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PPSE FINAL
Terms Part 1
50
Other
Undergraduate 1
03/13/2011

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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
Adaptation
Definition
the process that promotes individual survival and reproduction in an environment.
Term
Adaptive radiation
Definition
the speciation resulting from a founder population and a lack of competition for resources from other organisms.
Term
Adhesion
Definition
the force attracting unlike particles or molecules.
Term
Aedeagus
Definition
the insect male's reproductive organ, inserted into the female's bursa during copulation.
Term
Allele
Definition
a form of a gene.
Term
Amber
Definition
fossilized tree resin.
Term
Ametabolism (ametabolous development)
Definition
metamorphosis in which the change from immature to adult is size and sexual maturation.
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 or warning.
Term
Araneae
Definition
An order of the Class Arachnida, comprising the spiders.
Term
Asexual reproduction
Definition
see parthenogenesis.
Term
Autotroph
Definition
an organism that is able to produce its own food.
Term
Axon
Definition
the long, unbranched portion of a nerve cell, along which the action potential is generated.
Term
B.t.
Definition
abbreviation for Bacillus thurengiensis, a bacterium which produces a protein toxic to immature Lepidoptera, Coleoptera or Diptera when ingested.
Term
Ballooning
Definition
With 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
Biogeography
Definition
the study of the distribution of organisms around the world.
Term
Biological control
Definition
the action of natural enemies to lower a population of insects or mites.
Term
Biomass
Definition
the matter in living organisms, resulting from the conversion of solar energy.
Term
Biome
Definition
the dominant vegetation in a region.
Term
Biparental reproduction
Definition
reproduction which necessitates two parents, one producing sperm, one the egg
Term
Bivoltine
Definition
having two generations per year.
Term
Broad spectrum
Definition
referring to an insecticide which kills a wide range of insects.
Term
Brood
Definition
see generation.
Term
Bubo
Definition
a swelling of a lymph node.
Term
Bursa
Definition
the copulatory sack of female insects, into which the aedeagus is inserted during copulation.
Term
Butterfly
Definition
a member of the Lepidoptera which is diurnal, usually colorful, and whose antennal tips are swollen.
Term
Carbon
Definition
an element with six protons and six neutrons.
Term
Carnivore
Definition
an organism that eats other animals.
Term
Carrion
Definition
a dead animal.
Term
Caterpillar
Definition
an immature Lepidoptera.
Term
Central nervous system
Definition
in humans, the brain and spinal cord; in insects, the ganglia in the head, thorax and abdomen.
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
Chlorotic
Definition
a yellowing of plant tissue.
Term
Chorion
Definition
the outer layer of the insect egg.
Term
Chromosome
Definition
a molecular unit comprised of DNA.
Term
Chrysalis
Definition
in some lepidopteran species, the pupa that lacks the silken cocoon.
Term
Cocoon
Definition
the silken covering over the pupa.
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