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?

Question 1

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?

Question 1

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?

Question 1

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?

Question 1

What Is the Job of the Large Intestine?

Question 1

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

Question 1

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?

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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?

Question 1

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

Liver

2

Heart

3

Stomach

4

Lungs

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

1

Nitrogen

2

Oxygen

3

Carbon dioxide

4

Helium

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

Eyes

2

Ears

3

Tongue

4

Nose

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

Water

2

Bark

3

Nectar

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

Calcium

3

Sugar

4

Oxygen

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

1

Lungs

2

Stomach

3

Kidneys

4

Heart

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

1

Touch

2

Taste

3

Hearing

4

Smell

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

1

Lizards

2

Snakes

3

Frogs

4

Fish

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

1

Leaves

2

Roots

3

Stem

4

Flower

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

1

Reptile

2

Bird

3

Amphibian

4

Mammal

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

1

Liver

2

Lungs

3

Brain

4

Stomach

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

1

Kidneys

2

Liver

3

Heart

4

Lungs

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

1

Owl

2

Rabbit

3

Fox

4

Grass

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

1

Muscular system

2

Circulatory system

3

Respiratory system

4

Digestive system

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

1

Butterfly

2

Ant

3

Bee

4

Worm

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

1

Branches

2

Fruit

3

Trunk

4

Bark

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

1

Protection

2

Seeing

3

Breathing

4

Thinking

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

1

Cat

2

Horse

3

Elephant

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

Lungs

2

Muscles

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

Glue

2

Water

3

TV

4

Plastic

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

1

Fruits only

2

Only meat

3

Plants and animals

4

Only plants

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

1

Tissue

2

Organism

3

Organ

4

Cell

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

Carbon dioxide

2

Nitrogen

3

Hydrogen

4

Oxygen

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

1

Heart

2

Lungs

3

Brain

4

Liver

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

1

Inner ear

2

Nose

3

Stomach

4

Liver

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

1

Worm

2

Jellyfish

3

Octopus

4

Dog

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

1

Nostrils

2

Lungs

3

Gills

4

Skin

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

1

Protect eyes from dust

2

Balance hearing

3

Filter air

4

Help you smell

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

1

Mushroom

2

Ant

3

Tree

4

Cow

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

1

By swallowing air

2

Through the umbilical cord

3

With lungs

4

Through the nose

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

1

Turtle

2

Whale

3

Frog

4

Penguin

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

1

Store oxygen

2

Create bones

3

Filter toxins

4

Pump blood

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

Chlorophyll

3

Platelets

4

Plasma

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

1

Fish

2

Dog

3

Elephant

4

Butterfly

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

1

Stomach

2

Liver

3

Heart

4

Spinal cord

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

1

You lose oxygen

2

You absorb water

3

Your body cools down

4

You get stronger

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

1

Stem

2

Ovary

3

Leaf

4

Petal

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

1

Break down proteins

2

Pump blood

3

Store oxygen

4

Absorb water

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

1

Egg

2

Chrysalis

3

Butterfly

4

Caterpillar

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

Milk

2

Bread

3

Apples

4

Chicken

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

1

Control sugar

2

Build muscles

3

Carry oxygen

4

Fight infection

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 breathe

2

To fly

3

To photosynthesize

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

Bones

2

Teeth

3

Eyes

4

Skin

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

1

By changing color

2

With chemicals

3

With speech

4

With blinking

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

1

Swimming

2

Flight and warmth

3

Seeing

4

Breathing

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

Ant

3

Butterfly

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

Sleeping late

2

Watching TV

3

Exercise

4

Eating candy

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

1

Carry oxygen

2

Fight infections

3

Pump blood

4

Digest food

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

1

Horse

2

Sheep

3

Cow

4

Lion

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

1

It melts

2

It can heal over time

3

It disappears

4

It gets replaced

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

1

Sharp canines

2

Pointy fangs

3

Small incisors

4

Flat molars

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

1

Jellyfish

2

Cat

3

Bird

4

Mouse

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

1

Catch insects

2

Filter light

3

Carry water and support the plant

4

Digest food

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

1

Food

2

Music

3

Toys

4

Books

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

1

Feathers

2

Silk

3

Hair

4

Bark

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

1

Smell

2

Sight

3

Hearing

4

Taste

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

1

To grow bigger

2

To sleep more

3

To find food and better weather

4

To avoid other birds

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

1

To walk faster

2

To hear better

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

Feet

2

Nose

3

Hands

4

Eyes

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

1

Stores food

2

Makes you taller

3

Helps you jump

4

Protects your heart and lungs

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

1

Oxygen flow

2

Plant parts

3

Connections between many food chains

4

Growth of animals

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

1

Ant

2

Wasp

3

Bee

4

Spider

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

1

Cold weather

2

Rain and warm temperatures

3

Strong winds

4

Snow

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 brain shuts off

2

Your bones grow

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

Taste

2

Smell

3

Touch

4

Sight

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

1

Penguin

2

Rabbit

3

Elephant

4

Butterfly

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

1

Tree bark

2

Animal blood

3

Green pigment in plants

4

Plant sugar

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

1

They clean water and support life

2

They’re made of ice

3

They hold rocks

4

They’re fun to swim in

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

1

A green frog on a leaf

2

A tall tree

3

A glass of water

4

A red shirt

Camouflage helps animals blend into their surroundings to avoid predators.

1

Respiratory system

2

Nervous system

3

Skeletal system

4

Digestive system

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

1

Carnivore

2

Herbivore

3

Insectivore

4

Omnivore

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

1

To build nests

2

To hide them from birds

3

To eat during winter

4

To keep warm

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

1

Makes them grow

2

Keeps them warm

3

Protects from light

4

Helps them fly

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

1

A cloud

2

A city

3

A single plant

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

Changing color

2

Making sounds

3

Swimming faster

4

Catching insects

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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