Insects & Arachnids
How many antennae do all insects have?
2 antennae
How many pairs of legs do millipedes have?
2 per segment
What are 4 characteristics of insects?
3 body sections, 6 legs, 1 pair of antennae, 1-2 pairs of wings
How many pairs of legs do arachnids include?
4
How many legs does an insect have?
6
How many legs do arachnids have?
8
What are 4 characteristics of arachnids?
8 jointed appendages, exoskeleton, segmented body with 2 parts, developed head
All arachnids have...
8 legs
Which creatures below are insects?
Bees, butterflies, grasshoppers, ladybugs
How are centipedes and millipedes different?
Centipedes have 1 pair of walking legs per segment, and are carnivores. Millipedes have 2 pairs of walking legs per segment, and are herbivores.
How are an insect's compound eyes different from its simple eyes?
Compound eyes have many lenses and are especially keep at sensing movement. Simple eyes have only one lens and are used for seeing light and dark. Some can't form images.
What are three main body parts of an insect?
Head, thorax, abdomen
What is one reason why spiders are not classified as insects?
Insects have 6 legs but spiders have 8
Where are arachnids found?
Land, Freshwater, Desert
Name three arachnids
Spider, tick, mite
How do spiders obtain and digest their food?
The spider injects venom into the prey through its hallow fangs. The venom turns the prey to mush, and the spider using its fangs like drinking straws to suck up the mush.
What is one way insects are helpful?
They eat other insects
What is one way insects are harmful?
They spread diseases.
What is the overall impact of insects on humans?
While insects can be harmful to humans, they're mostly beneficial or harmless.
A characteristic of an insect that helps it survive
adaptation
What part of an insect's body help it smell and feel?
antennae
Name a type of arthropod without antennae.
arachnid
What is a spider?
arachnid
Which organisms have two body segments and four pair of jointed appendages?
arachnids
What Greek word means "jointed foot"?
arthropod
Which phylum contains the largest number of animals?
arthropod
What do most insects use sound for?
attracting mates
What function does sound serve for many insects?
attracting mates
Although some insects are harmful, most are ___________.
beneficial
What are 3 characteristics of arthropods?
bilateral symmetry, open circulation, molting of exoskeleton
Spraying pesticides on a lawn is not __________ control.
biological
The ability of an insect to produce light is called _______________.
bioluminesence
Almost all arachnids are
carnivores
Arachnids have a...(a head and thorax fused together)
cephalothorax
What type of metamorphosis does a butterfly go through?
complete metamorphosis
What type of insect eye has multiple lenses and senses movement?
compound eye
What type of bee(s) is/are male?
drone
What are insect larvae specialized for?
eating and growing
How do insects help farm crops?
eating harmful insects, pollinating
An infant arachnid will hatch from
egg
List the stages of complete metamorphosis.
egg, larva, pupa, adult
Name the four stages of complete metamorphosis.
egg, larva, pupa, adult
Name the three stages of incomplete metamorphosis.
egg, nymph, adult
What kind of skeleton do arthropods have?
exoskeleton
All arachnids are spiders. (true or false)
false
True or False? A spider is an insect.
false
True or False? All insects look exactly the same.
false
True or False? Insects are the smallest group of animals on earth.
false
What type of bee can sting?
honey bee
Which insect produces honey that we can eat?
honeybee
What is the process of an insect changing into it's adult form?
metamorphosis
What does a nymph do when it outgrows its exoskeleton?
molting
Can all insects fly?
no
An insect form that looks like a tiny adult when it hatches is called a _____.
nymph
What type of circulatory system do insects have?
open circulatory system
What do centipedes eat?
other arthropods
What type of coloring helps insects hide from predators?
protective coloring/camouflage
What are 6 ways in which insects protect themselves and the insects that use these methods?
protective exoskeleton (all insects), running or flying away (fly), smelling or tasting bad (stinkbugs), stinging (bees, wasps), using camouflage (grasshoppers, caterpillars, walking sticks), resembling larger animals (moth)
What are 3 different types of camouflage? Explain each type.
protective form - having a structure similar to habitat, protective coloration - matching the color of the habitat, warning coloration - colors (usually red, orange, yellow) that warn predators that the insect is poisonous
What type of bee lays eggs?
queen bee
Spiders use book lungs to perform
respiration
Spider webs are made of...
silk
Spiders can spin webs by using a special...
silk gland
What type of insects cannot survive alone?
social
Name four arachnids.
spider, tic, scorpion, chigger
What carries oxygen in an animal's circulatory system?
spiracles
What does a grasshopper use to get oxygen?
spiracles
_______________ eat and damage wood products.
termites
What segment of an insect has the legs and wings?
thorax
Name a parasitic arachnid.
tic
Arthropods can kill prey by using it's
venomous fangs
What type of bee gathers food?
worker bee
What type of bee(s) is/are female?
worker bee, queen bee
