Exam 13: Species Interactions,population Dynamics,and Natural Selection

When individuals of two species interact,the nature of the interaction can be classified qualitatively as positive,negative,or ________.

An organism's realized niche is always smaller than its fundamental niche.

When the trunk or limb of a tree provides the substrate on which an epiphytic orchid grows,the arrangement benefits the orchid,which gets nutrients from the air and moisture from aerial roots,while the tree is unaffected.The relationship is referred to as

Adaptive radiation can result from divergent adaptations to avoid predators.

When each of two species benefits from their interaction,the relationship is referred to as ________.

Species having wide geographic distributions generally encounter a broader range of physical environmental conditions than species whose distribution is more restricted.

When one species feeds on another prey species,typically killing it,the relationship between the two interacting species is referred to as ________.