How would a dichotomous key be used?

by observing specimens and then answering questions about them

by inserting it into a chamber at a 45 degree angle

by comparing the colors on a strip to the colors obtained during testing

by analyzing a gel agar and recording the distance each fragment had traveled

Which can be inferred by viewing a phylogenetic tree?

probability of extinction in a population

What goal does Taxonomy accomplish?

classifies living organisms into groups

explains the differences between living organisms

predicts the types of undiscovered organisms

establishes relationships of organisms with their habitat

What are the 8 levels of classification of living things from most general to most specific?

domain, kingdom, phylum, class, order, family, genus, species

eukaryote, kingdom, phylum, class, order, family, genius, species

domain, kingdom, phamily, class, order, family, genus, species

domain, king, phillip, class, order, family, genus, species

Which of the following is true about interpreting cladograms?

organisms to the right of the derived characteristic on a cladogram all have that characteristic

organisms to the left of the derived characteristic on a cladogram all have that characteristic

Cladograms only show relationships of species in the same class

Which can be inferred by viewing a phylogenetic tree?

probability of extinction in a population

When using a dichotomous key to identify organisms, what do we look at?

characteristics that are reliable and convenient to observe

Which of these statements about phylogenetic trees is a true statement?

The taxa in these trees is implied to have come from a common ancestor

It is a branched tree of inferred genetic relationships among a single biological species

These trees show no order of appearance of the organism in history in terms of chronological order.

These trees always represent the species’ evolutionary history in exact descriptions and specifications.

For a project, a student is presented with 12 different wild flowers and has to create a dichotomous key of the different flower species. Which would be the first step to create the key?

examining the flowers and making a list of characteristics that could be used to place the flowers into groups

using the Internet to explore the names of the flowers

finding information on fossil flowers that resemble those in the bouquet

going outside and finding more wild flowers that look similar to those in the bouqet

How do dichotomous keys and phylogenetic trees differ in regards to the information they provide?

Phylogenetic trees concentrate on evolutionary relationships, while dichotomous keys are used to classify organisms by similar and dissimilar traits

Dichotomous keys concentrate on evolutionary relationships, while phylogenetic trees are used to classify organisms by similar and dissimilar traits.

Dichotomous keys provide information about ancestors of species, and phylogenetic trees help identify specific species by using observable traits.

Phylogenetic trees, also called pedigrees, provide a family history, while dichotomous keys help identify members within a family.

Unit 9 Classification

Authored by Charles Martinez

Biology

9th - 12th Grade

NGSS covered

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28 questions

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MULTIPLE CHOICE QUESTION

1 min • 1 pt

Use the phylogenetic tree. Which hypothetical organism is the most recent ancestor for Organisms A and G?

What can a classification system show about an organism?

absolute age of an organism

what an organism is made of

its relationship to other organisms

which organisms are the strongest

Panthera leo, the scientific name for a lion, is a member of which species?

leo

Animalia

Panthera

mammalia

An organism identified with binomial nomenclature includes which two taxa?

class and order

family and genus

genus and species

kingdom and phylum

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Canis lupus, the scientific name for a wolf, is in which genus?

Canis

lupus

Animalia

mammalia

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What role did Linnaeus play in classification of organisms?

He classified all life into plants and animals.

He classified all life by where organisms lived.

He started naming organisms using binomial nomenclature.

He utilized DNA technology to form the modern system of naming.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The table shows some characteristics of four kingdoms.
Which characteristics would a taxonomist use to classify organisms as Archaebacteria or as Eubacteria?

the internal organization of the cell

the number of cells in an individual

the chemical composition of the cell wall

the nutritional requirements of the organism

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Unit 9 Classification

Use the phylogenetic tree. Which hypothetical organism is the most recent ancestor for Organisms A and G?

What can a classification system show about an organism?

Panthera leo, the scientific name for a lion, is a member of which species?

An organism identified with binomial nomenclature includes which two taxa?

Canis lupus, the scientific name for a wolf, is in which genus?

What role did Linnaeus play in classification of organisms?

The table shows some characteristics of four kingdoms.Which characteristics would a taxonomist use to classify organisms as Archaebacteria or as Eubacteria?

Which is used most to determine a true common ancestor for a group of organisms?

How would a dichotomous key be used?

Which can be inferred by viewing a phylogenetic tree?

Access all questions and much more by creating a free account

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The table shows some characteristics of four kingdoms.
Which characteristics would a taxonomist use to classify organisms as Archaebacteria or as Eubacteria?