Questions and Answers
What is the definition of Phylum Arthropoda?
What are organisms in Subphylum Trilobita commonly known as?
trilobites
What does Subphylum Chelicerata include?
spiders, scorpions, etc.
Which classes are included in Subphylum Uniramia?
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What types of organisms are found in Subphylum Crustacea?
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What organisms are classified under Class Arachnida?
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What is commonly referred to as a horse-shoe crab?
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What type of arthropods are centipedes classified as?
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What is the common name for millipedes?
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What type of insects are included in Class Coleoptera?
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Which class do flies belong to?
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What are dragonflies and damselflies classified as?
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What is the common name for organisms in Class Orthoptera?
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What are true bugs classified under?
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Which class do butterflies and moths belong to?
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What is a sea spider classified as?
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Study Notes
Phylum Arthropoda Overview
- Known as "jointed feet," indicating the primary characteristic of arthropod limbs.
- Represents the largest phylum in the animal kingdom, encompassing a diverse range of species.
Subphylum Trilobita
- Contains extinct marine arthropods known as trilobytes.
- Characterized by a three-lobed body structure and segmented anatomy.
Subphylum Chelicerata
- Includes arachnids such as spiders and scorpions.
- Distinguished by having chelicerae (pincer-like mouthparts) instead of antennae.
Subphylum Uniramia
- Consists of classes such as Chilopoda (centipedes), Diplopoda (millipedes), and Insecta (insects).
- Features uniramous appendages, meaning limbs branch once.
Subphylum Crustacea
- Comprises marine and freshwater organisms like crabs, lobsters, and crayfish.
- Possesses two pairs of antennae and biramous (branched) appendages.
Class Arachnida
- Includes spiders, scorpions, ticks, and mites.
- Generally characterized by having eight legs and no antennae.
Class Xiphosura
- Known as horseshoe crabs, which are marine arthropods.
- Important for their role in biomedical research due to their unique blue blood.
Class Chilopoda
- Encompasses centipedes, which are carnivorous and have one pair of legs per body segment.
- Prefer moist environments; capable of venomous bites.
Class Diplopoda
- Consists of millipedes, which are primarily detritivores, feeding on decaying organic matter.
- Characterized by two pairs of legs per body segment.
Class Coleoptera
- Represents beetles, which is the largest class within the insect order.
- Distinguished by their hardened forewings (elytra) that cover their hindwings.
Class Diptera
- Includes flies, known for having a single pair of wings.
- Characterized by their diverse feeding habits and often play significant roles in pollination.
Class Odonata
- Comprises dragonflies and damselflies, known for their agile flight and large, multifaceted eyes.
- Inhabit freshwater habitats and are important predators of other insects.
Class Orthoptera
- Contains grasshoppers and crickets, characterized by their jumping ability and stridulation (sound production).
- Have strong hind legs adapted for jumping and usually exhibit herbivorous feeding habits.
Class Hemiptera
- Known as true bugs, distinguished by their characteristic sucking mouthparts.
- Includes a wide variety of species with diverse feeding habits.
Class Lepidoptera
- Encompasses butterflies and moths, recognized by their large wings covered in scales.
- Often seen as important pollinators and indicators of environmental health.
Class Pycnogonida
- Known as sea spiders, which inhabit marine environments and are often found in deep waters.
- Characterized by their long legs relative to their body size and unique feeding habits, primarily consuming soft-bodied invertebrates.
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Description
Test your knowledge of Phylum Arthropoda with these flashcards. Explore various subphyla such as Trilobita, Chelicerata, and Uniramia. Perfect for students studying biology and taxonomy.
