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71 terms

Invertebrates

Mr. K's AP Biology
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Sponges, Cnidarians, Flatworms, Roundworms, Segmented worms, Molluscs, Arthropods, Echinoderms, Chordatas
What are the 9 major animal phyla?
Sponges, Cniderians, Flatworms, Roundworms
What were the four major animal phyla prior to the Cambrian Explosion?
None, Radial, Bilateral
What are the three types of symmetry?
Cnidarians, echinoderms
Which of the 9 major animal phyla have radial symmetry?
Coelem
Body cavity lined completely by mesoderm embryonic tissue, which separates the outer body wall from the inner digestive/other organs.
Ectoderm, mesoderm, Endoderm
What are the 3 major embryonic cell layers?
Flatworms
Which of the 9 major animal phyla don't have a coelom?
Roundworms
Which of the 9 major animal phyla have a pseudocoelom?
Pseudocoelom
A body cavity that is not completely lined by mesoderm
Sponges
Which of the 9 major animal phyla are filter feeders?
Sponges
Which of the 9 major animal phyla are colonies of cells?
Sponges
Which of the 9 major animal phyla are likely descended from choanoflagellates?
Sponges
Which of the 9 major animal phyla have incurrent pores that allow water to move in and excurrent pores that pass the water out?
Sponges
Which of the 9 major animal phyla are supported internally by spicules, which distinguish one species from another?
Cnidarians, Platyhelminthes (flatworms)
Which of the 9 major animal phyla have a gastrovascular cavity which breaks down food extracellularly for absorption?
Cnidarians
Which of the 9 major animal phyla have primitive muscle cells for movement, and a primitive nerve net for coordination of the body?
Cnidarians
Which of the 9 major animal phyla include box jellyfist and chironex, the most potent venoms in the world?
Cnidarians
Which of the 9 major animal phyla have nematocysts, which are special organelles that are used to stab and envenomate prey/other animals?
Cnidarians. Polyps (sissile/nonmotile) and medusas (free-swimming)
Which of the 9 major animal phyla have two different body forms that are alternated between during life, and what are the names of the two forms?
Cnidarians
Which of the 9 major animal phyla include hydras, sea anemones, corals, and jellyfish?
Platyhelminthes
Which of the 9 major animal phyla include planarias (free living), flukes (liver and blood parasites), and tapeworms (digestive parasites)?
Platyhelminthes
Which of the 9 major animal phyla were the first hunters on Earth?
Platyhelminthes
Which of the 9 major animal phyla are mostly parasites?
Platyhelminthes
Which of the 9 major animal phyla have primitive animal memory?
Platyhelminthes
Which of the 9 major animal phyla have flukes that absorb their food from their host tissues?
Platyhelminthes (tapeworms)
Which of the 9 major animal phyla hang in their host's digestive tract with scolex and reproduce with proglottids?
Nematoda (roundworms)
Which of the 9 major animal phyla were the first to have a complete gut (mouth, intestine, anus)?
Nematoda
Which of the 9 major animal phyla posses the pseudocoelom?
Nematoda
Which of the 9 major animal phyla include ascaris, hookworm, heartworm, filaria worm, and Guinea worm?
Mollusca
Which of the 9 major animal phyla includes the largest invertebrates in the world?
Mollusca
Which of the 9 major animal phyla has 4 major groups: Chitons, gastropods, bivalves, cephalopods?
Mollusca
Which of the 9 major animal phyla are the first to have most major body organ systems (open circulatory, respiratory, digestive, sensory, nervous, muscular)?
Mollusca
Which of the 9 major animal phyla have a mantle in some species?
Cephalopods
Which of the 4 major groups of Mollusca are the "smartest" of the invertebrates?
gastropods, shell
Nudibranchs and slugs are __________ without a __________.
Mollusca
Which of the 9 major animal phyla invented speed and intelligence in the Cambrian evolution arms race to compete with other evolving vertebrates and arthropods?
Annelids
"Segmented worms"; have all major systems that molluscs have.
Annelids
Which of the 9 major animal phyla have bodies that are generally soft and divided into repeating parts (segments)?
Annelids
Which of the 9 major animal phyla are tunnelers and may have contributed to the melting of "snowball earth"?
Earthworms, bristleworms, leeches
What are the three types of annelids?
Arthropods
Which of the 9 major animal phyla are the most dominant animal force on earth?
Myriapods, crustaceans (decapods), arachnids, insects
What are the 4 major types of arthropods?
Arthropods
Which of the 9 major animal phyla were the first to achieve independent flight?
Arthropods
Which of the 9 major animal phyla invented exoskeletons and jointed legs, which are the foundation of their success?
Arthropods
Which of the 9 major animal phyla have an advanced nervous system to interpret and respond to the world?
Peripatus
Which living organism today may be the descendent of the original multiple-segmented arthropod, that likely evolved from an annelid-ancestor?
Merostomata
"Horseshoe crabs"; descended from some of the original arthropods.
Millipedes (herbivores, 4 legs per segment) and centipedes (carnivores, 2 legs per segment)
What are the two types of myriapods?
Cephalothorax and abdomen
What are the 2 major body segments of the crustaceans?
10
How many legs/appendages do crustaceans often have?
Crustaceans
Crabs, lobsters, shrimp, crayfish, pillbugs, amphipods, copepods
Cephalothorax and abdomen
What are the 2 major body segments of arachnids?
palps, legs
Arachnids have 2 _____ and 8 _____.
Arachnids
Spiders, ticks, scorpions, and mites.
Orthoptera
Grasshoppers, crickets
Lepidoptera
Butterflies, moths
Hymenoptera
Bees, wasps, ants
Coleoptera
Beetles
Diptera
Flies
Isoptera
Termites
Odonata
Dragonflies
Head, thorax, abdomen
What are the 3 major body segments of insects?
Echinoderms
Which of the 9 major animal phyla are spiny-skinned animals?
Echinoderms
Sea urchins, sand dollars, starfish, brittle stars, sea cucumbers, sea lilies, feather stars
Echinoderms
Which of the 9 major animal phyla are deuterostomes?
Echinoderms
Which of the 9 major animal phyla are on the main line of evolution toward chordates?
Echinoderms
Which of the 9 major animal phyla have a water vascular system that is used to operate the tube feet that grip prey and pull them over their substrate?
Chordates
Which of the 9 major animal phyla includes all animals that have pharyngeal gill slits and a notochord at least some point in their life?
Urochordates (sea squirts), cephalochordates (lancelets), and vertebrates
What are the three subphyla of Chordata?
Urochordates
____________ have bilateral larvae that show their evolutionary ancestry.
Cephalochordates
_______________ look like primitive fish but lack eyes, paired fins, and an advanced nervous system.