a. an endoskeleton.
b. an exoskeleton.
c. armor.
d. a mantle.
100
Which of the following is a characteristic of millipedes?
a. They have one pair of legs on each segment.
b. They have tiny stingers to stun their prey.
c. They have two pairs of legs on each segment.
d. They inject venom into their prey.
100
The bodies of all spiders have
a. two body sections.
b. two antennae.
c. two wings.
d. six swimmerets.
100
Which of these is NOT a stage in complete metamorphosis?
a. egg
b. larva
c. pupa
d. nymph
100
Which of the following is a characteristic of echinoderms?
a. an exoskeleton
b. three body sections
c. radial symmetry
d. a segmented body
200
Which characteristic is NOT common to all arthropods?
a. a segmented body
b. an external skeleton
c. jointed appendages
d. a backbone
200
The kind of arthropod known as a(an) ____________________ has more legs than any other kind of arthropod.
a. arachnid
b. centipede
c. millipede
d. crustacean
200
Which of the following is a characteristic of insects?
a. one pair of antennae
b. four legs
c. three pairs of wings
d. two body sections
200
Molting occurs during the gradual metamorphosis of an insect whenever
a. the nymph needs food.
b. an egg hatches.
c. its full-sized wings harden.
d. the nymph outgrows its exoskeleton.
200
How does an echinoderm use its water vascular system?
a. to defend itself from predators
b. to reproduce
c. to sense when food is near
d. to capture food
300
Which arthropods have no antennae?
a. crustaceans
b. arachnids
c. insects
d. centipedes
300
In some arthropods, several body ____________________ have become joined into distinct sections.
a. organs
b. segments
c. nerves
d. none of the above
300
Insect larvae are specialized for
a. reproducing.
b. breathing.
c. eating and growing.
d. surviving in water.
300
An insect that looks like a small adult when it hatches goes through __________ metamorphosis.
a. complete
b. synchronized
c. total
d. gradual
300
An echinoderm with long slender arms and flexible joints is a
a. sea star.
b. brittle star.
c. sea urchin.
d. sea cucumber.
400
Which of these is NOT an arthropod?
a. centipede
b. grasshopper
c. snail
d. lobster
400
Which of these is NOT an insect?
a. bee
b. beetle
c. mite
d. grasshopper
400
Spiders, mites, and ticks belong to the group of arthropods known as ____________________.
a. insects
b. arachnids
c. diplodocus
d. both a and b
400
During complete metamorphosis, a larva becomes a(an) ____________________ before it becomes an adult.
a. nymph
b. teenager
c. pupa
d. crustacean
400
Sea urchins move by using their
a. tentacles.
b. arms.
c. spines.
d. tube feet.
500
Many arthropods have appendages called ____________________ that help them sense their environment
a. feelers
b. antennae
c. legs
d. nerves
500
Where do most crustaceans live?
a. in water
b. on mountains
c. in the desert
d. underground
500
An animal with three body segments, six legs, antennae, and wings would belong in the group of arthropods called _____________________.
a. insects
b. arachnids
c. diplodocus
d. both a and b
500
Butterflies and beetles develop from egg to adult in the type of metamorphosis known as ____________________ metamorphosis.
a. complete
b. synchronized
c. total
d. gradual
500
An echinoderm that uses tentacles to sweep food toward its mouth is a(an) _____________.
a. sea urchin
b. sea star
c. sea cucumber
d. brittle star