True/False
About 90% of all arthropods are arachnids.
False - they are insects
When an insect makes a complete change in appearance (egg, larvae, pupa, adult) is called this.
Complete metamorphosis
an insect in a chrysalis or cocoon is called
pupa
Spiders have _______ legs.
8
Invertebrates that have external skeletons, segmented bodies and jointed appendages are called __________ .
arthropods
All insects have only 3 distinct body parts
True
The tiny hairs on a spider that are very sensitive to vibrations
setae
what are the stages of incomplete metamorphosis
egg, nymph, adult
Spiders have two body sections called __________ and _________.
cephalothorax and abdomen
The tough material that makes up the external skeleton is called __________ .
Chitin
Spiders squirt out liquid silk through long tubes called squirteretes.
False - spinneretss
An insect that starts as an egg and changes into a nymph (small version of the adult) has gone through what process?
incomplete metamorphosis
an insect that lives on a host animal using their body for food and shelter
parasite
Spiders breathe by means of their _______ .
book lungs
When insects go through a change in appearance, it is called _________.
metamorphosis
False - antennae
Scientist that studies insects.
Entomologist
an arachnid with a long tail and a poisonous, needlelike point on the end
scorpion
When spiders leave the nest by sailing away on silk strands, it is called ________ .
ballooning
The process in which an insect sheds its external skeleton is called ______.
molting
All insects have 4 pairs of jointed legs.
False - 3 pair
the process of arranging animals or other things into groups based on similarities
classification
scientist use latin or scientific names for which 2 classification levels.
genus and species
A spider that weaves a sheet web on the ground is the ________ .
platform spider
nocturnal