ENTO 208: EXAM 1
54 Cards in this Set
| Front | Back |
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In arthropods, where is the nerve cord found?
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Ventrally
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What type of insects tend to have large compound eyes?
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Flying
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What body regions do members of Crustacea have?
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Cephalothorax and abdomen
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Does fertilization of an insect egg occur immediately follow mating?
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No
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Why is horseshoe crab blood sought after and harvested?
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Their blue blood is used in medical and research applications due to its unique ability to detect bacterial endotoxins
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What defines an agent of a disease?
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Biological pathogen that causes a disease
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What is the agent of Lyme Disease? What type of pathogen is it?
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Borrelia Burgdorferi
Bacterium
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What is the agent of malaria? What type of pathogen is it?
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Plasmodium spp.
Protozoan
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What is the agent of Chagas Disease? What type of pathogen is it?
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Trypanosoma cruzi
Protozoan
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What is the agent of Plague? What type of pathogen is it?
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Yersinia Pestis
Bacterium
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What is the agent of West Nile? What type of pathogen is it?
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West Nile Virus
Virus
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What is it known as when a disease has a frequency and acquisition rate higher than expected?
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Epizootic or epidemic
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What is it known as when a disease is maintained locally at normal levels?
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Enzootic or endemic
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Compound eyes are made of...
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Ommatidia
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What insect has hemoglobin?
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Chironomids
(Bay flies, bloodworms (larval state))
Diptera
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Forward-facing mouthparts
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Prognathous
(termites, ants, etc.)
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Downward-facing mouthparts
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Hypognathous
(grasshoppers, etc.)
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Backwards-facing mouthparts
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Opisthognathous
(Sucking members of hemiptera (true bugs))
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How do insects filter their 'blood?'
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Malpighian tubules
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The most primitive mouthparts
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Chewing
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Where is the heart of an arthropod found?
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Dorsally
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What types of mouthparts are mandibulate?
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Chewing (primitive)
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What types of mouthparts are in the group Haustellate?
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Sucking/piercing
Probing/sipping
Sponging/lapping
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What is the most notable characteristic of brown recluse spiders?
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Violin shaped marking on dorsal side of the abdomen
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Is natural selection the same as evolution?
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No
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Why are blister beetles dangerous to livestock?
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Their hemolymph contains CANTHARIDIN, which is a skin irritant that is potentially lethal when ingested
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What mouthpart forms the 'sucking tube' in Anoplura (sucking lice)?
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Labium
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What characterizes Arachnida?
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Four pairs of legs
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What is the order of Insecta that includes the most species?
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Coleoptera
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What are the thickened regions of the insect ventral nerve cord that contain nerve cells?
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Ganglia
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What organ makes up the "spring tail" found in Collembola?
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Furculum
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What is a reservoir host?
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Host essential for transmission of the pathogen to new hosts. During non-transmission periods, the pathogen can be sustained or multiplied within this host.
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Which order contains bed bugs?
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Hemiptera (true bugs)
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Is "Arthropod" Kingdom, Phylum, Class, Order, Family, Genus, or Species?
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Phylum
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What characterizes an arthropod?
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Jointed legs/appendages
Exoskeleton composed of chitin
Segmented bodies
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How are the classification groups ordered (largest to smallest)?
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Kingdom
Phylum
Class
Order Family
Genus
Species
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What is a major downside to having a high surface area to volume ratio?
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Loss of heat and water
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What does hematophagy mean?
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Blood feeding
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What body regions does Diplopoda have? What are they?
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Head and Body
Millipedes
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What is a zoonotic disease?
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Disease caused by a pathogen that infects both humans and animals
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How many species of scorpions are in Texas alone?
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18
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What is the primary function of antennae?
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True
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What is the dorsal surface of the abdomen called?
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Tergum
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What is the fluid-filled body cavity in arthropods called?
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Haemocoel
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What mouthpart is used for cutting skin during feeding?
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Maxilla
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What does ovaparious mean?
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Egg bearing, embryonic development occurs outside mother
Most common type
R-strategist: many offspring, little prenatal care
Egg-tending: often done by males
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What does viviparious mean?
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Embryonic development inside mother, no egg, live birth
K-strategist: few offspring, more prenatal care
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What does ovoviviparious mean?
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Embryonic development inside an egg inside the mother, live birth
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What does "arthropod" literally mean?
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"Jointed leg"
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What is a vector?
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Anything that can carry and transmit a disease from one host to another
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What is unique about the mouthparts of members of Lepidoptera?
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Lack of mandibles
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Are immatures of insects that are hemimetabolous always aquatic?
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No
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What are Chironomids?
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Horseshoe crabs
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What is the circulatory fluid in Arthropods that is comparable to hemoglobin in other animals?
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Hemolymph
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ENTO 208 - Insect Orders