Questions and Answers
What Phylum is fixed to an underwater surface and filters bacteria from water that is drawn into their loosely organized body cavity?
Porifera
What Phylum has radial symmetry with tentacles, is sometimes fixed to a surface as adults, while others are free floating in marine environments?
Cnidaria
What Phylum is made up of flatworms with a ribbon-like form that live in a variety of environments on land and sea or as parasites of other animals?
Platyhelminthes
What Phylum is made up of soft-bodied animals protected by a hard shell, whose body plan consists of a single muscular foot and body cavity enclosed in a fleshy mantle?
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What Phylum's organisms' bodies are divided into a set of repeated segments?
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What Phylum is made up of roundworms with a cylindrical body shape that is very diverse and widespread in many environments?
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What Phylum consists of segmented animals in which the segments are specialized into different roles, whose body is completely enclosed in an external skeleton that molts as the animal grows?
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What Phylum is made up of slow moving or immobile creatures without segmentation but with radial symmetry, and has an internal skeleton with projections that give it a spiny or armored surface?
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What Phylum is made up of animals with a spinal cord, including all large land animals, as well as fish, aquatic mammals, and salamanders?
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What is the variety within and among living organisms?
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What type of biologist specializes in describing and categorizing a particular group of organisms?
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What is a unit of time according to the rocks and fossils characteristics?
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What is the most inclusive biological category?
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What are the 3 domains?
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What Kingdom is Eukaryotic, multicellular, makes its own food, and is mainly stationary?
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What Kingdom is Eukaryotic, multicellular, relies on other organisms for food, and is mobile for at least part of its life?
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What Kingdom is Eukaryotic, multicellular, relies on other organisms for food, reproduces by spores, and its body is made up of thin filaments called hyphae?
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What Kingdom is Eukaryotic, mostly single celled, has a wide diversity of lifestyles, including plant-like, fungus-like, and animal-like types?
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What Kingdom is Prokaryotic and mostly single celled forms, although some form permanent aggregates of cells?
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What are prokaryotic organisms that are known from extreme environments?
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What type of cell does not have a nucleus or membrane-bounded organelles?
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What type of cell has a nucleus and membrane-bounded organelles?
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What is a microscopic organism, like bacteria or archaea, known as?
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What type of scientist studies microscopic organisms, especially prokaryotes?
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What is a chemical that kills or disables bacteria called?
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What is the theory that organelles such as mitochondria and chloroplasts in eukaryotic cells evolved from prokaryotic cells that took up residence inside ancestral eukaryotes?
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What time period was there relatively rapid evolution of the forms of multicellular life that occurred approximately 550 million years ago?
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What type of scientist studies Kingdom Animalia?
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What is an animal with a backbone or spinal cord referred to as?
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What is an animal without a backbone or spinal cord referred to as?
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What type of reproductive cell is capable of developing into an adult without fusing to another cell?
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Study Notes
Phylum Classification
- Porifera: Comprises creatures fixed to underwater surfaces that filter bacteria from water through a loosely organized body cavity.
- Cnidaria: Characterized by radial symmetry and tentacles; can be either fixed to surfaces as adults or free-floating in marine environments.
- Platyhelminthes: Includes flatworms with a ribbon-like form, occupying a variety of habitats, including land, sea, and as parasites.
- Mollusca: Encompasses soft-bodied animals typically protected by a hard shell, featuring a muscular foot and a body cavity enclosed by a fleshy mantle.
- Annelida: Notable for having bodies divided into a series of repeated segments.
- Nemotoda: Contains roundworms with a cylindrical shape, displaying great diversity in various environments.
- Arthropoda: Composed of segmented animals with specialized segments, characterized by an external skeleton that molts during growth.
- Echinodermata: Consists of slow-moving or immobile creatures lacking segmentation and featuring radial symmetry with an internal skeleton covered by spiny projections.
- Chordata: Includes animals with a spinal cord, encompassing all large land animals, fish, aquatic mammals, and amphibians.
Biological Concepts
- Biodiversity: Refers to the variety present within and among living organisms.
- Systematist: A biologist specializing in the classification and categorization of specific groups of organisms.
- Geologic Period: A temporal division based on the characteristics of rocks and fossils.
- Domain: The highest taxonomic rank in biological classification, encompassing the broadest groups of life.
- Three Domains: Bacteria, Archaea, and Eukarya represent the primary categories of life.
Kingdom Classification
- Plantae: Eukaryotic and multicellular kingdom, capable of photosynthesis, primarily stationary.
- Animalia: Eukaryotic, multicellular kingdom reliant on other organisms for food, exhibits mobility during part of life.
- Fungi: Eukaryotic, multicellular kingdom that depends on other organisms for food, reproduces via spores, and features hyphal structures.
- Protista: Primarily unicellular eukaryotic kingdom, displaying diverse lifestyles across plant-like, fungus-like, and animal-like categories.
- Bacteria: Prokaryotic kingdom mainly consisting of single-celled organisms, some of which can form aggregates.
- Archaea: Prokaryotic organisms adapted to extreme environments.
Cellular Biology
- Prokaryote: Cells that lack a nucleus and membrane-bound organelles.
- Eukaryote: Cells characterized by the presence of a nucleus and membrane-bounded organelles.
- Microbe: Refers to microscopic organisms, including bacteria and archaea.
- Microbiologists: Scientists specializing in the study of microscopic organisms, particularly prokaryotes.
Medical and Evolutionary Concepts
- Antibiotic: A chemical compound that can kill or inhibit bacterial growth.
- Endosymbiotic Theory: Proposes that organelles like mitochondria and chloroplasts evolved from prokaryotic cells that entered ancestral eukaryotic cells.
- Cambrian Explosion: A critical period of rapid evolutionary development of multicellular life, occurring roughly 550 million years ago.
Zoology
- Zoologists: Scientists who focus on the study of the Animalia kingdom.
- Vertebrate: Animals possessing a backbone or spinal cord.
- Invertebrate: Animals lacking a backbone or spinal cord.
- Spore: A reproductive unit capable of developing into an adult organism without the fusion of another cell.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge on various animal phyla with these flashcards. Each card provides a definition and asks you to identify the corresponding phylum, such as Porifera, Cnidaria, and Platyhelminthes. Perfect for biology students looking to reinforce their understanding of animal classifications.
