Can You Outsmart an Elementary School Biology Test?

Question 1

What Organ Pumps Blood Throughout the Body?

Question 1

What Gas Do We Breathe in That Keeps Us Alive?

Question 1

What Do Plants Need for Photosynthesis?

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What Body Part Helps You See?

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Which Body Part Helps You Hear?

Question 1

What Do Bees Collect From Flowers?

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Which Animal Lays Eggs?

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What Helps Your Bones Stay Strong?

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What Organ Helps You Breathe?

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Which Sense Uses Your Nose?

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What Do Tadpoles Grow Into?

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What Part of a Plant Holds It in the Ground?

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What Type of Animal Is a Lion?

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Which Part of the Body Digests Food?

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What Organ Helps Filter Waste From Your Blood?

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Which Living Thing Is a Producer in a Food Chain?

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Which Body System Controls Your Movements?

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What Does a Caterpillar Become?

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What Part of a Tree Carries Water From Roots to Leaves?

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What Do Humans Use Their Skin for?

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Which of These Animals Is Cold-Blooded?

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What Helps Your Body Fight Sickness?

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What Do Plants Release Into the Air?

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What Do Bones Connect to at Joints?

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Which Body Part Is Used for Tasting?

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What Do Animals Need to Survive?

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What Does an Omnivore Eat?

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What’s the Smallest Unit of Life?

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What Does a Bird Use to Fly?

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What Gas Do Plants Take in?

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What Organ Is Responsible for Thinking and Memory?

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Which Part of the Body Helps With Balance?

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Which of These Is a Vertebrate?

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How Do Fish Breathe Underwater?

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What Is the Function of Eyelashes?

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Which Living Thing Is a Decomposer?

Question 1

How Does a Baby Breathe Before Birth?

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Which of These Is a Reptile?

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What Does the Liver Help the Body Do?

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What Body Part Helps Birds Steer?

Question 1

What Gives Blood Its Red Color?

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Which of These Animals Undergoes Metamorphosis?

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What Does the Spine Protect?

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What Happens When You Sweat?

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Which Part of a Flower Makes Seeds?

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What Is the Job of the Large Intestine?

Question 1

What Is the First Stage of a Butterfly’s Life Cycle?

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How Do Penguins Keep Warm?

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Which Food Gives the Most Calcium?

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What Is the Job of White Blood Cells?

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Which System Includes the Bones?

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Which of These Animals Is a Herbivore?

Question 1

What Do Plants Use Their Roots for?

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Which Body System Controls Breathing?

Question 1

What Do Snakes Shed as They Grow?

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How Do Ants Communicate?

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What’s the Purpose of Feathers?

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What Causes Your Shadow to Appear?

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Which Animal Lives in a Hive and Makes Honey?

Question 1

What Is the Main Purpose of Leaves?

Question 1

Which of These Helps Keep Your Heart Healthy?

Question 1

What Is the Main Job of Red Blood Cells?

Question 1

What Is an Example of a Carnivore?

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What Happens When You Break a Bone?

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What Type of Teeth Do Herbivores Use to Chew Plants?

Question 1

Which of These Animals Is an Invertebrate?

Question 1

What Is the Job of the Stem in a Plant?

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Which of These Is a Basic Need for All Animals?

Question 1

What Does a Spider Use to Spin a Web?

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Which Sense Is Mainly Used When Reading a Book?

Question 1

Why Do Birds Migrate?

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What Is One Reason a Giraffe Has a Long Neck?

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What Part of the Body Helps You Smell?

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What’s the Function of Your Rib Cage?

Question 1

What Does a Food Web Show?

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Which of These Creatures Has Eight Legs?

Question 1

What Do Rainforests Need Most to Thrive?

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What Happens to Water in a Plant?

Question 1

What Happens When You Blink?

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What Sense Helps You Feel Heat and Texture?

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Which Animal Grows From Egg to Larva to Pupa to Adult?

Question 1

What Is Chlorophyll?

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Why Are Wetlands Important?

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Which of These Is an Example of Camouflage?

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What Body System Includes Your Brain and Nerves?

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What Type of Animal Eats Both Meat and Plants?

Question 1

Why Do Squirrels Store Nuts?

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What Is the Function of Fur on Animals?

Question 1

What Is an Ecosystem?

Question 1

What Do Frogs Use Their Long Tongues for?

1

Lungs

2

Heart

3

Liver

4

Stomach

The heart circulates oxygen-rich blood through the body, delivering nutrients and removing waste via the bloodstream.

