Living Organisms: Interactive Quizzes for Fourth Graders

Question 1

During photosynthesis, plants use sunlight to convert carbon dioxide and water into what substances?

Accepted Answer

Oxygen and sugar

Answer

Only oxygen

Answer

Only water

Answer

Water and sugar

Question 2

Which stage is NOT part of a butterfly's life cycle?

Accepted Answer

Frog

Answer

Egg

Answer

Caterpillar

Answer

Pupa

Question 3

In a science experiment, a scientist changes the amount of light plants receive to see how it affects their growth. Which of these is the independent variable?

Accepted Answer

Light intensity

Answer

Plant height

Answer

Type of plants

Answer

Amount of water

Question 4

How do a polar bear's thick fur and blubber help it survive in its icy Arctic home?

Accepted Answer

The thick fur keeps the polar bear warm, and the blubber stores energy.

Answer

The thick fur helps the polar bear blend into its surroundings, and the blubber provides buoyancy.

Answer

The thick fur attracts prey, and the blubber provides protection from predators.

Answer

The thick fur repels water, and the blubber helps the polar bear swim.

Question 5

What is a potential disadvantage of biodiversity?

Accepted Answer

Increased competition for resources.

Answer

Provides a variety of food sources.

Answer

Helps regulate the Earth's climate.

Answer

Reduces pollution.

Question 6

Scientists use a system called taxonomy to classify living things. Which of the following shows the levels of classification, from broadest to most specific?

Accepted Answer

Domain - Kingdom - Phylum - Class - Family - Species

Answer

Species - Family - Class - Phylum - Kingdom - Domain

Answer

Kingdom - Domain - Phylum - Class - Family - Species

Answer

Species - Class - Phylum - Family - Kingdom - Domain

Question 7

Why do giraffes have long necks?

Accepted Answer

Giraffes with longer necks could reach more leaves, giving them an advantage.

Answer

Humans bred giraffes with longer necks.

Answer

A sudden change in their genes caused their necks to grow longer.

Answer

The environment changed, forcing giraffes to reach higher for food.

Question 8

When you inherit a dominant trait, what does it mean?

Accepted Answer

It will always be visible in your appearance.

Answer

It may or may not be visible in your appearance.

Answer

It will never be visible in your appearance.

Answer

It will only be visible if you inherit it from both parents.

Question 9

In an ecosystem, keystone species play a crucial role. What happens when a keystone species is removed from an ecosystem?

Accepted Answer

The removal can cause a domino effect, disrupting the food chain and potentially leading to other species' extinction.

Answer

Other species will have less competition, leading to population growth.

Answer

The ecosystem will quickly adjust, with other species taking over the keystone species' role.

Question 10

How does climate change impact the spread of plants and animals in different habitats?

Accepted Answer

Climate change can alter the temperature and rainfall in an area, making it difficult or impossible for certain plants and animals to survive there.

Answer

Climate change only affects the population of plants and animals in an ecosystem, not their distribution.

Answer

Climate change has no impact on the distribution of plants and animals in ecosystems.

Question 11

Which of the following best describes a living organism?

Accepted Answer

Something that can grow, reproduce, and respond to its surroundings

Answer

Something that can move and eat

Answer

Something that has a heartbeat

Answer

Something that needs air to survive

Question 12

How does biodiversity help an ecosystem stay healthy?

Accepted Answer

It makes the ecosystem more stable and able to handle changes.

Answer

It makes the ecosystem more colorful and varied.

Answer

It provides food for all the animals in the ecosystem.

Answer

It helps prevent the ecosystem from getting too crowded.

Question 13

What is a characteristic of living things?

Accepted Answer

They can make more of themselves.

Answer

They are made of plastic.

Answer

They don't need energy.

Answer

They can always fly.

Question 14

Which characteristic is shared by all living organisms?

Accepted Answer

Ability to sense and react to surroundings

Answer

Ability to move

Answer

Presence of a nucleus

Question 15

Which of the following is NOT a characteristic of living organisms?

Accepted Answer

Made of non-living matter

Answer

Reproduction

Answer

Growth and development

Question 16

Which of these is NOT a characteristic of living things?

Accepted Answer

They are made of metal.

Answer

They grow and change.

