Earth Science c/o clown fish , cactus and Monarch butterflies

Question

1. every year Monarch butterflies fly north to the central United States from Mexico where they have spent the winter.  the movement of the butterflies between Mexico and the United States is called

 

a.  migration

b.  hibernation

c.  estivation

d.  none of these

 

2.  clown fish and the sea anemone live together.  the anemone is kept clean by the clown fish, which in turn receives bits of leftover food from the anemone.  this is an example of

 

a.  mutualism

b.  parasitism

c.  commensalism

d.  predation

 

3.  the cactus ren builds its next in the cholla cactus.  there the wren's young are protected from predators while the cactus itself is not harmed.  this is an example of

 

a.  mutualism

b.  parasitism

c.  commensalism

d.  predation

Answer 1

1. a, migration, butterflies migrated to escape cold temperatures.

 

2. b, mutualism, both organisms obtain benefit with their co-existence.

 

3. c, commensalism,  wren prepares to protect its progeny without harming cactus, two organisms interact without harm to either one.

 

Hope this helps.