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Questions and Answers
What is the characteristic of arthropods that is mirrored in their body structure?
What is the characteristic of arthropods that is mirrored in their body structure?
- Ventral nerve cord
- Radial symmetry
- Segmented bodies
- Bilateral symmetry (correct)
Which class of arthropods has a pair of legs per segment, and the first pair of legs is modified into stinging fangs?
Which class of arthropods has a pair of legs per segment, and the first pair of legs is modified into stinging fangs?
- Diplopoda
- Crustacea
- Chilopoda (correct)
- Arachnida
What is the main function of the exoskeleton in arthropods?
What is the main function of the exoskeleton in arthropods?
- To provide bilateral symmetry
- To support the body and provide structure (correct)
- To protect the body from predators
- To aid in movement and locomotion
How many pairs of appendages are attached to the cephalothorax in Arachnida?
How many pairs of appendages are attached to the cephalothorax in Arachnida?
What is the characteristic of Diplopoda that distinguishes them from other classes of arthropods?
What is the characteristic of Diplopoda that distinguishes them from other classes of arthropods?
Which class of arthropods does not have antennas?
Which class of arthropods does not have antennas?
What is the characteristic of Crustacea that is not shared by other classes of arthropods?
What is the characteristic of Crustacea that is not shared by other classes of arthropods?
How many classes of arthropods are mentioned in the text?
How many classes of arthropods are mentioned in the text?
What is the primary reason why insects are not as successful in aquatic environments?
What is the primary reason why insects are not as successful in aquatic environments?
What is the main characteristic of an organism's body that is classified as an arthropod?
What is the main characteristic of an organism's body that is classified as an arthropod?
What is the primary function of an insect's exoskeleton?
What is the primary function of an insect's exoskeleton?
What is the main advantage of an insect's small body size?
What is the main advantage of an insect's small body size?
What is the primary reason why insects are able to adapt to different environments?
What is the primary reason why insects are able to adapt to different environments?
What is the primary purpose of insect taxonomy?
What is the primary purpose of insect taxonomy?
What is the main characteristic of an insect's body that allows them to breathe?
What is the main characteristic of an insect's body that allows them to breathe?
What is the main reason why insects are able to dominate different ecosystems?
What is the main reason why insects are able to dominate different ecosystems?
What is the primary characteristic of crustaceans?
What is the primary characteristic of crustaceans?
What is the main reason why insects are able to survive in a variety of environments?
What is the main reason why insects are able to survive in a variety of environments?
What is the primary reason for using a classification system in entomology?
What is the primary reason for using a classification system in entomology?
What is the term for the study of the structure of insects?
What is the term for the study of the structure of insects?
What is the term for the scientific naming system used in entomology?
What is the term for the scientific naming system used in entomology?
Who is the developer of the classification system used in entomology?
Who is the developer of the classification system used in entomology?
What is the term for the grouping of insects based on their characteristics?
What is the term for the grouping of insects based on their characteristics?
Why is the Law of Priority important in entomology?
Why is the Law of Priority important in entomology?
What is the term for the study of the genetics of insects?
What is the term for the study of the genetics of insects?
What is the phylum that includes the majority of insects?
What is the phylum that includes the majority of insects?
Flashcards
Entomology
Entomology
The study of insects.
Insect science disciplines
Insect science disciplines
"Morphology", "Physiology", "Ecology", "Genetics", "Taxonomy", and "Medical entomology".
Classification System
Classification System
A system for grouping and identifying living things.
Linnaeus' system
Linnaeus' system
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Arthropods
Arthropods
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Binomial System
Binomial System
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Law of Priority
Law of Priority
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Exoskeleton (arthropods)
Exoskeleton (arthropods)
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Segmented bodies (arthropods)
Segmented bodies (arthropods)
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Jointed Appendages (arthropods)
Jointed Appendages (arthropods)
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Bilateral Symmetry
Bilateral Symmetry
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Arachnida
Arachnida
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Chilopoda
Chilopoda
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Diplopoda
Diplopoda
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Crustacea
Crustacea
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Insecta
Insecta
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Cephalothorax
Cephalothorax
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Insect Success Factors
Insect Success Factors
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Study Notes
Introduction to Entomology
- Entomology is a field of insect science that involves the study of insects
- There are six disciplines in entomology: morphology, physiology, ecology, genetics, taxonomy, and medical entomology
Classification of Organisms
- Each living thing is placed in a group or category for classification and identification
- The classification system used is based on Linnaeus' system: Kingdom, Filum, Kelas, Order, Familia, Genus, Species
Why Use Classification System?
- 80% of all animals in the world are from the phylum of Arthropods (1 million species)
- Scientific naming is based on the binomial system, using Latin words with two words (e.g., Musca domestica Linnaeus)
- The law of priority states that if a scientist has given a name to an organism for the first time, then the name will remain even if other scientists try to change the name
Characteristics of Arthropods
- Shared characteristics of arthropods include:
- Segmented bodies
- Exoskeleton (made from chitin)
- Jointed appendages
- Bilateral symmetry
- Ventral nerve cord and dorsal circulatory system
Main Classes of Arthropods
- There are five main classes of arthropods:
- Arachnida
- Chilopoda
- Diplopoda
- Crustacea
- Insecta
Characteristics of Each Class
- Arachnida:
- 2 segmented bodies: cephalothorax and abdomen
- 4 pairs of appendages attached to cephalothorax
- No antenna
- Chilopoda:
- Head with eyes, mouth, and a pair of antennas
- Entire segmented body with a pair of legs per segment
- First pair of legs modified into stinging fangs for food gathering, defense, and protection
- Diplopoda:
- 2 pairs of appendages each segment
- 2 segmented bodies: head and body
- 2 pairs of antennas
- Crustacea:
- Mostly aquatic organisms
- 2 body parts: cephalothorax and abdomen
- 2 pairs of antennas
- Usually 5 pairs of legs
- Insecta:
- 3 body parts: head, thorax, and abdomen
- 3 pairs of legs and one pair of antenna
- Wings (either 1 or 2 pairs) attached to the muscles in the thorax
Success of Insects
- Insects are the most successful organism due to their:
- Capacity to reproduce
- Small size
- Exoskeleton with variety of appendages, mouth, and foot types
- Variety of ways to breathe
- Presence of wings
- Various forms throughout life
- Ease of adaptation
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