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?

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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?

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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?

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What Does a Food Web Show?

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Which of These Creatures Has Eight Legs?

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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?

Question 1

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

Stomach

4

Liver

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

1

Helium

2

Oxygen

3

Carbon dioxide

4

Nitrogen

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

1

Salt

2

Sugar

3

Sunlight

4

Sand

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

1

Tongue

2

Nose

3

Eyes

4

Ears

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

1

Nose

2

Ears

3

Eyes

4

Mouth

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

1

Bark

2

Nectar

3

Water

4

Leaves

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

Caffeine

2

Oxygen

3

Sugar

4

Calcium

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

1

Kidneys

2

Lungs

3

Heart

4

Stomach

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

1

Hearing

2

Touch

3

Taste

4

Smell

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

1

Snakes

2

Lizards

3

Fish

4

Frogs

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

1

Roots

2

Leaves

3

Flower

4

Stem

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

1

Bird

2

Mammal

3

Reptile

4

Amphibian

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

1

Lungs

2

Brain

3

Liver

4

Stomach

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

1

Heart

2

Kidneys

3

Liver

4

Lungs

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

1

Grass

2

Fox

3

Rabbit

4

Owl

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

1

Muscular system

2

Respiratory system

3

Digestive system

4

Circulatory system

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

1

Butterfly

2

Worm

3

Ant

4

Bee

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

1

Branches

2

Bark

3

Trunk

4

Fruit

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

1

Protection

2

Thinking

3

Breathing

4

Seeing

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

1

Cat

2

Elephant

3

Horse

4

Snake

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

1

Plasma

2

White blood cells

3

Red blood cells

4

Platelets

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

1

Carbon dioxide

2

Oxygen

3

Sulfur

4

Nitrogen

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

1

Blood

2

Lungs

3

Muscles

4

Veins

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

1

Ear

2

Foot

3

Tongue

4

Nose

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

1

Glue

2

Water

3

TV

4

Plastic

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

1

Plants and animals

2

Only meat

3

Fruits only

4

Only plants

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

1

Cell

2

Organ

3

Tissue

4

Organism

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

1

Legs

2

Teeth

3

Nose

4

Wings

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

1

Oxygen

2

Hydrogen

3

Carbon dioxide

4

Nitrogen

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

1

Liver

2

Lungs

3

Heart

4

Brain

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

1

Inner ear

2

Liver

3

Stomach

4

Nose

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

1

Jellyfish

2

Worm

3

Dog

4

Octopus

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

1

Skin

2

Gills

3

Nostrils

4

Lungs

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

1

Filter air

2

Protect eyes from dust

3

Help you smell

4

Balance hearing

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

1

Ant

2

Tree

3

Cow

4

Mushroom

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

1

Through the umbilical cord

2

With lungs

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

Turtle

3

Penguin

4

Frog

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

1

Store oxygen

2

Filter toxins

3

Pump blood

4

Create bones

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

1

Legs

2

Eyes

3

Wings

4

Beaks

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

1

Hemoglobin

2

Platelets

3

Plasma

4

Chlorophyll

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

1

Fish

2

Butterfly

3

Elephant

4

Dog

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

1

Liver

2

Stomach

3

Heart

4

Spinal cord

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

1

You get stronger

2

You lose oxygen

3

You absorb water

4

Your body cools down

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

1

Stem

2

Petal

3

Ovary

4

Leaf

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

1

Pump blood

2

Store oxygen

3

Break down proteins

4

Absorb water

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

1

Caterpillar

2

Egg

3

Chrysalis

4

Butterfly

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

1

Thick feathers and fat

2

Sunlight

3

Hot sand

4

Fast running

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

1

Apples

2

Milk

3

Bread

4

Chicken

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

1

Fight infection

2

Control sugar

3

Carry oxygen

4

Build muscles

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

1

Respiratory system

2

Digestive system

3

Circulatory system

4

Skeletal system

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

1

Cow

2

Eagle

3

Shark

4

Wolf

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

1

To photosynthesize

2

To fly

3

To absorb water and nutrients

4

To breathe

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

1

Digestive system

2

Respiratory system

3

Nervous system

4

Skeletal system

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

1

Bones

2

Skin

3

Teeth

4

Eyes

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

1

With chemicals

2

With blinking

3

With speech

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

Gravity pulling

2

Sound waves

3

Breathing air

4

Blocking light

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

1

Bee

2

Butterfly

3

Ant

4

Spider

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

1

Make food for the plant

2

Grow roots

3

Store water

4

Attract insects

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

1

Watching TV

2

Exercise

3

Sleeping late

4

Eating candy

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

1

Pump blood

2

Digest food

3

Fight infections

4

Carry oxygen

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

1

Horse

2

Lion

3

Cow

4

Sheep

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

1

It can heal over time

2

It gets replaced

3

It disappears

4

It melts

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

1

Pointy fangs

2

Small incisors

3

Sharp canines

4

Flat molars

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

1

Jellyfish

2

Bird

3

Cat

4

Mouse

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

1

Catch insects

2

Filter light

3

Digest food

4

Carry water and support the plant

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

1

Toys

2

Food

3

Music

4

Books

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

1

Feathers

2

Hair

3

Bark

4

Silk

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

1

Taste

2

Sight

3

Hearing

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 sleep more

3

To grow bigger

4

To avoid other birds

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

1

To hear better

2

To walk faster

3

To reach high leaves

4

To dig holes

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

1

Eyes

2

Feet

3

Hands

4

Nose

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

Helps you jump

4

Makes you taller

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

1

Growth of animals

2

Oxygen flow

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

Ant

3

Spider

4

Bee

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

1

Rain and warm temperatures

2

Strong winds

3

Cold weather

4

Snow

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

1

It stays in the soil

2

It floats in the air

3

It travels from roots to leaves

4

It turns to sugar in roots

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

1

Your bones grow

2

Your eyes get cleaned and moistened

3

Your brain shuts off

4

You hear better

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

1

Smell

2

Sight

3

Taste

4

Touch

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

1

Penguin

2

Butterfly

3

Elephant

4

Rabbit

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

1

Green pigment in plants

2

Plant sugar

3

Animal blood

4

Tree bark

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

1

They’re made of ice

2

They hold rocks

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 glass of water

2

A tall tree

3

A red shirt

4

A green frog on a leaf

Camouflage helps animals blend into their surroundings to avoid predators.

1

Respiratory system

2

Digestive system

3

Skeletal system

4

Nervous system

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

1

Herbivore

2

Omnivore

3

Insectivore

4

Carnivore

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

1

To hide them from birds

2

To eat during winter

3

To keep warm

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

Makes them grow

4

Helps them fly

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

1

A cloud

2

A single plant

3

A city

4

A community of living and non-living things

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

1

Catching insects

2

Swimming faster

3

Changing color

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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