Question

what is the purpose of a dichotomous key of the sort you might find in a field guide? check all that apply.
□ to determine what sort of field you are located in
□ to identify species in the wild
□ to measure the magnetic or electric field of an organism
□ to compare species to each other
done ✔

Explanation:

• A dichotomous key in a field guide is used for identifying organisms (species) in natural settings. It presents a series of paired statements (dichotomies) to narrow down the identity of a specimen.
• "To determine what sort of field you are located in" is incorrect as dichotomous keys don't relate to identifying the type of field (like a grassland vs. a forest in terms of location type, but rather the organisms in it).
• "To measure the magnetic or electric field of an organism" is incorrect as dichotomous keys are for identification, not measuring physical fields of organisms.
• "To compare species to each other" can be a by - product of using a dichotomous key (as you analyze differences to identify), and it is also used to identify species in the wild. So both "to identify species in the wild" and "to compare species to each other" are correct.

Answer:

• to identify species in the wild
• to compare species to each other