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Bio II Exam #2 Names
Fungi, Protosomes, Deuterostomes
44
Biology
Undergraduate 1
02/19/2014

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Term
Microsporodia
Definition
Monophyletic phyla in fungi. Obligate, intracellular, animal parasites. Both sexual and asexual reproduction. Unicellular. Long thought to be protists. Lack mitochondria
Term
Blastocladiomycetes
Definition
Monophyletic phyla in fungi. Uniflagellated zoospores. Allomyces is an example. It is a water mold. Female gametes secrete pheromone to attract male gametes. Giant mitochondria in its zoospores.
Term
Neocallimastigamycota
Definition
Monophyletic phyla in fungi. Digests plant biomass in mammalian herbivore rumens. Mammal depends on fungi for sufficient calories. Greatly reduced mitochondria that lack cristae. Reproduction through Zoospores. No evidence of sexual reproduction.
Term
Chtridiomycota
Definition
Monophyletic phyla in fungi. They are aquatic, flagellated fungi. Closely related to ancestral fungi. Have motile zoospores released by a pot like structure called chrytid. They use amphibian skin as a nutrient source
Term
Glomeromycota
Definition
Monophyletic phyla of fungi. A tiny group of fungi that forms intracellular associations with plant roots called arbuscular mycorrhizae. No evidence of sexual reproduction.
Term
Basidiomycota
Definition
Monophyletic phyla of fungi. Includes some of the most familiar fungi such as mushrooms, toadstools, puffballs, shelf fungi, etc. They are important plant pathogens like rusts and smuts.
Named for its basidium, a club shaped sexual reproductive structure.
Term
Ascomycota
Definition
Monophyletic phyla of fungi. Contains about 75% of the known fungi. Includes bread yeasts, common molds, cup fungi, truffles, and morels. They are serious plant pathogens. Penicillin producing fungi.
Term
Zygomycota
Definition
The only non-monophyletic fungi phyla. Include the common bread molds and a few human pathogens. They undergo both sexual and asexual reproduction
Term
Ecdysozoa
Definition
Protosome group of animals that shed their exoskeletons such as crustaceans and nematodes.
Term
Spiralia
Definition
Protosome group of animals that grow by graudual addition of mass to the body.
Term
Lophotrochozoa
Definition
Protosome group of animals that belongs to Spiralia. They move by muscular contraction. Includes annelida and mollusca.
Term
Platyzoa
Definition
Protosome group of animals that is part of Spiralia. They are tiny and flat animals that move by ciliary action. Includes flat worms Rotifera and Platyhelminthes.
Term
Porifera
Definition
Only animal that belongs to the group parazoa. They lack tissues, organs, and definite symmetry. Among the most abundant animals in the deep ocean. Composed of 3 layers: Outer epithelium, mesohyl, and choanocytes. Sexual (choanocytes) or asexual reproduction (fragmentation).
Term
Cnidaria
Definition
Eumetazoans that are diploblastic and have distinct tissues but no organs. Includes most marine fresh water species. Use nematocysts to capture prey. Key innovation in digestion strategy.
Term
Polyps
Definition
One of the two body forms of Cnidaria. Cylindrical and sessile.
Term
Medusa
Definition
One of the two body forms of Cnidaria. Umbrella shaped and free living.
Term
Ctenophora
Definition
Eumetazoans known as comb jellies. Mostly transparent and a few centimeters long. They use cilia for motion and are triploblastic.
Term
Acoelomorpha
Definition
Eumetazoans that are marine free living invertebrates. Have a primitive nervous system and lack a digestive cavity.
Term
Lophophore
Definition
A characteristic of lophotrochozoa. It is a horseshoe shaped crown of ciliated tentacles that surrounds the mouth. It is used in gas exchange and filter feeding.
Term
Platyhelminthes
Definition
Animals that belong to the group Platyzoa (Spiralia). Includes flatworms and tapeworms. Their bodies are mostly solid and most of them have an incomplete digestive cavity. They have simple nervous symptoms and most are hermaphroditic. Muscle contractions allow for food to be ingested and torn.
