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PPSE Midterm 1
People, Pests, and Plagues Midterm 1
147
Other
Not Applicable
02/03/2011

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Term
Abdomen
Definition
the posterior most body region of insects.
Term
Acarina
Definition
An order of the Arachnida, comprising the mites and ticks.
Term
Action Potential
Definition
the nerve impulse that travels across the axon, in the form of electrical energy.
Term
Anatomy (Morphology)
Definition
the study of an insect’s body structure as well as the naming of body parts.
Term
Antennae
Definition
sensory structures found on the head of insects.
Term
Anus
Definition
opening at the end of the digestive system where the wasted is flushed out.
Term
Apical
Definition
towards the tip.
Term
Aposematic
Definition
Coloration that indicates danger.
Term
Araneae
Definition
An order of the Arachnida, comprising the spiders.
Term
Asexual Reproduction
Definition
a process of reproduction that rarely if ever involves males; does not require the exchange of gametes.
Term
Axon
Definition
the long, unbranched portion of a nerve cell, along which the action potential is generated.
Term
Balloon
Definition
In spiders, the action of sending out a thread of silk and letting the wind carry it aloft.
Term
Basal
Definition
towards the base.
Term
Basement Membrane
Definition
the innermost layer of the integument (exoskeleton).
Term
Biodiversity
Definition
the number of species of all living organisms on Earth.
Term
Biomass
Definition
the total collective matter that is a results from a conversion of solar energy.
Term
Butterfly
Definition
a member of the Lepidoptera which is diurnal, usually colorful, and whose antennal tips are swollen.
Term
Carnivore
Definition
organisms that only eat meat.PPSC 110-People, Pests and Plagues
Term
Caterpillar
Definition
an immature Lepidoptera.
Term
Central Nervous System
Definition
made up of the brain and the spinal; contain numerous paired ganglia.
Term
Cephalothorax
Definition
the fused head and thorax in the spiders.
Term
Cerci
Definition
the appendages on the posterior of insects' abdomens, which function as sensory structures, similar to the antennae of the head.
Term
Chelicerae
Definition
the claw-like mouthparts of arachnids.
Term
Chemoreceptor
Definition
a receptor that is sensitive to chemical stimuli, used in detecting smell and taste.
Term
Chitin
Definition
a polysaccharide (complex sugar) that comprises about 50% of insect cuticle.
Term
Chrysalis
Definition
in some lepidopteran species, the pupa that lacks the silken cocoon.
Term
Complete metamorphosis
Definition
holometabolism.
Term
Compound Eye
Definition
refers to an insect’s eye that is comprised of several to many ommatidia.
Term
Cocoon
Definition
the silken covering over the pupa.
Term
Cornea
Definition
in the human eye, the outermost protective layer, which begins to focus light; in insects, the outermost layer of an ommatidium, which functions to protect it.
Term
Cornicles
Definition
secretory appendages on the end of the abdomen in aphids.
Term
Crochets
Definition
hook-like structures on the end of the prolegs in immature Lepidoptera, which further help caterpillars cling to surfaces.
Term
Crop
Definition
part of the insect gut which functions to store food.
Term
Cryptic
Definition
secretive or hidden. Referring to the ability of some insects to blend into their envioronment because of camoflauged coloration or shape.
Term
Crystalline Cone
Definition
lies just beneath the cornea and helps to focus light onto the retinula cells.
Term
Cuticle
Definition
the outer layer of the exoskeleton, comprised primarily of chitin and proteins, and topped with wax.
Term
Cytoplasm
Definition
fluid inside a cell.
Term
Decomposers
Definition
an organism that feeds on dead plant or animal matter, or animal waste products.
Term
Dendrite
Definition
the part of the neuron that receives nerve impulses from the terminal arborization of an adjacent neuron.
Term
Digestive System (Gut)
Definition
the metabolic system responsible for the breakdown and processing PPSC 110-People, Pests and Plagues of food.
Term
Diploid
Definition
having two sets of chromosomes.
Term
Diptera, lower
Definition
the more primitive members of the Diptera, characterized by multisegmented antennae and long legs.
Term
Diptera, higher
Definition
the more advanced members of the Diptera, characterized by bristle-like antennae and sponging mouthparts.
Term
Direct Flight
Definition
primitive method of flying in which muscles are attached to the bases of the wings.
Term
Drone
Definition
a male honeybee, whose sole purpose is to engage in a nuptial flight and mate with a virgin queen.
Term
Echolocation
Definition
high frequency sounds that organisms make in order to locate objects.
Term
Ecological Niche
Definition
specifically defines what an organism needs to survive, that is, the sum of the conditions (temperature, pH, moisture, etc.) and resources (food, water, etc.) under which it can live.
Term
Ecology
Definition
the study of organisms and the environment where they live.
Term
Elytron (plural=elytra)
Definition
a sclerotized wing cover found in the Coleoptera.
Term
Embryo
Definition
the developmental stage between fertilization and the immature stage.
Term
Endocrine System
Definition
the metabolic system of hormones.
Term
Endoparasite
Definition
a parasite which lives within its host (see Parasite).
