Are my examples of obligate and facultative mutualism right?

a good one as well?

the top of my other response didnt show. it said: is a relationship between fruit plants and birds also a good example.

Your example of obligate mutualism is sound, but some biologists argue that in the clown fish/sea anemone relationship, the fish are obligate mutualists of the anemone (must have a host anemone in the wild), but that anemones are facultative mutualists of clown fish.

You might want to find another example of facultative mutualism.

ok. thankyou.

what the objective mutualism ?

Is the mutualism between Botrytis cinerea and Lobesia botrana facultative?