Amaya collected insects in the forest. She was unable to identify one unusual looking insect using a dichotomous key. Amaya concluded that the insect must be a new species. Which facts would support the conclusion that the insect is a new species?
A botanist observes a large population of a particular type of beetle eating the leaves of one tree but not the leaves of a nearby tree. What should the botanist do first to study the interaction of these organisms in the ecosystem?
Which best describes a dichotomous key?
A scientist wants to study the interactions of different birds in the southern part of a desert. What should the scientist do first?
Rory is trying to identify a tree from one of its leaves. A question on the dichotomous key that he is using asks whether the leaf has 3-5 lobes or more than 5 lobes. Rory cannot tell whether the leaf in his hand has 5 or 6 lobes. What should Rory do to continue identifying the tree?
Observations of organisms include
How is a dichotomous key used?
A series of choices between two characteristics that is used to identify organisms is called a
Dichotomous keys ask
Which number on the dichotomous key represents the point of differentiation between organism cap x from organism cap z ?
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