Phylogenetic Grouping Concepts

Phylogenetic Grouping Concepts

Assessment

Interactive Video

Biology, Science, Other

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

This video tutorial explains the different types of relationships on a phylogenetic tree, including monophyly, paraphyly, and polyphyly. Monophyly involves groups sharing a common ancestor and all its descendants. Paraphyly includes a common ancestor but not all descendants. Polyphyly groups unrelated species based on shared features rather than evolutionary origin. Examples for each type are provided using a theoretical phylogenetic tree.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary purpose of a phylogenetic tree?

To categorize species by their habitat

To list all known species

To show the evolutionary relationships between taxa

To display the physical features of species

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes a monophyletic group?

A group with a common ancestor and some of its descendants

A group with a common ancestor and all its descendants

A group with no common ancestor

A group based on shared physical features

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a phylogenetic tree, which taxa form a monophyletic group?

A and B

C and D

G and H

E and F

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What defines a paraphyletic group?

A group with a common ancestor and some of its descendants

A group with a common ancestor and all its descendants

A group with no common ancestor

A group based on shared physical features

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is an example of a paraphyletic group?

A, B, C, and D

D, E, F, G, and H

A, B, and C

E, F, G, and H

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What characterizes a polyphyletic group?

A group with a common ancestor and all its descendants

A group with a common ancestor and some of its descendants

A group of unrelated species with no common ancestor

A group based on genetic similarities

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why might species be grouped into a polyphyletic group?

Due to shared evolutionary origins

Because they share similar physical features

Because they inhabit the same environment

Due to genetic similarities

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