Food Chains and Food Webs: Interactive Learning Quizzes for 6th Grade Science

Question 1

In a food chain, which of these shows the correct order of energy flow?

Accepted Answer

Producer -> Primary Consumer -> Secondary Consumer -> Tertiary Consumer

Answer

Tertiary Consumer -> Secondary Consumer -> Primary Consumer -> Producer

Answer

Producer -> Secondary Consumer -> Primary Consumer -> Tertiary Consumer

Answer

Tertiary Consumer -> Primary Consumer -> Secondary Consumer -> Producer

Question 2

In a food chain, which organism is the producer?

Accepted Answer

Grass

Answer

Rabbit

Answer

Fox

Answer

Decomposer

Question 3

In a food chain, which organism consumes plants?

Accepted Answer

Deer

Answer

Hawk

Answer

Grass

Answer

Mushroom

Question 4

In an ecosystem, what is a food web?

Accepted Answer

A complex network of connected food chains that shows how energy and nutrients move through an ecosystem.

Answer

A group of organisms that rely on each other for food.

Answer

A diagram that shows how much energy is lost at each level of a food chain.

Answer

A straight line of organisms that shows how energy and nutrients pass from a producer to a top predator.

Question 5

What is a unique characteristic of food webs that is not found in food chains?

Accepted Answer

They involve multiple interconnected food chains.

Answer

They always include producers, consumers, and decomposers.

Answer

They illustrate the direction of energy flow.

Answer

They are linear.

Question 6

In a food web, which of the following is NOT an organism that participates in the transfer of energy?

Accepted Answer

Food chain

Answer

Producer

Answer

Consumer

Answer

Decomposer

Question 7

What is a food chain?

Accepted Answer

A step-by-step line of living things where each one eats the one before it

Answer

A tangled web of living things where each one eats many different things

Answer

A group of living things that fight over the same food

Answer

A group of living things that share the same home

Question 8

Which of the following is NOT a living organism in a food chain?

Accepted Answer

Abiotic factors

Answer

Producers

Answer

Consumers

Answer

Decomposers

Question 9

In a food web, what does the trophic level of an organism indicate?

Accepted Answer

Its position in the food web based on its diet

Answer

The total energy available to it

Answer

The number of organisms at its trophic level

Answer

The type of organism at the top of the food web

Question 10

What is not typically found in a food chain?

Accepted Answer

Decomposer

Answer

Plant

Answer

Herbivore

Answer

Carnivore

Question 11

What is a key characteristic of food chains and food webs?

Accepted Answer

They show the feeding relationships between organisms in a linear or cyclic diagram.

Answer

They only include producers and consumers.

Answer

They show the relative abundance of different organisms in an ecosystem.

Answer

They are always linear, never cyclic.

Question 12

How do food webs differ from food chains?

Accepted Answer

They display the interconnected feeding relationships among multiple organisms in an ecosystem.

Answer

They depict feeding connections between specific organisms.

Answer

They are straightforward depictions of energy flow through an ecosystem.

Answer

They only include producers and consumers.

Question 13

In a food web, which organism consumes plants?

Accepted Answer

Grasshopper

Answer

Plant

Answer

Snake

Answer

Bacteria

Question 14

In a food web, which organism is a primary producer?

Accepted Answer

Tree

Answer

Lion

Answer

Mushroom

Answer

Whale

Question 15

In a food web, which organism consumes other secondary consumers?

Accepted Answer

Hawk

Answer

Grass

Answer

Rabbit

Answer

Fox

Question 16

In a food chain, which organism breaks down dead plants and animals, putting nutrients back into the soil?

Accepted Answer

Decomposers

Answer

Producers

Answer

Consumers

Question 17

In a food chain, if grass is a producer and a rabbit is a primary consumer, what type of animal eats the rabbit?

Accepted Answer

Secondary consumer

Answer

Producer

Answer

Decomposer

Question 18

What is a defining characteristic of food chains and food webs?

Accepted Answer

They show how energy moves through ecosystems.

Answer

They are made up only of straight lines.

Answer

They only include plants and animals.

Question 19

In a food chain or food web, what do carnivores primarily eat?

Accepted Answer

Animals

Answer

Plants

Answer

Inorganic materials

Question 20

Which organisms are the foundation of food chains and food webs, providing energy for all other organisms?

Accepted Answer

Organisms that create their own food using sunlight

Answer

Animals that consume plants

Answer

Organisms that decompose dead plants and animals

Question 21

In a food chain, what is the correct order of trophic levels?

