the leech is benefited by a free meal!

6. What’s the relationship? Woodpecker and Tree ants
In the spring, the southern Rufous woodpecker and the black tree ant truce for a short while during egg laying.
The ants protect the bird’s eggs from attacks by the nest
The bird protects the ants’ nest from other birds while the chosen bird is nesting there.

7. What’s the relationship? Cattle Egrets and Cattle
Livestock movement cause insects to stir up in grazing fields.
As the insects are stirred up, the cattle egrets following the livestock catch and feed upon them.

8. What’s the relationship? Oxpecker and Zebra
Oxpeckers obtain a meal while the Zebra is freed of lice, ticks, and flees.

9. What’s the relationship? Plover Bird and Crocodile
While obtaining a meal, the Plover bird cleans the crocodile’s teeth and helps prevent infections.

10. Tick on a Human

11. Elaborate Malaria Virtual Tour
Malaria Life Cycle

12. Evaluate
A symbiotic relationship that occurs when both member benefit is called?

13. Spanish Moss on Tree
The Spanish moss benefits, but the tree is neither harmed or benefited.

14. Which best represents mutualism?
Bull snake/mouse
White-tailed deer/grass
Hummingbird/blossom
Spadefoot toad/cricket

15. What symbiotic relationship is it?
An oakworm catepillar feeds on the leaves of an oak tree. This type of interaction is: