Podcast
Questions and Answers
What is cryptobiosis in tardigrades?
What is cryptobiosis in tardigrades?
Velvet worms use oral papillae to trap prey before consuming them.
Velvet worms use oral papillae to trap prey before consuming them.
True
What morphological characteristic is used to differentiate nematode species?
What morphological characteristic is used to differentiate nematode species?
Body size, shape, and reproductive structures
Tardigrades can be commonly found in __________ environments.
Tardigrades can be commonly found in __________ environments.
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Match the following structures with their functions in Porifera:
Match the following structures with their functions in Porifera:
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Which anatomical structure helps plant-parasitic nematodes feed on plants?
Which anatomical structure helps plant-parasitic nematodes feed on plants?
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All species of priapulids have free-living larvae.
All species of priapulids have free-living larvae.
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Cycloneuralia refers to a group of related phyla that share a __________ structure.
Cycloneuralia refers to a group of related phyla that share a __________ structure.
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What is a defining characteristic of Phylum Annelida?
What is a defining characteristic of Phylum Annelida?
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All arthropods possess a closed circulatory system.
All arthropods possess a closed circulatory system.
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What term is used to describe the shedding of the exoskeleton in arthropods?
What term is used to describe the shedding of the exoskeleton in arthropods?
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The appendage-like projections on most segments of annelids are called __________.
The appendage-like projections on most segments of annelids are called __________.
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Match the following subphyla of Arthropoda with their characteristics:
Match the following subphyla of Arthropoda with their characteristics:
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Which group of Annelida is known for having the most species?
Which group of Annelida is known for having the most species?
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Hemimetabolous insects undergo complete metamorphosis.
Hemimetabolous insects undergo complete metamorphosis.
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Name one reason why arthropods, especially insects, have been so successful as a group.
Name one reason why arthropods, especially insects, have been so successful as a group.
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Study Notes
Exam 1 Study Guide - Invertebrate Zoology
- Important: Vocabulary terms from the PowerPoint slides are key.
- General Knowledge: Understand the phyla, their reproductive methods, habitats (marine, terrestrial, freshwater), and distinguishing characteristics.
Week 1: Introduction to Invertebrates
- Study Themes: Reasons for studying invertebrates, role in the world, evolution of unicellular life, classification systems (embryology, development, body symmetry, body cavity types), phylogenies, and the importance of classification.
Week 2: Phylum Annelida - Hydrostatic Skeleton
- Hydrostatic Skeleton: Definition, function (movement), importance in aquatic environments, role of longitudinal and circular muscles in locomotion.
- Annelida Characteristics: Defining traits, metamerism, septal role in locomotion, three major groups (and their characteristics), different life history strategies (e.g., errant vs. sessile, epitoky, trochophore larvae), unique features of Echiura, Sipuncula, Hirudinea, and Oligochaeta
- Key Differences: Differentiate Annelida groups regarding reproduction (e.g., trochophore larvae).
Weeks 3 & 4: Phylum Arthropoda & Related Phyla
- Arthropoda: Defining characteristics, reasons for success (especially insects), exoskeleton composition (and role in locomotion), ecdysis (molting) and its use in animal classification.
- Other Phyla: Understand Onychophora, Tardigrada, and their relationships to Arthropoda.
Week 5: Phylum Nematoda & Related Phyla
- Nematoda: Round cross-section, morphological characteristics for species differentiation, Ecdysozoa classification, cuticle composition (locomotion limited compared to annelids), parasitic feeding strategies (plant parasites, PPNs).
- Related Phyla: Study Nematomorpha, Priapulida, Kinorhyncha, and Loricifera, their shared characteristics, life histories, and potential for eradication.
Week 6: Phyla Porifera & Placozoa
- Porifera (Sponges): Defining characteristics, cell types and functions, water flow through the ostia, atrium, and osculum, gemmules, different body construction, spicules for classification, symbiotic relationships (Venus's flower basket and shrimp), sexual and asexual reproduction strategies.
- Placozoa: Class characteristics, covered in class.
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Description
Test your knowledge on the anatomy and physiology of invertebrates, including tardigrades, nematodes, and arthropods. This quiz covers essential characteristics, feeding mechanisms, and classification of various invertebrate species.
