Bugs and People Exam 1

Topics: Insect, Arthropod, Dung beetle Pages: 9 (1631 words) Published: December 4, 2012
Study Questions for Exam 1
Chapter 1:

What do taxonomists do?
Classify, name, and identify organisms.

What is classification?
Arrangement of things into groups sharing certain, specified similarities.

What is the Historia Animalium?
Attempt by Aristotle to classify insects.

Original definition of a bug:
refers to a ghost or hobgoblin (something unpleasant or difficult to see).

What did Bartholomaeus Anglicus do of importance?
Compilied an entire "Book of the Universe."

Who was Linnaeus and what did he do of importance?
Used a binomial naming system in his book, Systema Naturae. Universally adopted.

What is the binomial system of nomenclature? What do taxonomists do? Contains name of species of the genus, (in capitals) and the species name (not capitalized).

What types of organisms are in the Myriapoda?
Class in phylum Arthropoda, contain millipedes and centipedes.

What is the dominant life form on Earth?
The class Insecta.

What does the word Siphonaptera literally mean?
"Wingless pipe."

What type insect is in it?

What do millipedes ooze when they are threatened?
Can ooze noxious substances or hydrogen cyanide/quaaludes.

What is the primary way in which Mandibulates and Chelicerates differ? Sub-phylum Chelicerates: pincers. Sub-phylum Mandibulates: mandibles.

Chapter 2:
Most of the problems insects faced can be traced back to what? Their surface area/volume ratio.

What is an exoskeleton?
An external skeleton.

What is a cuticle?
outside covering of an insect.

Having an external skeleton.
What is the biggest drawback of having an exoskeleton?
Exoskeletons must be shed for the organism to increase in size.

What does ekdysis mean?
Means "getting out" or shedding an exoskeleton.

What is a spiracle?
System of branched tubes that connect through a series of small holes.

Where did insect wings come from?
Began as airfoils, simple extensions of the cuticle from the thorax.

What is metamorphosis?
When an insect changes form, either incomplete or complete.

How can some insects live on the surface of water?
Small gravitational force acting on it, and surface adhesion is sufficient to hold it up.

What is the relationship between an animal’s size and its control over its environment? As an animal gets smaller, control over its environment decreases, until they get so small, control of their ecosystem increases again.

What is apolysis?
Step in molting: separation of old cuticle from newly-activated epidermis.

What is hydroprene and what role does it play in roaches?
A juvenile hormone mimic that prevents roaches from reproducing.

What is an instar?
Developmental stage.

What is diapause and why does it occur?
Physiological state marked by paused development, buildup of fat reserves, reduction in body water, and increased tolerance to harsh conditions

What is a zygote?
Cell resulting from fusion of 2 gametes, and receives genetic info from 2 parents.

What do accessory glands do?
Females: provide materials that attach egg to surface (colleterial).

What is sexual dimorphism?
Differing in structure depending on sex.

What is thelytoky?
Form of parthenogenetic reproduction. Diploid females produce diploid females without mating.

What is the “lock and key” hypothesis concerning insect genetalia? Only members of the same species of the female and opposite sex will be able to deliver sperm.

Who was Darwin and what did he do of importance?
Formulated a theory that emphasized variation, rather than "type" or "essence" or organisms....
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