1

Carbon dioxide

2

Nitrogen

3

Helium

4

Oxygen

Oxygen is vital for cellular respiration, a process that helps your body make energy from food.

1

Sunlight

2

Salt

3

Sand

4

Sugar

Sunlight powers photosynthesis, enabling plants to turn carbon dioxide and water into food.

1

Ears

2

Eyes

3

Nose

4

Tongue

The eyes detect light and send signals to the brain to form images of the world around you.

1

Ears

2

Eyes

3

Mouth

4

Nose

Your ears capture sound waves and send them to your brain, allowing you to understand noises and speech.

1

Bark

2

Leaves

3

Water

4

Nectar

Bees gather nectar to make honey and help pollinate plants as they travel from flower to flower.

1

Dog

2

Chicken

3

Cow

4

Horse

Chickens and most birds lay eggs to reproduce, with the embryo developing inside the egg shell.

1

Sugar

2

Caffeine

3

Calcium

4

Oxygen

Calcium is a mineral found in dairy and leafy greens that keeps your bones dense and healthy.

1

Kidneys

2

Stomach

3

Lungs

4

Heart

Lungs take in oxygen and remove carbon dioxide during the process of breathing.

1

Smell

2

Touch

3

Hearing

4

Taste

Your nose detects smells using receptors that send signals to the brain's olfactory system.

1

Lizards

2

Frogs

3

Snakes

4

Fish

Tadpoles are the larval stage of frogs and go through metamorphosis as they develop legs and lungs.

1

Stem

2

Flower

3

Leaves

4

Roots

Roots anchor the plant in the soil and absorb water and minerals needed for growth.

1

Amphibian

2

Mammal

3

Reptile

4

Bird

Lions are warm-blooded mammals that give birth to live young and nurse them with milk.

1

Lungs

2

Liver

3

Brain

4

Stomach

The stomach uses acid and enzymes to break food into nutrients the body can use.

1

Heart

2

Kidneys

3

Lungs

4

Liver

Kidneys remove toxins and waste from your blood, producing urine as part of your body’s filtration system.

1

Rabbit

2

Grass

3

Fox

4

Owl

Grass makes its own food through photosynthesis and is the base of many food chains.

1

Circulatory system

2

Respiratory system

3

Muscular system

4

Digestive system

The muscular system allows you to move your body using muscles attached to bones.

1

Ant

2

Worm

3

Bee

4

Butterfly

Caterpillars go through metamorphosis, forming a chrysalis and transforming into butterflies.

1

Bark

2

Fruit

3

Branches

4

Trunk

The trunk transports water and nutrients through xylem tissue to nourish the entire tree.

1

Seeing

2

Thinking

3

Breathing

4

Protection

Skin is the body’s largest organ and protects you from germs, injury, and harmful sun rays.

1

Elephant

2

Horse

3

Cat

4

Snake

Snakes are reptiles, meaning their body temperature changes with the environment instead of staying constant.

1

White blood cells

2

Red blood cells

3

Plasma

4

Platelets

White blood cells destroy viruses, bacteria, and other invaders that cause infections.

1

Sulfur

2

Nitrogen

3

Oxygen

4

Carbon dioxide

During photosynthesis, plants absorb carbon dioxide and release oxygen into the atmosphere.

1

Muscles

2

Lungs

3

Blood

4

Veins

Joints connect bones and allow movement with the help of muscles and ligaments.

1

Tongue

2

Ear

3

Foot

4

Nose

Your tongue has taste buds that detect sweet, sour, salty, bitter, and umami flavors.

1

Water

2

Plastic

3

Glue

4

TV

Water is essential for animals to regulate body temperature, digest food, and eliminate waste.

1

Only plants

2

Plants and animals

3

Only meat

4

Fruits only

Omnivores like humans eat both meat and plant-based foods for a balanced diet.

1

Organism

2

Tissue

3

Organ

4

Cell

Cells are the building blocks of all living things, from tiny bacteria to humans.

1

Legs

2

Wings

3

Teeth

4

Nose

Birds have strong, lightweight wings covered in feathers that allow them to fly through the air.

1

Carbon dioxide

2

Nitrogen

3

Hydrogen

4

Oxygen

Plants absorb carbon dioxide through tiny pores in their leaves and use it during photosynthesis.

1

Liver

2

Brain

3

Heart

4

Lungs

The brain controls thinking, memory, emotions, and decisions by processing signals from around the body.

1

Liver

2

Stomach

3

Nose

4

Inner ear

The inner ear contains tiny structures that sense movement and help you maintain balance and orientation.

