Podcast
Questions and Answers
Which of the following is a phylum of invertebrates?
Which of the following is a phylum of invertebrates?
- Mammals
- Chordata
- Amphibians
- Arthropods (correct)
What percentage of animal species are estimated to be invertebrates?
What percentage of animal species are estimated to be invertebrates?
- 97% (correct)
- 50%
- 75%
- 100%
What does the Latin word 'vertabra' mean?
What does the Latin word 'vertabra' mean?
- Vertebrate
- Spinal column
- Invertebrate
- Joint in general (correct)
Which term is derived from the concept of turning, expressed in the root 'verto'?
Which term is derived from the concept of turning, expressed in the root 'verto'?
What does the prefix 'in-' mean?
What does the prefix 'in-' mean?
Which of the following is a sister chordate subphylum to Vertebrata?
Which of the following is a sister chordate subphylum to Vertebrata?
What is the primary trait that distinguishes invertebrates from vertebrates?
What is the primary trait that distinguishes invertebrates from vertebrates?
Which term describes a taxon in the same way that Arthropoda and Vertebrata do?
Which term describes a taxon in the same way that Arthropoda and Vertebrata do?
Which of the following is NOT a characteristic of invertebrates?
Which of the following is NOT a characteristic of invertebrates?
Which major invertebrate group includes insects, crustaceans, and arachnids?
Which major invertebrate group includes insects, crustaceans, and arachnids?
What is the estimated percentage of invertebrate species among all described animal species?
What is the estimated percentage of invertebrate species among all described animal species?
Which of the following is a valid taxon within Animalia?
Which of the following is a valid taxon within Animalia?
What term is used as a convenience for animals that are not members of Vertebrata?
What term is used as a convenience for animals that are not members of Vertebrata?
Which major invertebrate group has the largest number of described extant species?
Which major invertebrate group has the largest number of described extant species?
'Invertebrata' has very little circumscriptional significance except within which taxon?
'Invertebrata' has very little circumscriptional significance except within which taxon?
Which of the following attributes logically should precede the presence or absence of the vertebral column in constructing a cladogram?
Which of the following attributes logically should precede the presence or absence of the vertebral column in constructing a cladogram?
Flashcards
Invertebrate Phylum
Invertebrate Phylum
A group of animals that lack a backbone or vertebral column.
Vertebrate
Vertebrate
Animal with a backbone (vertebral column).
Invertebrates Percentage
Invertebrates Percentage
Estimated to make up 97% of animal species.
Invertebrate Feature
Invertebrate Feature
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Arthropoda
Arthropoda
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'In-' Prefix
'In-' Prefix
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Tunicata
Tunicata
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Invertebrata
Invertebrata
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Chordata Subphylum
Chordata Subphylum
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Vertebrata Significance
Vertebrata Significance
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Manidae
Manidae
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Invertebrate Example
Invertebrate Example
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Determining Cladogram Features
Determining Cladogram Features
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Arthropoda Characteristics
Arthropoda Characteristics
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Invertebrate Species Percentage
Invertebrate Species Percentage
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Study Notes
Invertebrates
- Approximately 95% of animal species are estimated to be invertebrates.
- The Latin word 'vertabra' means "joint" or "turned".
- The term 'invertebrate' is derived from the prefix 'in-' meaning "not" or "without", and the concept of turning, expressed in the root 'verto', referring to the vertebral column.
Characteristics of Invertebrates
- The primary trait that distinguishes invertebrates from vertebrates is the absence of a vertebral column.
- Invertebrates do not have a vertebral column, which is a characteristic of vertebrates.
Taxonomy of Invertebrates
- The term 'invertebrate' is used as a convenience for animals that are not members of Vertebrata.
- 'Invertebrata' has very little circumscriptional significance except within the taxon Animalia.
- A valid taxon within Animalia is Vertebrata, which includes animals with a vertebral column.
- Arthropoda is a sister chordate subphylum to Vertebrata.
- A taxon in the same way that Arthropoda and Vertebrata do is a phylum.
Types of Invertebrates
- A major invertebrate group that includes insects, crustaceans, and arachnids is Arthropoda.
- Arthropoda has the largest number of described extant species among all invertebrate groups.
Cladogram Construction
- The presence or absence of the vertebral column should logically follow the presence or absence of a notochord in constructing a cladogram.
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Description
Test your knowledge about animals that do not have a vertebral column, including well-known phyla such as arthropods, mollusks, annelids, echinoderms, flatworms, cnidarians, and sponges. Discover fascinating facts about the majority of animal species.
