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Questions and Answers
Which of the following classification groups is just smaller than Phylum?
Which of the following classification groups is just smaller than Phylum?
- Order
- Class (correct)
- Family
- Genus
Why do biologists classify living organisms?
Why do biologists classify living organisms?
to make sense of the incredible diversity of life
Which of the following IS a purpose of classification?
Which of the following IS a purpose of classification?
- None of these are correct
- Retaining organisms in a space
- Organization (correct)
- Simplification
What characteristic is most likely the most important to classify all the organisms into one large group?
What characteristic is most likely the most important to classify all the organisms into one large group?
Which two of these organisms are most closely related?
Which two of these organisms are most closely related?
Which of the following is a reason that Linnaeus changed?
Which of the following is a reason that Linnaeus changed?
Which of the following words is best defined as a method by which biologists organize living things into groups?
Which of the following words is best defined as a method by which biologists organize living things into groups?
Which of the following words is best defined by a grouping or arranging organisms into a system?
Which of the following words is best defined by a grouping or arranging organisms into a system?
In the scientific name of a dog, Canis familiaris, the name familiaris designates the dog's
In the scientific name of a dog, Canis familiaris, the name familiaris designates the dog's
Which would be the best example of organisms that have been grouped together by a similarity in structure?
Which would be the best example of organisms that have been grouped together by a similarity in structure?
Members of the same phylum would also belong to the same
Members of the same phylum would also belong to the same
A dichotomous key is a step-by-step way to identify an organism using a series of paired descriptions.
A dichotomous key is a step-by-step way to identify an organism using a series of paired descriptions.
The method of naming species is known as scientific nomenclature.
The method of naming species is known as scientific nomenclature.
A group of related organisms that includes an ancestor and all of its descendants is called a(n) _____
A group of related organisms that includes an ancestor and all of its descendants is called a(n) _____
What does the term 'Homo sapiens' mean?
What does the term 'Homo sapiens' mean?
The first step in taxonomy is:
The first step in taxonomy is:
Phylogenetic classification is based on same evolutionary descent.
Phylogenetic classification is based on same evolutionary descent.
The formal system of naming species, first developed by Linnaeus, is called _____ nomenclature.
The formal system of naming species, first developed by Linnaeus, is called _____ nomenclature.
An artificial system of plant classification was given by _____
An artificial system of plant classification was given by _____
The evolutionary history of a group of related organisms is called _____
The evolutionary history of a group of related organisms is called _____
Name the kingdom which includes blue-green algae, nitrogen-fixing bacteria, and methanogenic archaebacteria?
Name the kingdom which includes blue-green algae, nitrogen-fixing bacteria, and methanogenic archaebacteria?
All modern classification systems have their roots in the Linnaean classification system.
All modern classification systems have their roots in the Linnaean classification system.
There are _____ main ranks as defined by the international nomenclature codes.
There are _____ main ranks as defined by the international nomenclature codes.
The flatworms, tapeworms, and flukes come under _____
The flatworms, tapeworms, and flukes come under _____
The plants are divided into two major divisions, vascular and non-vascular.
The plants are divided into two major divisions, vascular and non-vascular.
The chordates include invertebrates.
The chordates include invertebrates.
In the binomial system, the scientific name is written as:
In the binomial system, the scientific name is written as:
A plant living symbiotically inside another plant is a saprophyte.
A plant living symbiotically inside another plant is a saprophyte.
All bryophyte species reproduce using _____
All bryophyte species reproduce using _____
Which of the following is the basic (smallest) unit of plant classification?
Which of the following is the basic (smallest) unit of plant classification?
Leguminous plants possess which of the following types of roots?
Leguminous plants possess which of the following types of roots?
_____ is the study of classification of organisms.
_____ is the study of classification of organisms.
The plant kingdom is divided on the basis of which of the following?
The plant kingdom is divided on the basis of which of the following?
All animal phyla consist only of invertebrates except chordates.
All animal phyla consist only of invertebrates except chordates.
What is the system of classification from biggest to smallest?
What is the system of classification from biggest to smallest?
Which of the following words is best defined as a two-word naming system?
Which of the following words is best defined as a two-word naming system?
Complete the analogy by selecting the correct letter. In analogies, A : B :: C : ? means A is to B as C is to ?
Complete the analogy by selecting the correct letter. In analogies, A : B :: C : ? means A is to B as C is to ?
Birds and reptiles are believed to have descended from a common ancestor, so they are _____
Birds and reptiles are believed to have descended from a common ancestor, so they are _____
The science of classifying organisms is called taxonomy.
The science of classifying organisms is called taxonomy.
A cladogram is also known as the true evolutionary tree.
A cladogram is also known as the true evolutionary tree.
The earthworms and leeches come under phylum:
The earthworms and leeches come under phylum:
A carrot is a _____
A carrot is a _____
_____ is found in nematoda.
_____ is found in nematoda.
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Study Notes
Classification Basics
- Classification group just below Phylum is Class.
- Classification helps make sense of the incredible diversity of life.
- Organization of organisms is a fundamental purpose of classification.
Key Characteristics for Classification
- Organisms with four legs are crucial for grouping in various settings.
- Closely related organisms include Canis familiaris (domestic dog) and Canis lupus (wolf).
Taxonomy
- Taxonomy is the method by which biologists organize living things into groups.
- Classification involves grouping organisms into a systematic framework.
Scientific Nomenclature
- In "Canis familiaris," "familiaris" indicates the species.
- Binomial nomenclature consists of genus followed by species.
Plant and Animal Classification
- The Phylum of organisms also belongs to the same Kingdom.
- The plant kingdom is divided based on reproduction and vascular tissues.
- Leguminous plants feature nodulated roots.
Evolution and Relationships
- Phylogenetic classification is based on evolutionary ancestry.
- Monophyletic groups include birds and reptiles, derived from a common ancestor.
Miscellaneous Concepts
- A dichotomous key is used for species identification through paired descriptions.
- Cladograms represent evolutionary relationships but are not actual evolutionary trees.
General Facts
- The science of classifying organisms is called taxonomy.
- There are seven main ranks in modern classification.
- The flatworms and tapeworms belong to Platyhelminthes.
- All bryophytes reproduce using spores.
- The smallest unit of plant classification is species.
Important Terminology
- A clade refers to a group of related organisms including an ancestor and all descendants.
- The term "Homo sapiens" translates to "wise man."
- The formal system of species naming developed by Linnaeus is known as binomial nomenclature.
Animal Classification
- Earthworms and leeches are classified under the phylum Annelida.
- Invertebrates are present in all phyla except for chordates.
Study Reminders
- Understand the hierarchical structure of classification: kingdom, phylum, class, order, family, genus, species.
- Recognize the importance of structural similarities in grouping organisms.
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