Question

shown below is a phylogenetic tree of the three domains of life. organisms in the same domain are more closely related to each other than they are to organisms in other domains.
phylogenetic tree of life

1. using the diagram, the genetic material of what type of organism would be most similar to spirochetes?

a. halophiles
b. methanococcus
c. flagellates
d. thermotoga

1. what do we call the branch of science that deals with classifying, identifying, and naming organisms?

1. which three of the following supports the need for an international standardized taxonomic system?

a. having a common language makes it easier for scientists in different countries to research things.
b. scientists using latin to name organisms makes it easier to share knowledge worldwide.
c. there is no need to use dna / genetic information to help classify organisms.
d. organisms are grouped together based on structural similarities and differences to further research.

Explanation:

For Question 8:

On the phylogenetic tree, organisms in the same domain share more similar genetic material, and those with closer branching within the domain are most similar. Spirochetes are in the Bacteria domain; Thermotoga is also in Bacteria and shares a close branching point with Spirochetes, while the other options belong to Archaea or Eukaryota.

For Question 9:

The branch of science focused on classifying, identifying, and naming organisms is a defined biological field.

For Question 10:

An international standardized taxonomic system needs to support global scientific collaboration. Options a, b, and d explain benefits of a shared system, while option c is incorrect as genetic data is used in classification.

Answer:

1. d. Thermotoga
2. Taxonomy
3. a. Having a common language makes it easier for scientists in different countries to research things.

b. Scientists using Latin to name organisms makes it easier to share knowledge worldwide.
d. Organisms are grouped together based on structural similarities and differences to further research.