Term
Schistosoma
Definition
Blood flukes that are one of most important trematodes (platyhelminthes) to human health.
Term
Rotifera
Definition
Part of the platyzoa (spiralia) group. They are bilaterally symmetrical, have highly developed internal organs and are Corona – “wheel animals”.
Term
Mollusca
Definition
Part of the Lophotrochozoan (Spiralia) group. They are second in diversity only to arthropods. Included snails, slugs, clams, octopuses and others. Some have a shell, some do not. Important source of human food. Most are gonochoric (unisex).
Term
Polyplacophora
Definition
Class of mollusks; chitons. Oval bodies. 8 overlapping dorsal calcareous plates. Grazing herbivores.
Term
Gastropoda
Definition
Class of mollusks; limpets, snails, slugs.
Term
Bivalvia
Definition
Class of mollusks; clams, oysters, scallops.
Term
Cephalopoda
Definition
Class of mollusks; squids, octopuses, cuddle fishes, and chambered nautilus. Only mollusk with closed circulatory system.
Term
Radula
Definition
Rasping tongue like structure in molluscs used in feeding. It is used to scrape up algae and can be used to drill through clam shells.
Term
Torsion
Definition
Characteristic in the Gastropoda group of molluscs where the mantel cavity and anus are moved from the posterior to the front.
Term
Nemertea
Definition
Animal in the Lophotrochozoan group (Spiralia). Body plan resembles a flat worm however it has a complete gut with mouth and anus. Contains a fluid filled coleomic cavity called the Rhynchocoel.
Term
Annelida
Definition
Animal that is part of the Lophotrochozoans (Spiralia). They are segmented worms with their body built in repeated units. Has a closed circulatory system and and an excretory system.
Term
Lophophorates
Definition
Animal that is part of the Lophotrochozoans (Spiralia). Characterized by lophophore. Two classes Bryozoa and Brachiopoda.
Term
Bryozoa
Definition
One of the two classes of Lophophorates. Also called moss animals. They live in colonies and their anus opens near their mouth. Individuals secrete a tiny chitinous chamber called a zoecium.
Term
Brachiopoda
Definition
One of the two classes of Lophophorates. Two clades: Brachiopods and Phoronids. Brachiopods have two calcified shells. Lophophore lies on the body, between the shells. Phoronids secrete a chitinous tube. Extends lophophore to feed.
Term
Nematoda
Definition
Animals that belongs to the Ecdysozoa group. Vinegar eels, eelworms, and other roundworms. Members of this phylum are found everywhere – abundant and diverse. Digestive system well developed with stylets and pharynx.
Term
Necator
Definition
Nematode hookworm that causes anemia.
Term
Trichinella
Definition
Nematode that causes trichinosis which forms cysts in muscles. Infection is due to eating undercooked meat.
Term
Arthropoda
Definition
Animals in the Ecdysozoa group. Over a million species. Segmentation, exoskeleton and jointed appendages. Divided into four extant classes: Chelicerates, Crustaceans, Hexapods, and Myriapods.
Term
Chelicerate
Definition
Animal that belongs to the Arthropoda group (Ecdysozoa). Includes spiders, ticks, mites, scorpions.
Term
Crustacea
Definition
Animals that belong to the group Anthropoda (Ecdysozoa). Crabs, shrimps, lobsters, barnacles, crayfish.
Term
Decapoda (Decapod crustaceans)
Definition
Group of crustaceans such as shrimps, lobsters, crabs and crayfish with Swimmerets used in reproduction (carry eggs) and swimming and
Uropods which paddle on either side of the telson.
Term
Cirripedia
Definition
Sessile crustaceans (barnacles). Captures food with feathery legs. Hermaphroditic. Internal fertilization
Term
Hexapoda
Definition
Animals within the group Anthropoda (Ecdysozoa). Insects.
Term
Myriapoda
Definition
Animals within the group Anthropoda (Ecdysozoa). Centipedes and millipedes.
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