Biology EOC Prep - Taxonomy and Classification

8A. Scientists around the world use a standardized taxonomic system. Why would scientists want to use a taxonomic system that is standardized?

• In order to avoid confusion with the identification of organisms
• Because Linnaeus established the system
• So that Latin names can be applied for a practical purpose
• In order to place organisms in different groups

8B. This dichotomous key can be used to identify some conifers.
Based on the key, which of these best describes the leaves and cones of the longleaf pine?

• Needle-like straight leaves that are mostly over 25 cm long and found in clusters of three; no thorns on cones
• Flattened and scale-like leaves that are mostly over 25 cm long; soft and leathery cones
• Needle-like straight leaves with a length of 25 cm that are mostly found in clusters of five; thorny cones
• Leaves with a length of 25 cm that are found in clusters of more than five; no thorns on cones

8A.  Adult mountain lions (Puma concolor) are almost 2 meters long.  They have a black spot over each eye.  The common names used throughout the United States for this species are listed below.  Why is it best for scientists to use the name from the standardized taxonomic system?

• The standardized name differentiates mountain lions and pumas.
• The standardized name is less descriptive of the animal that has been observed.
• Communication with other scientists about mountain lions will be reduced.
• All scientists will be using one name for mountain lions.

8B.  Frogs and toads belong to the order Anura.  The smallest organism in this order is about 7 millimeters long, while the largest member is about 30 centimeters long.  Which of these lists best describes this order?

• A
• B
• C
• D

8A.  The Linnaean taxonomic system classifies organisms into divisions called taxa.  If two organisms belong to the same taxonomic group, they are related.  Similarity at which of these levels indicates the closest relationship?

• Kingdom
• Class
• Order
• Genus

8B.  Using a light microscope, a student identified the following characteristics of four organisms found in a sample of pond water.  Based on the observations of the student, which organisms most likely belong to the taxonomic group for bacteria?

• Organisms 1 and 2
• Organisms 3 and 4
• Organisms 1 and 4
• Organisms 2 and 3

8A. Having a standard taxonomic system benefits the scientific community by allowing scientists from all over the world to do which of the following?

• Have a common system for the classification of locations containing fossils
• Use a similar system to classify the impact of removing species from ecosystems
• Have a common understanding in the classification of organisms
• Understand how other scientists classify predator-prey relationships

8B. A student collected the animal shown below on a field trip. The student used a dichotomous key and a microscope to classify the animal. How should this animal be classified?

• Arthropoda
• Annelida
• Mollusca
• Platyhelminthes

8C. The diagram shows taxonomic groups and a major distinguishing characteristic of all but two of them. Which characteristics will be used to complete the chart?

• Motile - Nonmotile
• Nonphotosynthetic - Photosynthetic
• Autotrophic - Heterotrophic
• No nucleus - Nucleus

8B. Arthropods are joint-legged animals. Spiders, crabs, pill bugs, centipeds, and millipeds are examples of the many types of arthropods. Which of these arthropods are most closely related?

• Arthropods of the same family
• Arthropods of the same class
• Arthropods of the same genus
• Arthropods of the same species