Answer

They need food to survive.

Question 17

Which of these is NOT a characteristic of living things?

Accepted Answer

Made mostly of non-living materials

Answer

Responding to their surroundings

Answer

Growing and changing

Question 18

Which of these is NOT a characteristic of living things?

Accepted Answer

They are made of rocks.

Answer

They can sense and respond to their surroundings.

Answer

They can make more of themselves.

Answer

They need energy to live.

Question 19

Which feature is common to all living things?

Accepted Answer

Ability to grow and reproduce

Answer

Made of non-living parts

Answer

Shape and size

Answer

Can fly

Question 20

What do living organisms need to survive?

Accepted Answer

Food, water, and air

Answer

Toys and games

Answer

A computer

Answer

Only sunlight

Question 21

Which plant part takes in water and nutrients from the soil?

Accepted Answer

Roots

Answer

Leaves

Answer

Stem

Answer

Flowers

Question 22

How do plants produce their own food?

Accepted Answer

Through photosynthesis

Answer

By eating insects

Answer

By digesting nutrients

Answer

By absorbing water

Question 23

Which of these resources can be replaced naturally?

Accepted Answer

Trees

Answer

Oil

Answer

Coal

Answer

Natural gas

Question 24

What force keeps us on the ground?

Accepted Answer

Gravity

Answer

Friction

Answer

Magnetism

Answer

Tension

Question 25

When water turns from a liquid to a gas, what is the process called?

Accepted Answer

Evaporation

Answer

Condensation

Answer

Precipitation

Answer

Sublimation

Question 26

What is a defining characteristic of living organisms?

Accepted Answer

Ability to reproduce

Answer

Made of non-living materials

Answer

Cannot respond to changes in the environment

Answer

Do not require energy

Question 27

Which of the following describes plants' nutritional mode?

Accepted Answer

They produce their own food through photosynthesis

Answer

They consume other organisms for food

Answer

They break down dead organisms for nutrients

Answer

They do not need any food to survive

Question 28

Which part of a plant cell is responsible for making food?

Accepted Answer

Chloroplast

Answer

Mitochondria

Answer

Nucleus

Answer

Ribosomes

Question 29

How do plants absorb water and nutrients from the soil?

Accepted Answer

Through their roots

Answer

Through photosynthesis

Answer

Through breathing

Answer

Through their leaves

Question 30

Which of the following is not a living thing?

Accepted Answer

A rock

Answer

A tree

Answer

A bird

Answer

A flower

Question 31

What word describes the variety of living things on Earth?

Accepted Answer

Biodiversity

Answer

Ecosystem

Answer

Habitat

Answer

Population

Question 32

What's the difference between an animal that eats plants and one that eats meat?

Accepted Answer

Herbivores eat plants; carnivores eat animals

Answer

Carnivores eat plants; herbivores eat animals

Answer

Both eat plants and animals

Answer

There's no difference

Question 33

Which of these is NOT a characteristic of living things?

Accepted Answer

Being made of non-living materials

Answer

Growing and changing

Answer

Having babies

Answer

Reacting to their surroundings

Question 34

What part of a plant takes in water and nutrients from the ground?

Accepted Answer

Roots

Answer

Leaves

Answer

Stem

Answer

Flowers

Question 35

Which of these animals is a mammal?

Accepted Answer

Cat

Answer

Bird

Answer

Fish

Answer

Snake

Question 36

What is the process where plants use sunlight to turn carbon dioxide and water into sugar?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Transpiration

Answer

Decomposition

Question 37

What do decomposers do in a habitat?

Accepted Answer

Break down dead plants and animals and put their nutrients back into the soil

Answer

Make food for other living things

Answer

Keep the population of living things in check

Answer

Control the amount of water in a habitat

Question 38

Which of these is a renewable resource?

Accepted Answer

Trees

Answer

Oil

Answer

Coal

Answer

Plastic

Question 39

What is the purpose of a scientific observation?

Accepted Answer

To collect information

Answer

To make a judgment

Answer

To prove a guess

Answer

To form an opinion

Question 40

Which of the following is NOT a characteristic of living organisms?

Accepted Answer

They are made of non-living matter.

Answer

They are organized into cells.

Answer

They can move around.

