Animals
What system helps your body move?
A. Digestive system
B. Muscular system
C. Respiratory system
D. Nervous system
B. Muscular system
What role does the nervous system play?
A. Carrying oxygen throughout the body
B. Digesting nutrients
C. Processing information and coordinating responses
D. Producing hormones only
C. Processing information and coordinating responses
Why do your muscles and bones need to work together when you lift a backpack?
A. Muscles make the backpack lighter
B. Bones pull the muscles to move
C. Muscles tighten and pull on bones to lift the backpack
D. Bones store energy to lift objects
C. Muscles contract and pull on bones to lift the backpack
How does the excretory system help keep your body healthy?
A. By making you taller
B. By removing harmful wastes
C. By helping you run faster
D. By making food
B. By removing harmful wastes
What's an offspring that is an exact copy of its parent?
clone
What is fertilization?
A. When egg and sperm join
B. When animals eat
C. When animals sleep
D. When animals grow
A. When egg and sperm join
what's a nervous system?
the set of organs that uses information from the senses to control all body systems
Which shows the circulatory system helping your body?
A. Blood carrying oxygen to your cells
B. Bones supporting your body
C. Skin healing a cut
D. Eyes seeing light
A. Blood carrying oxygen to your cells
What does blood carry to body cells?
A. Rocks
B. Oxygen, food, and water
C. Sand
D. Air only
B. Oxygen, food, and water
Which situation is the best example of the heart working?
A. Oxygen moving from your lungs into your blood
B. Blood being pushed through your body after running
C. Food being broken down in your stomach after eating
D. Messages being sent from your brain to your muscles
B. Blood being pushed through your body after running
How many chambers does a fish heart have?
A. One
B. Two
C. Three
D. Four
B. Two
How many chambers does a mammal’s heart have?
A. Two
B. Three
C. Four
D. Five
C. Four
Which organs filter waste from the blood?
A. Heart and lungs
B. Liver and kidneys
C. Eyes and ears
D. Skin and bones
B. Liver and kidneys
What makes up the circulatory system?
A. Brain, nerves, bones
B. Eyes, ears, nose
C. Lungs, skin, muscles
D. Heart, blood, blood vessels
D. Heart, blood, blood vessels
What type of metamorphosis do grasshoppers have?
A. Incomplete
B. Complete
C. No change
D. Fast change
A. Incomplete (egg->nymph->adult)
What are the stages of a frog’s life cycle?
A. Tadpole → egg → frog → adult
B. Egg → adult → tadpole → egg
C. Egg → tadpole → adult frog
D. Baby frog → child frog → adult frog
C. Egg → tadpole → adult frog
What does a fertilized egg become?
A. Bone
B. Embryo
C. Skin
D. Blood
B. Embryo
How do simple animals like cnidarians reproduce?
A. giving birth
B. laying eggs
C. Flying
D. Budding
Budding
What is regeneration?
A. a completely identical copy of parents
B. Growing from a small part into a whole animal
C. Rebuilding lost parts
D. Creating a duplicate organism
B. Growing from a small part into a whole animal
Which is an example of regeneration?
A. A fish breathing underwater
B. A cat chasing a mouse
C. A bird building a nest
D. A starfish growing back a lost arm
D. A starfish growing back a lost arm
What happens during incomplete metamorphosis?
A. The animal changes completely before becoming an adult
B. The young stage looks similar to the adult stage
C. The animal stops growing after it hatches
D. The adult and young stages look nothing alike
B. The young stage looks similar to the adult stage
What does the nervous system include?
A. Your brain thinking, your spinal cord sending messages, and your eyes reacting to light
B. Your legs running, your arms lifting weights, and your stomach digesting food
C. Your heart pumping blood, your veins carrying oxygen, and your blood cells working
D. Your skin feeling heat, your lungs taking in air, and your stomach breaking down foo
A. Your brain thinking, your spinal cord sending messages, and your eyes reacting to light
Which group has a heart with three chambers?
A. Animals that lay eggs in water and can live on land as adults
B. Animals that have a four-chambered heart and constant body temperature
C. Animals that have a two-chambered heart and live only in water
D. Animals that have a four-chambered heart and lay hard-shelled eggs
A. Animals that lay eggs in water and can live on land as adults
Why do animals need the circulatory system?
A. To turn food directly into energy inside the stomach
B. To carry oxygen from the lungs to muscles during running and exercise
C. To send signals from the brain to the skin instantly
D. To support movement by attaching muscles to bones
B. To carry oxygen from the lungs to muscles during running and exercise
Which of these is a waste product from cells?
A. Oxygen
B. Food
C. Carbon dioxide
D. Water only
C. Carbon dioxide