Lab: Using a Dichotomous Key

Question 1

Why is taxonomy important?

Revolt · Accepted Answer

Taxonomy allows a better understanding of relationships among species.

Question 2

Which type of evidence is least likely to result in changes to a phylogenetic tree?

Revolt · Accepted Answer

physical characteristics

Question 3

Which identifies the main purpose of biological taxonomy?

Revolt · Accepted Answer

use a systematic method to name, organize, and show relationships among species

Question 4

Which is the best definition of a phylogenetic tree?

Revolt · Accepted Answer

a branching chart that depicts evolutionary relationships among organisms

Question 5

Which scientific area has the most influence in shaping modern classification methods?

Revolt · Accepted Answer

evolution

Question 6

Why do classification systems change over time?

Revolt · Accepted Answer

Scientists find new evidence in their studies.

Question 7

Consider the classification levels of a honey bee. EukaryaAnimaliaArthropodaInsectaHymenopteraApidaeApismelliferaTo which class do honey bees belong?

Revolt · Accepted Answer

Insecta

Question 8

Consider the phylogenetic tree.Which two organisms are most closely related, based on the tree above?

Revolt · Accepted Answer

dinosaurs and birds

Question 9

Which taxonomic group includes kingdoms and all other levels of taxonomy?

Revolt · Accepted Answer

domain

Question 10

What is binomial nomenclature?

Revolt · Accepted Answer

a two word system for naming organisms by using the genus and species

Lab: Using a Dichotomous Key Answers