1

Octopus

2

Jellyfish

3

Dog

4

Worm

Dogs have a backbone, which makes them vertebrates unlike jellyfish or worms.

1

Lungs

2

Gills

3

Nostrils

4

Skin

Fish use gills to extract oxygen from water and release carbon dioxide.

1

Filter air

2

Protect eyes from dust

3

Balance hearing

4

Help you smell

Eyelashes protect your eyes by catching dust and debris before it enters.

1

Mushroom

2

Cow

3

Tree

4

Ant

Mushrooms break down dead plants and animals, returning nutrients to the soil.

1

With lungs

2

Through the umbilical cord

3

Through the nose

4

By swallowing air

Oxygen is passed from the mother to the baby via the umbilical cord, not by breathing air.

1

Whale

2

Penguin

3

Turtle

4

Frog

Turtles are reptiles with dry scaly skin and lay eggs on land.

1

Pump blood

2

Store oxygen

3

Create bones

4

Filter toxins

The liver removes toxins from the blood and processes nutrients from food.

1

Eyes

2

Beaks

3

Legs

4

Wings

Birds use their wings to generate lift and steer while flying.

1

Chlorophyll

2

Plasma

3

Platelets

4

Hemoglobin

Hemoglobin in red blood cells binds with oxygen and gives blood its red color.

1

Dog

2

Elephant

3

Butterfly

4

Fish

Butterflies transform from eggs to caterpillars, then to pupae, and finally into adults.

1

Spinal cord

2

Heart

3

Stomach

4

Liver

The spine encases and protects the spinal cord, which sends messages between the brain and body.

1

Your body cools down

2

You get stronger

3

You lose oxygen

4

You absorb water

Sweating helps regulate body temperature by releasing heat as moisture evaporates from the skin.

1

Stem

2

Petal

3

Leaf

4

Ovary

The ovary in a flower contains ovules, which develop into seeds after fertilization.

1

Absorb water

2

Pump blood

3

Break down proteins

4

Store oxygen

The large intestine absorbs water from digested food and stores waste before elimination.

1

Butterfly

2

Chrysalis

3

Egg

4

Caterpillar

Butterflies begin life as tiny eggs laid on leaves by adult females.

1

Sunlight

2

Thick feathers and fat

3

Hot sand

4

Fast running

Penguins have dense feathers and a thick fat layer to insulate against extreme cold.

1

Milk

2

Bread

3

Chicken

4

Apples

Milk is rich in calcium, which is important for growing strong bones and teeth.

1

Control sugar

2

Fight infection

3

Build muscles

4

Carry oxygen

White blood cells defend your body by identifying and destroying harmful viruses and bacteria.

1

Skeletal system

2

Circulatory system

3

Respiratory system

4

Digestive system

The skeletal system includes bones and joints that provide structure and protect internal organs.

1

Cow

2

Wolf

3

Eagle

4

Shark

Cows eat only plants and grasses, making them classic examples of herbivores.

1

To photosynthesize

2

To breathe

3

To fly

4

To absorb water and nutrients

Roots anchor the plant and take in water and nutrients from the soil.

1

Nervous system

2

Digestive system

3

Respiratory system

4

Skeletal system

The respiratory system includes lungs and airways, managing the exchange of oxygen and carbon dioxide.

1

Eyes

2

Bones

3

Skin

4

Teeth

Snakes regularly shed their outer layer of skin to allow for growth and remove parasites.

1

With speech

2

With chemicals

3

With blinking

4

By changing color

Ants use pheromones—chemical signals—to communicate with each other about food or danger.

1

Flight and warmth

2

Breathing

3

Seeing

4

Swimming

Feathers help birds fly, stay dry, and keep warm by trapping heat close to their bodies.

1

Breathing air

2

Sound waves

3

Gravity pulling

4

Blocking light

Shadows are made when something blocks light from reaching the surface behind it.

1

Butterfly

2

Ant

3

Spider

4

Bee

Bees live in hives, where they store honey made from nectar collected from flowers.

1

Make food for the plant

2

Store water

3

Attract insects

4

Grow roots

Leaves perform photosynthesis, converting sunlight into energy the plant can use to grow.

1

Watching TV

2

Sleeping late

3

Eating candy

4

Exercise

Regular exercise strengthens your heart, improves circulation, and helps maintain a healthy weight.

1

Fight infections

2

Pump blood

3

Carry oxygen

4

Digest food

Red blood cells transport oxygen from the lungs to body tissues and bring carbon dioxide back to the lungs.

