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?

Question 1

Which of These Is a Reptile?

Question 1

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?

Question 1

Which of These Is an Example of Camouflage?

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What Body System Includes Your Brain and Nerves?

Question 1

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

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

Sunlight

2

Sugar

3

Salt

4

Sand

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

1

Tongue

2

Eyes

3

Nose

4

Ears

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

1

Nose

2

Eyes

3

Ears

4

Mouth

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

1

Leaves

2

Nectar

3

Water

4

Bark

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

1

Cow

2

Chicken

3

Dog

4

Horse

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

1

Caffeine

2

Sugar

3

Calcium

4

Oxygen

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

1

Stomach

2

Lungs

3

Heart

4

Kidneys

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

1

Hearing

2

Taste

3

Touch

4

Smell

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

1

Snakes

2

Fish

3

Lizards

4

Frogs

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

1

Stem

2

Leaves

3

Roots

4

Flower

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

1

Reptile

2

Amphibian

3

Mammal

4

Bird

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

1

Brain

2

Stomach

3

Liver

4

Lungs

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

1

Heart

2

Liver

3

Kidneys

4

Lungs

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

1

Rabbit

2

Fox

3

Grass

4

Owl

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

1

Respiratory system

2

Circulatory system

3

Digestive system

4

Muscular system

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

1

Worm

2

Ant

3

Bee

4

Butterfly

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

Seeing

2

Breathing

3

Protection

4

Thinking

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

Platelets

2

White blood cells

3

Plasma

4

Red blood cells

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

1

Oxygen

2

Sulfur

3

Carbon dioxide

4

Nitrogen

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

1

Veins

2

Muscles

3

Lungs

4

Blood

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

1

Foot

2

Ear

3

Tongue

4

Nose

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

1

Glue

2

Plastic

3

TV

4

Water

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

1

Only meat

2

Plants and animals

3

Only plants

4

Fruits only

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

1

Cell

2

Organ

3

Organism

4

Tissue

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

1

Wings

2

Teeth

3

Legs

4

Nose

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

1

Carbon dioxide

2

Nitrogen

3

Oxygen

4

Hydrogen

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

Nose

2

Inner ear

3

Stomach

4

Liver

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

1

Jellyfish

2

Dog

3

Worm

4

Octopus

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

1

Gills

2

Nostrils

3

Lungs

4

Skin

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

1

Help you smell

2

Filter air

3

Protect eyes from dust

4

Balance hearing

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

1

Ant

2

Cow

3

Mushroom

4

Tree

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

1

Through the umbilical cord

2

Through the nose

3

By swallowing air

4

With lungs

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

1

Penguin

2

Frog

3

Whale

4

Turtle

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

1

Create bones

2

Filter toxins

3

Pump blood

4

Store oxygen

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

1

Eyes

2

Wings

3

Beaks

4

Legs

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

1

Platelets

2

Plasma

3

Hemoglobin

4

Chlorophyll

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

1

Butterfly

2

Elephant

3

Dog

4

Fish

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

1

Heart

2

Liver

3

Stomach

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 get stronger

3

Your body cools down

4

You absorb water

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

1

Ovary

2

Leaf

3

Petal

4

Stem

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

1

Break down proteins

2

Absorb water

3

Pump blood

4

Store oxygen

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

1

Chrysalis

2

Caterpillar

3

Butterfly

4

Egg

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

1

Hot sand

2

Fast running

3

Thick feathers and fat

4

Sunlight

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

1

Chicken

2

Apples

3

Bread

4

Milk

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

1

Build muscles

2

Control sugar

3

Fight infection

4

Carry oxygen

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

1

Digestive system

2

Circulatory system

3

Skeletal system

4

Respiratory system

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

1

Wolf

2

Eagle

3

Cow

4

Shark

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

1

To absorb water and nutrients

2

To fly

3

To breathe

4

To photosynthesize

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

1

Nervous system

2

Skeletal system

3

Respiratory system

4

Digestive system

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

1

Eyes

2

Teeth

3

Skin

4

Bones

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

1

With chemicals

2

By changing color

3

With blinking

4

With speech

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

1

Seeing

2

Flight and warmth

3

Swimming

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

Spider

2

Butterfly

3

Ant

4

Bee

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

1

Store water

2

Make food for the plant

3

Attract insects

4

Grow roots

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

1

Exercise

2

Eating candy

3

Watching TV

4

Sleeping late

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

Lion

4

Cow

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

1

It disappears

2

It can heal over time

3

It gets replaced

4

It melts

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

1

Flat molars

2

Small incisors

3

Sharp canines

4

Pointy fangs

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

1

Bird

2

Mouse

3

Cat

4

Jellyfish

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

Toys

3

Music

4

Food

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

1

Feathers

2

Bark

3

Silk

4

Hair

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

1

Hearing

2

Sight

3

Smell

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 avoid other birds

4

To find food and better weather

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

1

To dig holes

2

To reach high leaves

3

To walk faster

4

To hear better

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

1

Nose

2

Feet

3

Eyes

4

Hands

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

1

Protects your heart and lungs

2

Stores food

3

Helps you jump

4

Makes you taller

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

1

Oxygen flow

2

Plant parts

3

Growth of animals

4

Connections between many food chains

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

1

Spider

2

Ant

3

Bee

4

Wasp

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

1

Strong winds

2

Cold weather

3

Rain and warm temperatures

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 travels from roots to leaves

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 eyes get cleaned and moistened

2

You hear better

3

Your brain shuts off

4

Your bones grow

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

Green pigment in plants

2

Animal blood

3

Plant sugar

4

Tree bark

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

1

They’re fun to swim in

2

They’re made of ice

3

They hold rocks

4

They clean water and support life

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

1

A tall tree

2

A glass of water

3

A green frog on a leaf

4

A red shirt

Camouflage helps animals blend into their surroundings to avoid predators.

1

Skeletal system

2

Digestive system

3

Nervous system

4

Respiratory system

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

1

Omnivore

2

Carnivore

3

Insectivore

4

Herbivore

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

1

To build nests

2

To eat during winter

3

To hide them from birds

4

To keep warm

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

1

Protects from light

2

Keeps them warm

3

Makes them grow

4

Helps them fly

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

1

A city

2

A community of living and non-living things

3

A single plant

4

A cloud

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

1

Making sounds

2

Swimming faster

3

Catching insects

4

Changing color

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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