Vocab. #1
What is an invertebrate?
a animal with no backbone
What are spicules?
a. an animal that has no backbone
b. water animals that have a central opening for taking in food
c. a type of sea or land animal that has a soft body covered by a hard shell
d. a needlelike spine made of hard minerals such as calcium or silicon
d. a needlelike spine made of hard minerals such as calcium or silicon
Which is NOT true of sponges?
a. people used to think sponges were plants
b. they have no head, eyes, ears, arms, or legs
c. they typically spend their lives attached to the ocean floor
d. they have a heart, brain, and a mouth
d. they have a heart, brain, and a mouth
Which of the following invertebrates may have wings?
a. sponges
b. cnidarians
c. arthropods
d. echinoderms
c. arthropods
What is metamorphosis?
a. the hind portion of the body behind the thorax in an invertebrate or arthropod
b. the middle section of an arthropod's body
c. the process in which an organism changes form during different stages of its life cycle
d. a strong, rigid layer that covers and protects the body of some invertebrate animals, such as arthropods
c. the process in which an organism changes form during different stages of its life cycle
What is a sponge?
a. a simple multicellular invertebrate that lives attached to one place and filters food from water
b. a long, thin animal with no bones and no legs that lives in soil
c. a member of a group of invertebrate animals that have a body divided into parts, with legs that can bend in the middle and an external skeleton
d. an active early form of a developing organism that is very different from its adult form
a. a simple multicellular invertebrate that lives attached to one place and filters food from water
What is a cnidarian?
a. the sharp needle-shaped part of an insect's or animal's body, with which it stings you
b. a part of something that is different from the whole in some way
c. an invertebrate animal such as a jellyfish that has a body with radial symmetry, tentacles with stinging cells, and a central internal cavity
d. relating to the movement of blood around your body
c. an invertebrate animal such as a jellyfish that has a body with radial symmetry, tentacles with stinging cells, and a central internal cavity
What body part helps a mollusk move?
a. a muscular foot
b. tentacles
c. wings
d. a central opening
a. a muscular foot
Where are all cnidarians found?
a. in water
b. on land
c. only in the air
d. only in forests
a. in water
Which adaptation gives arthropods the ability to live in many different environments?
a. the joints along the different segments
b. the exoskeleton, which completely covers the body
c. the three segmented sections
d. the many pairs of legs
b. the exoskeleton, which completely covers the body
What is sessile?
a. a needlelike spine made of hard minerals such as calcium or silicon
b. a type of sea or land animal that has a soft body covered by a hard shell
c. the quality of being attached to one spot
d. the row of connected bones that go down the middle of your back
c. the quality of being attached to one spot
What does excreted mean?
a. relating to the movement of blood around your body
b. relating to or affecting two equal sides
c. to make a hole or passage in the ground
d. to get rid of waste material from your body through your bowels. or your skin
d. to get rid of waste material from your body through your bowels. or your skin
What do both worms and cnidarians have?
a. a circulatory system
b. a simple muscle system
c. bilateral symmetry
d. radial symmetry
b. a simple muscle system
What is one characteristic that is shared by all mollusks?
a. all mollusks have a soft body
b. all mollusks have an outer shell
c. all mollusks have gills to take in oxygen
d. all mollusks live in aquatic environments
a. all mollusks have a soft body
What are crustaceans?
a. an invertebrate with a segmented body, jointed legs, and an external skeleton
b. a small arthropod, such as a spider or tick, that has two body segments and eight legs
c. a small arthropod with six legs, three body segments, and usually two to four wings
d. an arthropod, such as a crab or shrimp, that has a hard outer shell, several pairs of legs, and that usually lives in water
d. an arthropod, such as a crab or shrimp, that has a hard outer shell, several pairs of legs, and that usually lives in water
What is a mollusk?
a. an active early form of a developing organism that is very different from its adult form
b. a needlelike spine made of hard minerals such as calcium or silicon
c. a type of sea or land animal that has a soft body covered by a hard shell
d. a simple multicellular invertebrate that lives attached to one place and filters food from water
c. a type of sea or land animal that has a soft body covered by a hard shell
What is a gastropod?
a. a mollusk, such as an oyster or clam, that has a hard shell that is made up of two matching halves
b. a mollusk, such as a snail or slug, that generally has a spiral-shaped shell
c. a marine animal, such as a sand dollar or sea urchin, that has a symmetrical shape and no backbone
d. a squid, cuttlefish, or other marine mollusk with tentacles
b. a mollusk, such as a snail or slug, that generally has a spiral-shaped shell
What are bivalves?
a. a mollusk, such as a snail or slug, that generally has a spiral-shaped shell
b. a squid, cuttlefish, or other marine mollusk with tentacles
c. a mollusk, such as an oyster or clam, that has a hard shell that is made up of two matching halves
d. a marine animal, such as a sand dollar or sea urchin, that has a symmetrical shape and no backbone
c. a mollusk, such as an oyster or clam, that has a hard shell that is made up of two matching halves
Which is NOT a mollusk?
a. bivalves
b. echinoderms
c. cephalopods
d. gastropods
b. echinoderms
Which is true of both spiders and centipedes?
a. both have four pairs of legs
b. both have two body segments
c. both are predators
d. both produce silk to make webs for capturing food
c. both are predators
What is an Echinoderm?
a. the row of connected bones that go down the middle of your back
b. water animals that have a central opening for taking in food
c. a long, thin animal with no bones and no legs that lives in soil
d. a simple multicellular invertebrate that loves attached to one place and filters food from water
b. water animals that have a central opening for taking in food
What is a cephalopod?
a. a squid, cuttlefish, or other marine mollusk with tentacles
b. a marine animal, such as a sand dollar or sea urchin, that has a symmetrical shape and no backbone
c. a mollusk, such as a snail or slug, that generally has a spiral-shaped shell
D. a mollusk, such as an oyster or clam, that has a hard shell that is made up of two matching halves
a. a squid, cuttlefish, or other marine mollusk with tentacles
Which is NOT true of cephalopods?
a. they live in freshwater environments
b. they have the most well-developed body systems of all mollusks
c. they have a brain and well-developed nerves
d. only one type of cephalopod has a shell
a. they live in freshwater environments
What is an arthropod?
a. a segmented invertebrate with a hard outer skeleton
b. an invertebrate that can fly
c. a segmented invertebrate that undergoes metamorphosis
d. an invertebrate with a hard outer shell that lives underwater
a. a segmented invertebrate with a hard outer skeleton
What is an arachnid?
a. an arthropod, such as a crab or shrimp, that has a hard outer shell, several pairs of legs, and that usually lives in water
b. a small arthropod, such as a spider, or tick, that has two body segments and wight legs
c. an invertebrate with a segmented body, jointed legs, and an external skeleton
d. a small arthropod with six legs, three segments, and usually two to four wings
b. a small arthropod, such as a spider, or tick, that has two body segments and wight legs