1

Lion

2

Horse

3

Cow

4

Sheep

Lions eat other animals for food, which classifies them as carnivores.

1

It can heal over time

2

It melts

3

It disappears

4

It gets replaced

Bones are living tissue and can repair themselves with rest, nutrients, and medical help.

1

Flat molars

2

Sharp canines

3

Small incisors

4

Pointy fangs

Herbivores use broad, flat molars to grind and break down tough plant material.

1

Cat

2

Jellyfish

3

Bird

4

Mouse

Jellyfish don’t have a backbone, making them invertebrates unlike cats or birds.

1

Digest food

2

Filter light

3

Carry water and support the plant

4

Catch insects

The stem transports nutrients and water and holds the plant upright for sunlight exposure.

1

Books

2

Music

3

Food

4

Toys

All animals need food to grow, produce energy, and stay alive.

1

Hair

2

Silk

3

Feathers

4

Bark

Spiders use special glands to produce silk, which they use to spin webs for catching prey.

1

Hearing

2

Taste

3

Sight

4

Smell

Your eyes allow you to see letters and words so you can read and understand a book.

1

To find food and better weather

2

To grow bigger

3

To avoid other birds

4

To sleep more

Birds migrate to warmer places with more food when temperatures drop in their usual homes.

1

To hear better

2

To dig holes

3

To walk faster

4

To reach high leaves

Giraffes use their long necks to eat leaves from tall trees other animals can’t reach.

1

Nose

2

Eyes

3

Feet

4

Hands

Your nose detects different scents and sends that information to your brain to identify smells.

1

Stores food

2

Protects your heart and lungs

3

Makes you taller

4

Helps you jump

The rib cage shields the heart and lungs from damage and helps you breathe.

1

Oxygen flow

2

Growth of animals

3

Connections between many food chains

4

Plant parts

A food web displays how different food chains in an ecosystem are linked together.

1

Wasp

2

Spider

3

Ant

4

Bee

Spiders are arachnids and have eight legs, unlike insects that only have six.

1

Rain and warm temperatures

2

Snow

3

Cold weather

4

Strong winds

Rainforests depend on heavy rainfall and constant warmth to support diverse plant and animal life.

1

It travels from roots to leaves

2

It stays in the soil

3

It turns to sugar in roots

4

It floats in the air

Water enters roots and moves through the stem to the leaves for photosynthesis.

1

Your bones grow

2

Your brain shuts off

3

Your eyes get cleaned and moistened

4

You hear better

Blinking spreads tears and clears debris to keep your eyes clean and moist.

1

Smell

2

Taste

3

Sight

4

Touch

Touch receptors in your skin let you detect temperature, pressure, and texture.

1

Butterfly

2

Rabbit

3

Elephant

4

Penguin

Butterflies go through complete metamorphosis, changing through four distinct life stages.

1

Tree bark

2

Green pigment in plants

3

Animal blood

4

Plant sugar

Chlorophyll absorbs sunlight for photosynthesis and gives plants their green color.

1

They hold rocks

2

They’re made of ice

3

They clean water and support life

4

They’re fun to swim in

Wetlands filter water, prevent floods, and provide habitats for many living things.

1

A red shirt

2

A green frog on a leaf

3

A glass of water

4

A tall tree

Camouflage helps animals blend into their surroundings to avoid predators.

1

Digestive system

2

Nervous system

3

Skeletal system

4

Respiratory system

The nervous system sends signals to and from the brain, controlling all body functions and sensations.

1

Carnivore

2

Omnivore

3

Herbivore

4

Insectivore

Omnivores eat both plants and meat, which gives them a wider range of food choices.

1

To keep warm

2

To eat during winter

3

To hide them from birds

4

To build nests

Squirrels bury nuts to ensure they have food when it’s scarce in colder months.

1

Keeps them warm

2

Protects from light

3

Helps them fly

4

Makes them grow

Fur provides insulation to help regulate body temperature in cold weather.

1

A community of living and non-living things

2

A city

3

A single plant

4

A cloud

Ecosystems include all organisms and physical environments in a particular area interacting with each other.

1

Swimming faster

2

Changing color

3

Catching insects

4

Making sounds

Frogs use sticky, extendable tongues to quickly catch insects for food.

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Think you’ve still got your grade school biology smarts? This quiz will test your knowledge of basic biology—organs, ecosystems, animals, and more. Let’s see if you’re sharper than a fifth grader when it comes to science!

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