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Types of Invertebrates

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  • How many legs to insects have?
    20
    6
    8
    3
  • Which part of the insects body holds the eyes, mouth parts, and antennae?
    the abdomen
    the head
    the legs
    the thorax
  • Why can worms keep living even if one segment is hurt?
    Because they have no vertebrate.
    Because they have an exoskeleton.
    Because each segment has copies of important organs.
    None of the above
  • Spiders and scorpions are examples of __________.
    arachnid
    insects
  • Insect organs are found in the:
    head
    thorax
    abdomen
    antennae
  • A grasshopper has three body parts and no backbone. It is:
    an insect
    an abdomen
    a vertebrate
    an arachnid
  • Insects go through a process called metamorphosis. What is metamorphosis?
    This special process is a change in body structure.
    The special process of growing wings.
    All of the above
    The process of eating.
  • Some mollusk species live in water, while others live on land.
    True
    False
  • Both insects and arachnids have an exoskeleton.
    True
    False
  • How many body parts do arachnids usually have?
    2 body parts and 6 legs
    2 body parts and 8 legs
    3 body parts and 8 legs
    3 body parts and 6 legs
  • A ladybug is an insect because it has __________ .
    two body parts
    two abdomens
    eight legs
    six legs
  • Worms have no protective structure.
    False
    True
  • Animals that do not have vertebrae are called __________ .
    invertebrates.
  • Do arachnids have wings?
    Yes
    No
  • Most mollusk cannot grow hard shell.
    False
    True
  • Which of the following statement is incorrect about worms and mollusks?
    All worms and mollusks rely on other organisms for food.
    Worms and mollusks are invertebrates.
    All worms and mollusks are segmented.
    Worms and mollusks both have soft bodies.
  • Which of the following is a mollusk?
    all of the above
    squid
    snail
    oyster
  • Krissy finds a bug in her backyard. It has two body parts and eight legs. Krissy has found:
    an insect
    a vertebrate
    an arachnid
    a grasshopper
  • What is the purpose of the exoskeleton?
    It gives the animal shape.
    All of the above
    It protects the insect's internal organs.
  • The thorax is located between ________________.
    the antennae and the head
    the antennae and abdomen
    the head and the abdomen
  • Animals that do not have a backbone are called __________ .
    invertebrates
  • Which two body parts are joined in an arachnid?
    the thorax and legs
    the head and thorax
    the head and antennae
    the head and legs
  • If part of a worm is hurt it may keep living. This is because the worm's body:
    has a hard shell
    has an internal skeleton
    all of the above
    is made of segments
  • Worms and mollusks are similar because they both have:
    backbones
    lungs
    soft bodies
    hard shells
  • Earthworms belong to a group on invertebrate called?
    mollusk
    annelids
    soft bodies
    worms
  • Which of the following statements is true?
    Clams and oysters live on land.
    Not all mollusks have shells.
    Octopi are not very smart.
    Worms have hard outer shells.
  • How are insects and arachnids similar?
    They both are unicellular.
    They both are found only in water.
    They both need the Sun for photosynthesis.
    They both have exoskeletons.
  • Clams and oysters use gills to breathe and cannot live on land.
    True
    False
  • Squid and octopi are examples of mollusk with _________.
    no shells
    swimming abilities
    shells
  • Legs and wings connect to the thorax.
    False
    True
  • The number of invertebrates on earth is much greater than the number of vertebrates.
    True
    False
  • Worms have bodies which are divided into _________.
    bones
    vertebrates
    segments
  • The insect group is one of the largest invertebrate groups.
    True
    False
  • Why do most mollusks grow hard shells?
    to protect themselves
    to store food
    all of the above
    to live in them
  • Which part of the insects body holds the organs?
    the thorax
    the legs
    the abdomen
    the hean
  • What are the the places worms live in?
    in water, or inside animals, and in clams
    in food, in water, or inside animals
    under the ground, in food, or inside animals
    under the ground, in water, or inside animals
  • Which mollusks live in the water?
    worms and mollusks
    clams and oysters
    insects and clams
    mollusks and sharks
  • What are the three body parts of an insect?
    the head, abdomen, and legs
    the head, legs, and antennae
    the head, legs, and wings
    the head, thorax, and abdomen
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