Abeka 6th Grade Science Test 3

arthropod

An invertebrate that has an external skeleton, a segmented body, and jointed appendages

chitin

The tough material from which the external skeleton is made

metamorphosis

Most insects undergo a transformation in appearance known as...

molting

The process in which an insect sheds its external skeleton

nocturnal

An animal that is active at night

setae

The tiny hairs on a spider's body that are very sensitive to vibrations

entomologists

Scientist who study insects

classification

The process of arranging animals or other things into groups according to their similarities

90%

About how many arthropods belong to the class of insects?

3

How many distant body regions do all insects have?

spinnerets

The tubelike structures with which spiders squirt out long, thin streams of liquid silk

antennae

Help an insect to feel, hear, and taste

3

Insects have how many pairs of jointed legs?

pupa

An insect resting in a chrysalis or cocoon is known as....

nymph

The stages of incomplete metamorphosis are egg, ___________, and adult

species

The scientific name of an animal uses both the genus and the _______ names.

harvestman or daddy longlegs

a useful arachnid with one body section; eight long, scrawny legs, and an appetite for plant lice and other insect pests

mite

a parasite that may cause mange in animals or scabies in humans

scorpion

an arachnid that has a long tail with a poisonous, needlelike point on the end

beetle (Coleoptera)

true bug (Hemiptera)

social insects (Hymenoptera)

butterfly (Lepidoptera)

moth (Lepidoptera)

dragonfly (Odonata)

fly (Diptera)

8

Spiders have how many legs?

cephalothorax

Spiders have two distinct body regions, and abdomen and a ___________________.

book lungs

Spiders breathe by means of....

ballooning

Many young spiders leave the nest by sailing away on silk strands, a practice called____________

platform spider

The spider that weaves a sheet web on a small portion of the ground

ogre-faced spider

The spider that makes a net small enough to hold between its legs

trap-door spider

The spider that sometimes digs a hole in the ground, lines it with silk, and builds a silk trap door for it

water spider

The spider that spends its entire life underwater

tarantula

Spider that is the largest in the world

brown recluse

The very poisonous spider with a dark violin-shaped mark on its body

Greek and Latin

What languages are used for scientific names of animal?

Latin and Greek terms were used by scientists so that scientists of all countries would understand what animal was being referred to.

Why do scientist use Latin and Greek terms to identify animals?

When animals were classified, educated people in the Western world were familiar with Latin and Greek

Why do scientist use Latin and Greek terms to identify animals?