1) Spider Crab and Algae - Spider crabs live in shallow areas of the ocean floor. Greenishbrown algae lives on the crab’s back, helping the crabs blend in with their environment, which makes them less noticeable to predators. The algae are provided with a good place to live while the crab receives camouflage.  a) Parasitism b) Commensalism c) Mutualism d) Predation 2) Wrasse Fish and Black Sea Bass - Wrasse fish feed on the parasites found on the black sea bass’s body. a) Parasitism b) Commensalism c) Mutualism d) Predation 3) Rabbit and Lettuce - A rabbit happens upon a garden and eats the lettuce growing in it. a) Parasitism b) Commensalism c) Mutualism d) Predation 4) Whales and Barnacles - Barnacles create home sites by attaching themselves to whales. a) Parasitism b) Commensalism c) Mutualism d) Predation 5) Deer and Tick - Ticks feed on deer blood, causing irritation to the deer and potentially giving it various diseases such as Lyme disease. a) Parasitism b) Commensalism c) Mutualism d) Predation 6) Hermit Crabs and Snails - Hermit crabs live in shells made and then abandoned by snails. a) Parasitism b) Commensalism c) Mutualism d) Predation 7) Boxer Crab and Anemone - The boxer crab carries a pair of small anemones in its claws. When a predator approaches, it waves the anemones around which presents its stinging tentacles and deters the predator. The anemones get small particles of food from the crab when it eats. a) Parasitism b) Commensalism c) Mutualism d) Predation 8) Cuckoo and Warbler - A cuckoo may lay its eggs in a warbler’s nest. The cuckoo’s young will displace the warbler’s young, and the warbler will raise the cuckoo’s young. a) Parasitism b) Commensalism c) Mutualism d) Predation 9) Human Gut Bacteria and Humans - Certain bacteria live within the digestive system of humans and feed on various things within the human. This is not detrimental to the human. a) Parasitism b) Commensalism c) Mutualism d) Predation 10) Mistletoe and Oak Tree - Mistletoe extracts water and nutrients from the oak tree, causing harm to the oak tree. a) Parasitism b) Commensalism c) Mutualism d) Predation 11) Lice and Humans - Lice attach to human hair and enjoy the warmth given off by the human. They eat tiny amounts of human blood, causing the human to have little red bumps that are quite itchy. They may also transmit disease to the human. a) Parasitism b) Commensalism c) Mutualism d) Predation 12) Ostrich and Gazelle - Ostriches and gazelles gather food in areas close to each other. They have different visual abilities so they are able to help warn each other when predators are nearby. They help each other avoid danger.  a) Parasitism b) Commensalism c) Mutualism d) Predation 13) Remora Fish and Shark - Remoras attach themselves to a shark’s body. They then travel with the shark and feed on the leftover food scraps from the shark’s meals. a) Parasitism b) Commensalism c) Mutualism d) Predation 14) Fleas and Cat - Fleas live on the cat’s body and eat its blood. They cause irritation to the cat and may transmit disease to the cat. a) Parasitism b) Commensalism c) Mutualism d) Predation 15) Grasshopper and Leaf - A grasshopper lands on a plant and eats its leaves for food. a) Parasitism b) Commensalism c) Mutualism d) Predation 16) Frog and Insect - The frog uses its long, sticky tongue to catch insects for food. a) Parasitism b) Commensalism c) Mutualism d) Predation 17) Maribou Stork and Bees - The stork uses its saw-like bill to cut up the dead animals it eats. As a result, the dead animal carcass is accessible to bees for food and egg-laying. a) Parasitism b) Commensalism c) Mutualism d) Predation 18) Otters and Kelp - Otters float and sleep on forests of kelp in the water. The kelp provides them a place to anchor in the moving water. The otters eat sea urchins, which normally feed on the kelp. a) Parasitism b) Commensalism c) Mutualism d) Predation 19) Lion and Zebra -The lion hunts and kills the zebra for its food. a) Parasitism b) Commensalism c) Mutualism d) Predation 20) Bear and Berries - The bear forages through the forest and finds berries for food. a) Parasitism b) Commensalism c) Mutualism d) Predation

Symbiotic Relationships

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