Mutualism
Parasitism
Symbiosis
Commensalism
Predation
100
C. Mutualism
A bird eats the insects from the alligators teeth. What relation describes what is happening? A. Parasitism B. Commensalism C. Mutualism D. Symbiosis
100
B. Parasitism
Tapeworms are segmented flatworms that attach themselves to the insides of the intestines of animals such as cows, pigs, and humans. What relationship is the Tapeworm? A. Mutualism B. Parasitism C. Symbiosis D. Commensalism
100
A. Commensalism
A mosquito bites a human. What is the relationship between these two species? A. Commensalism B. Predation C. Mutualism D. Symbiosis
100
B. Commensalism
The bird moves about in the pastures and follows livestock such as cattle and horses. The cattle egret eats up the insects hiding under vegetation close to the grounds, which get stirred up when the cattle walk through them. Which relationship is being shared? A. Mutualism B. Commensalism C. Predation D. Symbiosis
100
B. Predation
A poor salmon run can have a domino effect on the health and population of grizzly bears, and researchers are worried that poor salmon runs will become frequent over the course of time; courtesy, overfishing and climate change. What is the relationship between the grizzly bear and the salmon? A. Parasitism B. Predation C. Commensalism D. Symbiosis
200
D. Mutualism
Your mother buys a Venus McFlyTrap for your house because there are flies. Which relationship is being shown? A. Symbiosis B. Commensalism C. Parasitism D. Mutualism
200
C. Parasitism
Barnacles, which live on the bodies of whales, do not seriously harm their hosts, but they do itch and are annoying. Which relationship is being shared? A. Mutualism B. Commensalism C. Parasitism D. Predation
200
D. Predation
A cat is chasing a mouse. What is the relationship between these two species? A. Symbiosis B. Commensalism C. Parasitism D. Predation
200
C. Commensalism
Orchids are usually found in dense tropical forests. They form their base of attachment on the branches of trees, and benefit by getting adequate sunlight and nutrition that flows down the branches. What relationship is being described? A. Predation B. Parasitism C. Commensalism D. symbiosis
200
C. Predation
For the great white shark, its exceptional hearing skills help to locate the seal. It is not always possible for the seal to stay out of water, lest it can die of hunger. The moment it gets into the water, it is on the great white's radar. It all comes down to whoever blinks first. What is the relationship between the great white shark and the seal? A. Commensalism B. Symbiosis C. Predation D. Mutualism
300
A. Mutualism
A bee flies from flower to flower gathering nectar and when they land on a flower pollen gets on their bodies and when they fly to the next flower, some of the pollen from the first flower rubs off on the next flower which ends up pollinating the flower. Which relationship is happening? A. Mutualism B. Predation C. Commensalism D. Symbiosis
300
D. Parasitism
Aphids are insects that eat the sap from the plants on which they live. Which relationship is being described? A. Symbiosis B. Mutualism C. Predation D. Parasitism
300
A. Symbiosis
In the ocean, certain species, like shrimps and gobies, will clean fish. What relationship is this? A. Symbiosis B. Commensalism C. Predation D. Mutualism
300

D. Commensalism

The remora forms a special relationship with sharks and other sea organisms like whales and turtles. It has special suckers attached to its fins. It attaches itself to the bodies of sharks, and uses the shark for transportation as well as protection from its predators. What is the relationship? A. Predation B. Symbiosis C. Parasitism D. Commensalism

300
A. Predation
With no place to hide in the open grasslands, the gazelle has no option, but to outrun the cheetah, and the gazelle―knowing that the cheetah is at its fastest when it runs in a straight line―does this by running in a zig-zag pattern. What is the relationship? A. Predation B. Commensalism C. Symbiosis D. Parasitism
400
D. Mutualism
Spider crabs live in shallow areas of the ocean floor and greenish-brown algae lives on the crabs backs. What is the relationship? A. Predation B. Commensalism C. Symbiosis D. Mutualism
400
C. Parasitism
Ladybugs live on plants, eating the aphids and benefiting by getting food, while the plant benefits by being rid of the aphids. Which relationship is being shared? A. Predation B. Symbiosis C. Parasitism D. Mutualism
400
D. Symbiosis
In 1879, the German mycologist Heinrich Anton de Bary defined it as "the living together of unlike organisms." Which relationship was this describing? A. Commensalism B. Predation C. Mutualism D. Symbiosis
400
D. Commensalism
Pseudoscorpions are scorpion-like insects that usually grow to less than one centimeter in length. They are different from other types of scorpions in the way that they do not have stingers. Some species of the pseudoscorpions hide themselves under the wing covers of large insects like beetles. This gives them protection from their predators, and also provides them a means of transportation over a larger area. What is the relationship? A. Predation B. Mutualism C. Symbiosis D. Commensalism
400
D. Predation
Galapagos tortoises eat the branches of the cactus plants that grow on the Galapagos islands. On one of the islands, where long-necked tortoises live, the branches are higher off the ground. On another island, where short-necked tortoises live, the branches are lower down. What is the relationship between the Galapagos tortoise and the branches of the cactus? A. Symbiosis B. Parasitism C. Mutualism D. Predation
500
A. Mutualism
A certain kind of bacteria lives in the intestines of humans. The human cannot digest all of the food that it eats. The bacteria eat the food that the human cannot digest and partially digest it allowing the human to finish the job. Which relationship is this describing? A. Mutualism B. Predation C. Symbiosis D. Commensalism
500
D. Parasitism
The beautiful emerald cockroach wasp is a very dangerous insect to some other insects. Which is a relationship that is being shared? A. Commensalism B. Predation C. Mutualism D. Parasitism
500
C. Symbiosis
There are different relationships with species like Mutualism, Parasitism, Predation, Commensalism, and Symbiosis. Which one means close and often long-term interaction between two different biological species? A. Predation B. Parasitism C. Symbiosis D. Commensalism
500
B. Commensalism
The burdocks are a common type of weed that are mostly found along roadsides, and on barren land and fields. The burdock seeds have long, curved spines attached to them. They easily catch onto the fur of passing animals, which carry and drop off these seeds to other regions. What is the relationship of the example? A. Parasitism B. Commensalism C. Predation D. Symbiosis
500
B. Predation
The fastest lions are able to catch food and eat, so they survive and reproduce, and gradually, faster lions make up more and more of the population. The fastest zebras are able to escape the lions, so they survive and reproduce, and gradually, faster zebras make up more and more of the population. An important thing to realize is that as both organisms become faster to adapt to their environments, their relationship remains the same: because they are both getting faster, neither gets faster in relation to the other. What relationship is this describing? A. Parasitism B. Predation C. Commensalism D. Mutualism
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