Term
Epidermis
Definition
the layer of cells above the basement membrane; among its functions is to secrete the cuticle.
Term
Esophagus
Definition
the tube-like, non-musculated part of the insect gut.
Term
Exoskeleton
Definition
the protective outer covering of arthropods, consisting of basement membrane, epidermis and cuticle. Also known as the integument.
Term
Fang
Definition
the distal end of a chelicera in the Araneae, from where poison is injected into prey.
Term
Food Channel
Definition
a groove formed by the modified mandibles and maxillae, through which fluids are sucked up.
Term
Fully Social
Definition
In some Hymenoptera and all Isopera, a life cycle in which the queen (and hence the colony) live for many years.
Term
Gastric Caecae
Definition
an organ which is part of the insect digestive system, which secretes digestive enzymes. Analogous to the pancreas of humans.PPSC 110-People, Pests and Plagues
Term
Glyerol
Definition
an alcohol with three hydroxyl groups that is used as antifreeze by many insects to survive cold winter temperatures. Glycerol has a minimum freezing temperature of about -35 degrees (C or F).
Term
Habitat
Definition
A location where an species or assemblage of species lives.
Term
Halteres
Definition
the vestigial hindwings of the Diptera, which now resemble small knobs and are used for balance, not flying.
Term
Haploid
Definition
the typical number of chromosomes contained in an organism.
Term
Hemelytron
Definition
means half-hardened wing. The forewing of the true bugs (Hemiptera).
Term
Hemimetabolism
Definition
the type of insect metamorphosis in which immatures resemble the adults with the exception of wings and sexual organs. See incomplete metamorphosis.
Term
Hemocytes
Definition
insect blood cells.
Term
Hemolymph
Definition
insect blood.
Term
Herbivore
Definition
an organism that solely eats plant material.
Term
Holometabolism
Definition
the type of insect metemorphosis in which a pupal stage is present, and the immature stage does not resemble the adult. See complete metamorphosis.
Term
Honeydew
Definition
a sugary waste product, commonly released by Hemiptera such as aphids, whiteflies, scales, psyllids and mealybugs.
Term
Hormones
Definition
chemicals produced by endocrine cells or glands, used for internal communication.
Term
Hydrophobic
Definition
not water soluble, literally, "water hating."
Term
Hypostome
Definition
a structure found in the Acarina; on ticks it has backward facing barbs.
Term
Incomplete metamorphosi
Definition
Ametabolism or hemimetabolism.
Term
Indirect Flight
Definition
the more advanced way of insect flight, in which the flight muscles are attached to the thoracic body wall.
Term
Integument
Definition
synonym for exoskeleton.
Term
Iris
Definition
in humans, the colored, musculated part of the eye that flanks the pupil.
Term
Labium
Definition
in chewing insects, the lower "lip."
Term
Labrum
Definition
in chewing insects, the upper "lip."
Term
Larva
Definition
an immuture from the orders which exhibit complete metamorphosis (Neuroptera, Coleoptera, Diptera, Lepidoptera and Hymenoptera), or a first instar mite.PPSC 110-People, Pests and Plagues
Term
Lens
Definition
the biconvex structure in the human eye that focuses light onto the retina.
Term
Light Receptors
Definition
a type of sensory structure that captures light.
Term
Linnaeus, Carolus
Definition
18th century Swedish naturalist, considered to be the father of organismal classification.
Term
Maggot
Definition
the larva of the Diptera.
Term
Malpighian Tubules
Definition
part of the insect excretory system, they function to filter nitrogenous wastes from the insect's body, analogous to human kidneys.
Term
Mandible
Definition
the stout tooth-like mouthpart of chewing or mandibulate insects.
Term
Maxilla
Definition
the slender tooth-like mouthpart of chewing or mandibulate insects.
Term
Measure of Success
Definition
a phenomenon that is an indicator of how well a group of organisms is performing on Earth.
Term
Mechanoreceptor
Definition
a sensory structure comprised of cuticle, attached to a single neuron, that responds to touch, vibration or sound.
Term
Metamorphosis
Definition
the arthropod transformation from egg to immature to adult.
Term
Midgut
Definition
located in the middle of the stomach, it contains the gastric caecae and further breaks down the food.
Term
Molting
Definition
the shedding of the cuticle, which takes place between stages of immature insects.
Term
Moth
Definition
A member of the Lepidoptera which is nocturnal, usually drab in coloration and whose antennae are feathery or multisegmented.
Term
Nerve cells (neuron)
Definition
the cell of the nervous system, responsible for receiving and transmitting nerve impulses from one area of the body to another.
Term
Neurotoxin
Definition
a chemical that interferes with the nervous system.
Term
Nit
Definition
an immature louse (Phthiraptera).
Term
Nucleus
Definition
the part of the cell which contains the genetic material (DNA).
Term
Nymph
Definition
an immuture from the orders which exhibit incomplete metamorphosis.
Term
Ocellus (plural=ocelli)
Definition
the simple eye of many insects; located on the vertex and next to the compound eyes; sensitive to light which helps the insect keep track of day and night.