Accepted Answer

Producer, Primary consumer, Secondary consumer, Tertiary consumer

Answer

Primary consumer, Producer, Secondary consumer, Tertiary consumer

Answer

Tertiary consumer, Secondary consumer, Primary consumer, Producer

Answer

Producer, Tertiary consumer, Secondary consumer, Primary consumer

Question 22

In a food chain or food web, how does energy primarily move from one organism to another?

Accepted Answer

Through chemical reactions

Answer

Through physical touch

Answer

Through sunlight

Answer

Through electrical signals

Question 23

In a food chain or food web, which type of relationship involves one organism benefiting while the other is not affected or harmed?

Accepted Answer

Commensalism

Answer

Mutualism

Answer

Parasitism

Question 24

In an energy pyramid, what does the width of each level show?

Accepted Answer

The amount of energy available at that level

Answer

The number of organisms at that level

Answer

The size of organisms at that level

Answer

The types of organisms at that level

Question 25

In a food web, which organisms break down dead organisms and return nutrients to the ecosystem?

Accepted Answer

Decomposers

Answer

Producers

Answer

Consumers

Question 26

In a food chain, which organism harnesses the sun's energy to create its own nourishment, forming the base of the food chain?

Accepted Answer

Producer

Answer

Herbivore

Answer

Carnivore

Answer

Decomposer

Question 27

Which interaction in a food chain is NOT a symbiotic relationship?

Accepted Answer

Competition

Answer

Mutualism

Answer

Commensalism

Answer

Parasitism

Question 28

In a food chain, which organisms are the first link and create their own food?

Accepted Answer

Producers

Answer

Consumers

Answer

Decomposers

Question 29

Food webs are more complex than food chains because they include:

Accepted Answer

Multiple interconnected food chains.

Answer

Only the main food chains in an ecosystem.

Answer

Only the organisms that are at the top of the food chain.

Question 30

In the food chain: grass, grasshopper, hawk, what is the correct order of trophic levels?

Accepted Answer

Grass -> Grasshopper -> Hawk

Answer

Grass -> Hawk -> Grasshopper

Answer

Hawk -> Grasshopper -> Grass

Answer

Grass -> Snake -> Hawk

Question 31

In a food chain, which organism is at the very top?

Accepted Answer

Top predators

Answer

Producers

Answer

Primary consumers

Answer

Secondary consumers

Question 32

In a food chain, which organism is at the very top, consuming all other organisms?

Accepted Answer

Top predators

Answer

Producers

Answer

Primary consumers

Answer

Secondary consumers

Question 33

In a food chain, what is the primary function of decomposers?

Accepted Answer

Decompose dead organisms, releasing nutrients back into the soil for plants.

Answer

Consume excess energy to prevent imbalances.

Answer

Compete with producers for resources.

Answer

Control populations by consuming other organisms.

Question 34

In a food chain, which organism creates its own food using sunlight?

Accepted Answer

Grass

Answer

Hawk

Answer

Snake

Question 35

In a food web, which interaction describes a situation where one organism benefits from another without harming or benefiting it?

Accepted Answer

A bee collecting nectar from a flower

Answer

A bird eating a worm

Answer

Two wolves fighting over territory

Question 36

In a food chain, which organism type moves energy from plants to animals?

Accepted Answer

Primary consumers

Answer

Producers

Answer

Secondary consumers

Question 37

In a healthy ecosystem, what type of symbiotic relationship occurs when both species benefit from their interaction?

Accepted Answer

Mutualism

Answer

Commensalism

Answer

Parasitism

Question 38

In a food chain, who is the organism that gets eaten by other organisms?

Accepted Answer

Consumer

Answer

Producer

Answer

Decomposer

Answer

Predator

Question 39

In a food web, which term describes an organism that eats both plants and animals?

Accepted Answer

Omnivore

Answer

Producer

Answer

Consumer

Answer

Decomposer

Question 40

In a food web, which type of relationship helps one organism without affecting the other?

Accepted Answer

Commensalism

Answer

Mutualism

Answer

Parasitism

Answer

Predation

Question 41

In a food chain, what do the arrows indicate?

Accepted Answer

Energy flow

Answer

Organism habitat

Answer

Organism size

Answer

Organism interactions

Question 42

In an ecological pyramid, like an energy pyramid or biomass pyramid, which shape shows the trophic level with the most energy available?

Accepted Answer

Triangle with a wide base and narrow top

Answer

Triangle with a narrow base and wide top

Answer

Rectangle with equal width and height

Answer

Circle

Question 43

Where does the energy that living things use in a food chain ultimately come from?

Accepted Answer

Sunlight

Answer

Water

Answer

Air

Answer

Soil

Question 44

Question:

What is a keystone species and how does it impact the stability of food webs?

