Teacher Answer Key

Ecological Relationships ANSWER KEY

Interacting Species Pair	Actual Ecological Relationship
(name and describe)	
Clip 1:
Tiger Shark/ Loggerhead Turtle	Predation (Shark eats turtle, or tries to)	
Clip 2:
Shark/Jack	Commensalism (Jacks use the shark as a “blind” - to keep out of the view of prey. Shark is neither helped nor harmed)	
Clip 2: 
Shark/Mackerel	Commensalism (Mackerel bump up against the shark’s skin to rid themselves of loose scales and parasites. Shark is neither helped nor harmed)	
Clip 2:
Shark/Shark Suckerfish	Commensalism (suckerfish attaches to shark and gets a free ride. Shark is neither helped nor harmed)	
Clip 2:
Hammerhead Shark/Barberfish	Mutualism (Barberfish benefit the hammerhead by ridding it of parasites and at the same time benefit themselves with a meal)	
Clip 3:
Shark/Fishermen	Competition (sharks are after the same fish as the humans and will often steal the humans’ catch)	

Malaria Student Organizer ANSWER KEY

Mosquito Game:
1. How does the malaria parasite get into a mosquito? (The mosquito draws up the parasite along with a blood meal from an infected person or animal)
2. How does the malaria parasite get into a human? (A mosquito transfers the malaria parasites in its saliva when it bites a human)
3. Which sex of mosquito drinks a blood meal? (Female)

Parasite Game:
4. What two places in the human body must the malaria parasite go in order to reproduce? (Liver and red blood cell)
5. Draw what the malaria parasite looks like before it enters the liver:
(Drawing should appear narrow and snaky)
6. Draw what the malaria parasite looks like after it leaves the liver: 
(Drawing should appear egg-shaped)
7. What is the scientific name of the malaria parasite? (Plasmodium, or Plasmodium falpicarum)