Question

which symbiosis is it?
m - mutualism - a symbiotic relationship that benefits both organisms involved.
c - commensalism - a symbiotic relationship that benefits one organism and the other is not helped or harmed.
p - parasitism - a symbiotic relationship that benefits one organism and the other is harmed.

1. a tick living on a dog.
2. a tapeworm living in a 6th grade student’s intestines.
3. a bird building their nest in a tree.
4. the hermit crab carrying the sea anemone on its back.
5. a whale and barnacles.
6. head lice living on a human scalp.
7. the ants protecting the acacia tree and tree provides food for the ants.
8. orchids growing in tall tropical trees, the trees are not harmed but the orchids get sunlight.
9. a sixth grader and their pet.
10. algae growing on the fur of a sloth, giving it camouflage.
11. small mites live on your skin, eating dead skin cells. you don’t even notice.
12. the clownfish and the sea anemone.
13. oxpecker and zebras: oxpeckers are a type of small bird that land on zebras and eat ticks and other parasites that live on the zebra’s skin. the oxpeckers get food and the zebras get pests removed.

organism 1: helped harmed not harmed/not helped
organism 2: helped harmed not harmed/not helped
symbiotic relationship:

1. tapeworm and animals: tapeworms are segmented flatworms that attach themselves to the insides of the intestines of animals such as cows, pigs, and humans. tapeworms get food by eating the host’s (animal) partly digested food, depriving the host (animal) of nutrients.

organism 1: helped harmed not harmed/not helped
organism 2: helped harmed not harmed/not helped
symbiotic relationship:

1. spider crab and algae: spider crabs live in shallow areas of the ocean floor, and greenish - brown algae lives on the crabs backs, making the crabs blend in with their environment, and unnoticeable to predators. the algae get a good place to live, and the crab gets camouflage.

organism 1: helped harmed not harmed/not helped
organism 2: helped harmed not harmed/not helped
symbiotic relationship:

1. remora and the shark: remora fish are small fish that make their niche by picking up the scraps that sharks leave behind while feeding. the shark makes no attempt to prey on the remora fish.

organism 1: helped harmed not harmed/not helped
organism 2: helped harmed not harmed/not helped
symbiotic relationship:

Explanation:

1. A tick on a dog is parasitism as the tick benefits and the dog is harmed.
2. A tapeworm in a student's intestines is parasitism since the tape - worm benefits and the student is harmed.
3. A bird building a nest in a tree is commensalism as the bird benefits and the tree is not affected.
4. Hermit crab and sea anemone is mutualism as both benefit (anemone gets mobility and food scraps, crab gets protection).
5. A whale and barnacles is commensalism as barnacles benefit from the whale's movement for feeding and the whale is not affected.
6. Head lice on a human scalp is parasitism as lice benefit and humans are harmed.
7. Ants and acacia tree is mutualism as ants get food and the tree gets protection.
8. Orchids on tropical trees is commensalism as orchids get sunlight and the trees are not harmed.
9. A student and their pet is mutualism as both benefit from companionship etc.
10. Algae on a sloth is mutualism as algae get a place to live and sloth gets camouflage.
11. Mites on skin is commensalism as mites benefit from dead skin and humans are not affected.
12. Clownfish and sea anemone is mutualism as clownfish get protection and sea anemone gets food scraps.

For the additional examples:

1. Oxpeckers and zebras: Both are helped, so it's mutualism.
2. Tapeworms and animals: Tapeworms are helped and animals are harmed, so it's parasitism.
3. Spider - crab and algae: Both are helped, so it's mutualism.
4. Remora and shark: Remora is helped and shark is not harmed/helped, so it's commensalism.

Answer:

1. P
2. P
3. C
4. M
5. C
6. P
7. M
8. C
9. M
10. M
11. C
12. M

Additional 1: M
Additional 2: P
Additional 3: M
Additional 4: C