Cladistics Worksheet
This worksheet covers fundamental concepts of cladistics, including cladogram interpretation, synapomorphies, and phylogenetic relationships for Grade 11 Biology students.
Includes
Standards
Topics
Cladistics: Understanding Evolutionary Relationships
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Read each question carefully and answer to the best of your ability. Refer to the provided cladogram for relevant questions.
1. What is the primary purpose of a cladogram?
To show the physical appearance of organisms.
To illustrate the geographical distribution of species.
To hypothesize evolutionary relationships among organisms.
To classify organisms based on their habitat.
2. A shared derived character is known as a:
Symplesiomorphy
Homoplasy
Apomorphy
Synapomorphy
Use the cladogram below to answer the following questions.
3. Which two organisms are most closely related on the cladogram?
4. What is the shared derived character between organisms B and C?
5. A group of organisms consisting of a common ancestor and all its descendants is called a .
6. The point on a cladogram where two lineages diverge from a common ancestor is known as a .
7. All homologous structures are also analogous structures.
True
False
8. The principle of parsimony suggests the simplest explanation is usually the best.
True
False
9. Differentiate between an ancestral character and a derived character.
10. Explain the concept of an outgroup in cladistics and its importance.
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