insects
What is an animal without a backbone?
A. vertebrate
B. invertebrate
C. mammal
D. reptile
B. invertebrate
Which animal group has a soft body and often a shell?
A. arthropod
B. mollusk
C. cnidarian
D. sponge
B. mollusk
Which animal has a spiny skin?
A. echinoderm
B. mollusk
C. sponge
D. fish
A. echinoderm
Which animal has jointed legs and an exoskeleton?
A. fish
B. mammal
C. arthropod
D. bird
C. arthropod
Which animal is the simplest kind of invertebrate?
A. cnidarian
B. sponge
C. echinoderm
D. insect
B. sponge
Which animal has stinging cells on its tentacles?
A. mollusk
B. arthropod
C. cnidarian
D. reptile
C. cnidarian
What is an internal supporting structure called?
A. exoskeleton
B. shell
C. endoskeleton
D. skin
C. endoskeleton
Which animal has a backbone?
A. insect
B. worm
C. bird
D. jellyfish
C. bird
Which animal is warm-blooded?
A. reptile
B. fish
C. bird
D. amphibian
C. bird
Which animal lives part in water and part on land?
A. fish
B. bird
C. amphibian
D. reptile
C. amphibian
Which group is the largest group of arthropods?
A. spiders
B. insects
C. crabs
D. worms
B. insects
Which system helps you breathe?
A. digestive system
B. respiratory system
C. muscular system
D. skeletal system
B. respiratory system
Which system carries blood around the body?
A. circulatory system
B. digestive system
C. respiratory system
D. skeletal system
A. circulatory system
Which system controls the body using signals?
A. nervous system
B. muscular system
C. digestive system
D. excretory system
A. nervous system
Which example shows a mammal?
A. lays eggs and has scales
B. has feathers and wings
C. produces milk for its young
D. lives only in water
C. produces milk for its young
Which animal would most likely breathe through lungs only?
A. fish
B. bird
C. tadpole
D. worm
B. bird
A student runs very fast. Which system is working the MOST?
A. digestive system
B. muscular system
C. excretory system
D. skeletal system
B. muscular system
If your body needs to send signals quickly (like touching something hot), which system helps?
A. digestive
B. nervous
C. circulatory
D. skeletal
B. nervous
Which example shows the respiratory system working?
A. food being broken down
B. muscles moving your arms
C. lungs taking in oxygen
D. bones supporting your body
C. lungs taking in oxygen
Which animal fits ALL these traits:
no backbone
soft body
may have a shell
A. crab
B. snail
C. fish
D. bird
B. snail
Why do arthropods need an exoskeleton?
A. to help them fly
B. to protect and support their bodies
C. to breathe underwater
D. to make food
B. to protect and support their bodies
Which fish has a skeleton made of hard bone?
A. salmon
B. shark
C. lamprey
D. ray
A. salmon
Which of the following is an example of a jawless fish?
A. tuna
B. shark
C. lamprey
D. goldfish
C. lamprey
Which example BEST shows a cartilaginous fish?
A. trout
B. shark
C. eel
D. frog
B. shark
A scientist finds a fish with no bones. What can they conclude?
A. it is a bony fish
B. it is a cartilaginous fish
C. it is a mammal
D. it is an amphibian
B. it is a cartilaginous fish