Question

1. in mutualism, which statement is true?

a. a. one organism benefits, the other is harmed
b. b. both organisms are harmed
c. c. both organisms benefit
d. d. neither organism benefits

1. which relationship describes a tapeworm in a human

intestine?
a. a. mutualism
b. b. commensalism
c. c. parasitism
d. d. competition

1. remora fish ride on sharks and eat leftovers from the sharks

meals. the shark is unaffected. this is an example of:
a. a. parasitism
b. b. commensalism
c. c. mutualism
d. d. competition

1. which of the following is not an example of parasitism?

a. a. mistletoe on a tree
b. b. lichen on a rock
c. c. tick on a deer
d. d. tapeworm in a cat
open-ended questions: answer the following questions in
complete sentences.

1. describe a real-life example of mutualism and explain why it is

considered mutualistic.

Explanation:

Mutualism is a symbiotic relationship where both organisms benefit. Commensalism is when one organism benefits and the other is unaffected. Parasitism is when one organism benefits at the expense of the other.

For question 2: By definition of mutualism, both organisms benefit.
For question 3: A tapeworm in a human intestine benefits (gets nutrients) while the human is harmed, which is parasitism.
For question 4: Remora fish benefit (get food) and the shark is unaffected, which is commensalism.
For question 5: Lichen is a mutualistic relationship between a fungus and an alga (or cyanobacterium), not parasitism. Mistletoe on a tree (parasitism as it takes nutrients from the tree), tick on a deer (parasitism as it feeds on deer's blood), tapeworm in a cat (parasitism as it takes nutrients from the cat).

Answer:

1. C. Both organisms benefit
2. C. Parasitism
3. B. Commensalism
4. B. Lichen on a rock