1. Symbiotic Relationships Vocabulary
Plicker Quiz Formative Assessment
© Copyright 2015 – All rights reserved.

2. Mutualism Commensalism Parasitism Competition
What symbiotic relationship is this?
Aleria Jensen, NOAA/NMFS/AKFSC, via Flickr (CC BY 2.0)
Barnacles are arthropods that cannot move on their own, so they hitch a ride on whales and filter out food from water as it passes by. The whales are unaffacted by the barnacles.
Barbara LaCorte/Linda Flegal, Channel Islands Naturalist Corps, via NOAA (Public Domain)
Mutualism
Commensalism
Parasitism
Competition
© Copyright 2015 – All rights reserved.

3. Mutualism Commensalism Parasitism Competition
What symbiotic relationship is this?
Sajjad Fazel, Wikimedia Commons (CC BY-SA 3.0)
Mutualism
Commensalism
Parasitism
Competition
“Debivort,” Wikimedia Commons (CC BY-SA 3.0)
Flowers provide nourishing nectar and pollen to bees. In return, bees carry pollen from flower to flower, pollinating them so that they can reproduce.
© Copyright 2015 – All rights reserved.

4. Mutualism Commensalism Parasitism Competition
What symbiotic relationship is this?
Peter Trimming, Geograph (CC BY-SA 2.0)
Don DeBold, Flickr (CC BY 2.0)
Mutualism
Commensalism
Parasitism
Competition
Bobcats and red foxes eat similar foods. They sometimes live in the same habitats and eat small rodents and reptiles. Sometimes, they defend their territories from each other because there is not enough food for both of them.
© Copyright 2015 – All rights reserved.

5. Mutualism Commensalism Parasitism Competition
What symbiotic relationship is this?
Freshwater leeches are segmented worms that latch onto fish or other animals and suck their blood. The fish are harmed, but are not killed.
The leeches drink blood until they are full, and then they let go.
Mutualism
Commensalism
Parasitism
Competition
USGS, via Wikimedia Commons (Public Domain)
© Copyright 2015 – All rights reserved.