Accepted Answer

Option 1: A keystone species has a large effect on its ecosystem compared to its numbers.

Answer

A keystone species is always the top predator in a food web.

Answer

A keystone species is always the top predator in a food web.

Answer

A keystone species is always the top predator in a food web.

Question 45

How can human activities have a positive impact on food chains and food webs?

Accepted Answer

Conserving habitats for threatened species

Answer

Hunting endangered species to extinction

Answer

Introducing non-native species into an ecosystem

Question 46

In the field, how do scientists mainly study food chains and food webs?

Accepted Answer

Observing animals' feeding habits and interactions

Answer

Examining only fossil records

Answer

Using models without field data

Question 47

Which organism is a producer in a marine food web?

Accepted Answer

Phytoplankton

Answer

Sea turtle

Answer

Shark

Answer

Coral

Question 48

How do decomposers contribute to food chains?

Accepted Answer

They break down organic matter into nutrients

Answer

They transfer energy from producers to consumers

Answer

They regulate populations of producers

Answer

They create new species of organisms

Question 49

What is the primary purpose of a food web?

Accepted Answer

To show the feeding relationships in an ecosystem

Answer

To determine the energy levels of organisms

Answer

To predict population changes

Answer

To calculate nutrient availability

Question 50

In a food chain, which organism is the primary producer, providing the initial source of energy?

Accepted Answer

Grass

Answer

Hawk

Answer

Snake

Answer

Frog

Question 51

In a food chain, energy is passed from one organism to another.

Accepted Answer

True

Answer

False

Question 52

Which of these is an example of a secondary consumer?

Accepted Answer

Snake

Answer

Grasshopper

Answer

Hawk

Answer

Plant

Question 53

What is the main source of energy for most food chains?

Accepted Answer

Sun

Answer

Wind

Answer

Soil

Answer

Water

Question 54

Which of the following is a living thing that can affect food chains?

Accepted Answer

Predation

Answer

Climate

Answer

Soil type

Answer

Wind speed

Question 55

When altering food chains and food webs, what ethical obligation do humans have?

Accepted Answer

Consider all species and the entire ecosystem.

Answer

Prioritize only the potential benefits to humans.

Answer

Humans have the right to alter food chains and food webs without regard for the consequences.

Question 56

How does traditional ecological knowledge contribute to our understanding of food chain and food web changes over time?

Accepted Answer

It shows long-term ecosystem changes.

Answer

It confirms the accuracy of scientific theories.

Answer

It predicts future food web changes.

Question 57

How do changes in precipitation levels impact food chains and food webs in an ecosystem?

Accepted Answer

Increased precipitation may lead to more plant growth, supporting larger herbivore populations.

Accepted Answer

Reduced precipitation may result in less plant growth, causing a decline in herbivore populations.

Answer

Changes in precipitation usually have little to no effect on food chains and food webs.

Answer

Increased precipitation primarily affects predator-prey relationships, benefiting predators.

Question 58

How do mutualistic relationships contribute to the stability and variety of food webs?

Accepted Answer

By promoting species diversity and ecosystem resilience

Answer

By increasing competition for resources

Answer

By disrupting energy flow through the food web

Question 59

Which of the following statements about food webs is incorrect?

Accepted Answer

Food webs remain unchanged and do not evolve over time.

Answer

Food webs depict the feeding connections between organisms in an ecosystem.

Answer

Food webs are typically more intricate than food chains.

Answer

Food webs aid in comprehending the flow of energy and nutrients within an ecosystem.

Question 60

In a food web, how do organisms at different levels interact to transfer energy and maintain the balance of the ecosystem?

Accepted Answer

Each level gets energy from the level below, allowing energy to flow in one direction.

Answer

Different levels compete fiercely for resources and energy, with the highest level controlling the flow of energy.

Answer

Different levels are separate and don't affect each other's energy flow.

Question 61

In food chains and food webs, what is the main role of primary producers?

Accepted Answer

To capture energy from the sun and turn it into glucose through photosynthesis.

Answer

To eat other organisms and get energy.

Answer

To break down organic matter and recycle nutrients in the ecosystem.

Question 62

In a food chain, which organism starts the energy flow?

Accepted Answer

Producer

Answer

Consumer

Answer

Decomposer

Answer

Predator

Question 63

Which of these is NOT part of a food web?

Accepted Answer

Car

Answer

Grass

Answer

Fox

Answer

Bird

Question 64

What do decomposers in a food chain mainly do?

Accepted Answer

Break down dead things

Answer

Produce food

Answer

Eat plants

Answer

Provide homes for others