Biology Unit 1: Tree of Life: Classification & Overview

What does the “tree of life” represent in biology?

• The structure of plant families

• A timeline of human history

• The evolutionary relationships among all living things

• The classification of animals only

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-3

The scientific study of classifying organisms is called (a)   .

Which system gives each species a two-part Latin name?

• Genetic coding

• Binomial nomenclature

• DNA barcoding

• Morphological sorting

True or False: In a cladogram, organisms that share a more recent common ancestor are more closely related.

• True

• False

Tags

NGSS.MS-LS4-2

What is a node on a phylogenetic tree?

• The root of the tree

• A branch that goes extinct

• A common ancestor of two or more groups

• A random mutation

Tags

NGSS.MS-LS4-2

A diagram that shows evolutionary relationships is called a _______.

• cladogram

• phylogenetic tree

Tags

NGSS.MS-LS4-2

How many domains of life are there?

• 2

• 3

• 5

• 6

Which of the following is not one of the three domains of life?

• Bacteria

• Archaea

• Protista

• Eukarya

The domain (a)   includes organisms with a nucleus in their cells.

True or False: Archaea are more closely related to Eukarya than to Bacteria.

• True

• False