Term
Ommatidium (-a)
Definition
a subunit that makes up the compound eye; the more subunits, the higher visual acuity.
Term
Ootheca
Definition
a case in which eggs are deposited, characteristic of Blattodea and Mantodea.Optic Nerve in the human eye, an aggregation of nerve cells which carry information from PPSC 110-People, Pests and Plagues the eye to the brain.
Term
Parasite
Definition
an organism which lives on or in a host organism, and feeds on that host, typically without killing it.
Term
Pedipalp
Definition
a sensory appendage on the head region of the Arachnida.
Term
Phloem
Definition
one of the vascular tissues of a plant, which primarily carries sugars and amino acids.
Term
Phytophagous
Definition
feeding on plants.
Term
Pigment Cell
Definition
in the insect eye, the cells which surround each ommatidium and protect it from scattered light.
Term
Predator
Definition
an organism which attacks, kills and devours its prey.
Term
Proboscis
Definition
see rostrum.
Term
Prolegs
Definition
in Lepidoptera, outcroppings of the exoskeleton along the abdomen that help the caterpillar grasp onto plant surfaces. Not true legs.
Term
Pronation
Definition
movement toward the midline of the body.
Term
Proteolytic
Definition
the process of breaking down proteins into amino acids.
Term
Proventriculus
Definition
a musculated part of the digestive system which is responsible for chewing and grinding food.
Term
Pupa
Definition
the transformation stage of the holometabolous orders, in between larva and adult.
Term
Pupil
Definition
in the human eye, the aperture that regulates the amount of light by opening and closing.
Term
Reason for Success
Definition
the basis for how well an organismal group is performing on Earth.
Term
Rectum
Definition
posterior part of the excretory system, which eliminates waste from the insect's body.
Term
Retina
Definition
in the human eye, the membrane at the back of the eye imbedded with light sensitive cells.
Term
Retinula cell
Definition
in the insect, the light receptive cell within an ommatidium.
Term
Rostrum
Definition
the snout-like arrangement of the mouthparts in some insects such as the Hemiptera or mosquitoes. See proboscis.
Term
Salivary Channel
Definition
a groove formed by the mandibles and maxillae through which saliva is injected into the host.
Term
Salivary Glands
Definition
in insects or humans, organs that secret initial digestive enzymes.
Term
Scientific Binomen
Definition
the two part Latin name of a species.
Term
Sclerotized
Definition
hardened.
Term
Semi-social
Definition
In some Hymenoptera, a life cycle in which the mated queen is the only member of the colony which overwinters.
Term
Sensilla
Definition
(Sensory Appendage)- a sense organ which consists of cuticle.
Term
Siphoning
Definition
referring to the lepidopteran mouthparts, consisting of paired coiled tubes which are inserted into flowers to feed on nectar.
Term
Solitary
Definition
living alone. Solitary organisms meet with members of their own species solely for purposes of mating.
Term
Species
Definition
groups of organisms that are reproductively isolated from other such groups. Species is singular and plural, and "spp." is the abbreviation for species plural.
Term
Spinnerets
Definition
an appendage on the poserior end of spiders, from which silk is spun. Spiders have from four to eight.
Term
Spiracle
Definition
an opening in the insect's integument that allows for gas exchange between the insect’s body and its surrounding environment.
Term
Spirochete
Definition
a single celled microorganism which has properties of both bacteria and viruses.
Term
Stridulate
Definition
the process of making a noise by rubbing two rough surfaces together. Many Orthoptera stridulate by rubbing two legs or a leg and a wing together.
Term
Supination
Definition
Movement toward the outside of the body.
Term
Stylets
Definition
the needle-like modifications of the mandibles and maxillae, used for piercing and sucking in insects such as the Hemiptera and mosquitoes.
Term
Symbiotic
Definition
living together." A symbiotic relationship involves two species, which may be mutually beneficial, positive to one and negative to the other, or positive to one and neutral to the other.
Term
Synapse
Definition
the gap between two nerve cells where there is an exchange of neurotransmitters.
Term
Systematics
Definition
the study of the classification of organisms and also their historical relationships.
Term
Taxon (plural=Taxa)
Definition
a category of classification (kingdom, phylum, class, order, family, genus, species).
Term
Taxonomy
Definition
the science of naming organisms.
Term
Trachea
Definition
a tube lined with integument that carries air within the insects' body.
Term
Tracheole
Definition
a very small trachea
Term
Tympanum
Definition
a type of mechanoreceptor that responds to sound waves, in PPSC 110-People, Pests and Plagues the form of a membrane that is stretched like the top of a drum.
Term
Vector
Definition
an organism which has the potential to transfer an infectious agent into another organism.
Term
Vestigial
Definition
the remnant of what once was; the vestige of an appendange.
Term
Wing Pads
Definition
the developing wings of insect nymphs.
Term
Worker
Definition
a female honeybee whose reproductive organs are undeveloped.
Term
Optic Nerve
Definition
in the human eye, an aggregation of nerve cells which carry information from the eye to the brain.
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