Questions and Answers
What is a cuticle?
Non-living outer layer secreted by the epidermis; stiff outer body wall that restricts growth and must be molted.
What does Phylum Nematoda consist of?
Nematodes found in virtually all habitats; important in biomedical and agricultural sciences.
What is Phylum Tardigrada known for?
Very small animals, less than 1 mm long, found in lichen and moss, able to survive extreme conditions.
What is cryptobiosis?
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What are rotifers?
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What distinguishes vertebrates from invertebrates?
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What is taxonomy?
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What is a mnemonic to remember the taxonomic ranks?
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What is the classification of tardigrades?
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What is the classification of humans?
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What is the classification of dolphins?
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What is the largest category used to classify organisms?
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There are _____ kingdoms.
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What defines prokaryotic cells?
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What are eukaryotic cells?
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Study Notes
Cuticle
- Non-living outer layer secreted by the epidermis
- Functions as a stiff outer body wall that restricts growth and requires molting
Phylum Nematoda
- Nematodes inhabit almost all environments, particularly in topsoil and leaf litter
- Exhibit a worm-like appearance
- Nematode parasites affect nearly all animal and plant species
- Significant for biomedical and agricultural research
Phylum Tardigrada
- Found in diverse habitats, specifically in lichen, moss, and algae
- Very small size, typically less than 1 mm, with 5 body segments and 8 legs
- Capable of surviving extreme conditions through a process known as cryptobiosis
- Commonly referred to as water bears, present on all continents
Cryptobiosis
- A state of suspended animation that allows tardigrades to endure severe conditions
- Capable of resisting extreme temperatures, ionizing radiation, and oxygen deficiency
- Can survive various preservatives and adverse environmental factors for years
Phylum Rotifera (Rotifers)
- Named for the circular arrangement of cilia resembling a rotating wheel
- Microscopic organisms found in both marine and freshwater environments
- Utilize a corona of cilia for filter feeding
Kingdom Animalia
- Comprises multicellular eukaryotes, including both vertebrates and invertebrates
Vertebrate
- Defined as an animal possessing a backbone
Invertebrate
- Refers to an animal that lacks a backbone
Taxonomy
- The scientific discipline focused on classifying living organisms
Mnemonic for Taxonomy Classification
- "King, Philip, Came, Over, For, Great, Spaghetti" represents the hierarchy: Kingdom, Phylum, Class, Order, Family, Genus, Species
Tardigrade Classification
- Kingdom: Animalia
- Phylum: Tardigrada
Human Classification
- Kingdom: Animalia
- Phylum: Chordata
- Class: Mammalia
- Order: Primates
- Family: Hominidae
- Genus: Homo
- Species: Sapiens
Dolphin Classification
- Kingdom: Animalia
- Phylum: Chordata
- Class: Mammalia
- Order: Cetartiodactyla
- Family: Delphinidae
- Genus: Tursiops
Leopard Gecko Classification
- Kingdom: Animalia
- Phylum: Chordata
- Class: Reptilia
- Order: Squamata
- Family: Eublepharidae
- Genus: Eublepharis
Kingdom
- Represents the first and largest category used for classifying living organisms
Six Kingdoms
- Archaebacteria: Prokaryotic, single-celled organisms
- Eubacteria: Prokaryotic, single-celled organisms
- Protista: Eukaryotic, microscopic organisms with a nucleus
- Fungi: Multicellular organisms including fungi and mushrooms
- Plantae: Multicellular, typical plants
- Animalia: Multicellular organisms, known as animals
Prokaryotic
- Cells that do not contain a nucleus
Eukaryotic
- Cells that possess a nucleus
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Description
Explore the fascinating world of microscopic organisms with flashcards on tardigrades, rotifers, and nematodes. Each card provides key definitions and insights into their roles in various ecosystems and their significance in science. Perfect for students in biology or anyone interested in these unique life forms.
