Question

read each description and identify the type of interaction (predation, competition, parasitism, mutualism, commensalism) between species.

1. mutualism wasps lay eggs on caterpillar so their young have food when they hatch
2. predation wolves chase down a deer
3. clownfish (a.k.a. nemo) have a protected home in sea anemone & frighten other fish away that try to eat the anemone
4. birds follow army ant raids on the forest to eat the insects the ants scare up; ants are unaffected
5. mistletoe plants grow into the tissues of trees for their nutrients
6. trees in the rain forest must grow quickly & high to reach sunlight
7. orchids grow on tops of tree branches to reach the light they need & get nutrients that run down along the trees
8. male birds must build the best nests to attract the limited number of female mates
9. star fish feed on clams
10. plover birds pick extra bits of food from crocodile teeth w/o getting eaten themselves; crocodiles get tooth cleaning

animals in the savanna all drink from the same watering hole
barnacles attach onto the skin of whales so they can find nutrients wherever the whale goes; whales arent harmed
bacteria live in our intestines; they get a home while helping us make vitamins
complete the following sentences by filling in the blanks or answering the questions.
there is ______________ for limited resources because organisms tend to over
predators tend to feed on the ____________ and the ____________

Explanation:

1. Clownfish and sea - anemone help each other, so it's mutualism.
2. Birds benefit from ants' actions and ants are unaffected, so it's commensalism.
3. Mistletoe benefits at the expense of trees, so it's parasitism.
4. Trees compete for sunlight, so it's competition.
5. Orchids benefit from trees without harming or helping them, so it's commensalism.
6. Male birds compete for female mates, so it's competition.
7. Starfish eating clams is predation.
8. Plover birds and crocodiles help each other, so it's mutualism.
9. Animals drinking from the same watering hole is competition.
10. Barnacles on whales is commensalism.
11. Bacteria in intestines helping humans while getting a home is mutualism.

Answer:

1. Mutualism
2. Commensalism
3. Parasitism
4. Competition
5. Commensalism
6. Competition
7. Predation
8. Mutualism
9. Competition
10. Commensalism
11. Mutualism