Answer

They can reproduce.

Question 41

What is the smallest unit that can carry out all life functions?

Accepted Answer

A cell

Answer

An atom

Answer

A molecule

Answer

A tissue

Question 42

Which of the following structures is responsible for photosynthesis in plants?

Accepted Answer

Chlorophyll

Answer

Mitochondria

Answer

Vacuole

Answer

Nucleus

Question 43

What is the process by which plants make their own food called?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Digestion

Answer

Excretion

Question 44

Which of the following is a type of animal that is classified as a vertebrate?

Accepted Answer

Snake

Answer

Jellyfish

Answer

Spider

Answer

Insect

Question 45

What are the three main parts of a leaf?

Accepted Answer

Blade, petiole, and veins

Answer

Roots, stem, and flowers

Answer

Chlorophyll, water, and sunlight

Answer

Carbon dioxide, oxygen, and water

Question 46

Which of the following is a renewable resource?

Accepted Answer

Water

Answer

Fossil fuels

Answer

Gold

Answer

Oil

Question 47

What is the role of decomposers in an ecosystem?

Accepted Answer

To break down dead organisms

Answer

To produce food for other organisms

Answer

To release oxygen into the atmosphere

Answer

To absorb carbon dioxide from the atmosphere

Question 48

The process by which water moves from the roots to the leaves of a plant is called:

Accepted Answer

Transpiration

Answer

Evaporation

Answer

Condensation

Answer

Respiration

Question 49

Plants are classified as producers because they:

Accepted Answer

Can make their own food

Answer

Eat other organisms

Answer

Break down dead organisms

Answer

Cannot make their own food

Question 50

Which of the following is NOT a function of the respiratory system?

Accepted Answer

Digesting food

Answer

Exchanging oxygen and carbon dioxide

Answer

Removing waste

Answer

Regulating body temperature

Question 51

The smallest unit of life is the:

Accepted Answer

Cell

Answer

Atom

Answer

Organ

Answer

Tissue

Question 52

The process by which plants convert sunlight into energy is called:

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Decomposition

Answer

Fermentation

Question 53

Which of the following is NOT a kingdom of living organisms?

Accepted Answer

Computer

Answer

Animalia

Answer

Plantae

Answer

Protista

Question 54

The outermost layer of a plant cell is called the:

Accepted Answer

Cell wall

Answer

Cell membrane

Answer

Cytoplasm

Answer

Vacuole

Question 55

Which of the following is NOT a factor that affects the survival of living organisms?

Accepted Answer

Homework

Answer

Food availability

Answer

Predators

Answer

Climate

Question 56

The process by which living organisms change and adapt to their environment over time is called:

Accepted Answer

Evolution

Answer

Hibernation

Answer

Migration

Answer

Respiration

Question 57

Which feature is NOT a characteristic of living organisms?

Accepted Answer

Man-made movement

Answer

Reproduction

Answer

Growth and development

Answer

Response to the environment

Question 58

What is the main difference between animals and plants?

Accepted Answer

Animals have a nervous system.

Answer

Animals cannot create their own food.

Answer

Animals are not made of cells.

Answer

Animals only live in water.

Question 59

What is the primary function of the cell membrane?

Accepted Answer

To regulate what goes in and out of the cell

Answer

To store genetic information

Answer

To create proteins

Answer

To provide energy for the cell

Question 60

Which adaptation helps a cactus survive in a desert setting?

Accepted Answer

Waxy and thick skin

Answer

Large leaves with many stomata

Answer

Shallow root system

Answer

Storing large amounts of water

Question 61

What energy source do most plants mainly use?

Accepted Answer

Sunlight

Answer

Chemical reactions

Answer

Heat from the surroundings

Answer

Electrical current

Question 62

Which process allows plants to create their own food?

Accepted Answer

Photosynthesis

Answer

Respiration

Answer

Transpiration

Answer

Chemosynthesis

Question 63

Which organism is classified as a decomposer?

Accepted Answer

Mushroom

Answer

Grasshopper

Answer

Tree

Answer

Butterfly

Question 64

Which of the following is an example of an inherited trait?

Accepted Answer

Eye color

Answer

Favorite meal

Answer

Riding a bicycle

Answer

Number of friends