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Easter Term Science Quiz - Ecology

Total questions: 54

Worksheet time: 27mins

Name
Class
Date
1.

Ecology is best defined as the study of

a)

plants and animals only

b)

how organisms interact with each other and their environment

c)

different types of ecosystems

d)

food chains and food webs

2.

Which statement best describes an ecosystem?

a)

A place where an organism lives

b)

A group of similar organisms

c)

A group of living organisms interacting with each other and their environment

d)

All plants and animals on Earth

3.

The place where an organism lives is called its

a)

niche

b)

ecosystem

c)

habitat

d)

community

4.

A biological niche refers to

a)

where an organism lives

b)

the role of an organism in an ecosystem

c)

the number of organisms in an area

d)

all living things in one place

5.

Species are defined as groups of organisms that

a)

live in the same ecosystem

b)

eat the same food

c)

can interbreed and produce fertile offspring

d)

look exactly alike

6.

Population means

a)

all organisms living on Earth

b)

the number of species in an ecosystem

c)

the total number of one species in an ecosystem

d)

all plants in an ecosystem

7.

A community is

a)

one type of organism in an ecosystem

b)

all different populations living together

c)

the non-living parts of an ecosystem

d)

the role of organisms

8.

Which best describes the environment in an ecosystem?

a)

Only living organisms

b)

Plants and animals together

c)

Surrounding conditions such as water, air, land, and space

d)

The habitat of animals only

9.

Biotic factors are

a)

non-living parts of an ecosystem

b)

living things in an ecosystem

c)

weather conditions

d)

soil and water

10.

Which of the following is an abiotic factor?

a)

Grass

b)

Frog

c)

Soil

d)

Bacteria

11.

Flora refers to

a)

animals in an ecosystem

b)

plants in an ecosystem

c)

decomposers

d)

all living things

12.

Fauna are

a)

plants in an ecosystem

b)

non-living factors

c)

animals in an ecosystem

d)

producers only

13.

Biodiversity means

a)

the number of animals only

b)

the total population

c)

a variety of different living things

d)

only endangered species

14.

Aquatic ecosystems are ecosystems

a)

on land

b)

in forests

c)

in water

d)

in deserts

15.

Which of the following is an aquatic ecosystem?

a)

Forest

b)

Desert

c)

Coral reef

d)

Grassland

16.

Terrestrial ecosystems are ecosystems

a)

in water

b)

in the air

c)

on land

d)

underground

17.

Which is an example of a terrestrial ecosystem?

a)

Mangrove

b)

Coral reef

c)

Forest

d)

Ocean

18.

Organisms in an ecosystem depend on each other mainly to

a)

increase population size

b)

survive

c)

change habitats

d)

control weather

19.

Besides living organisms, plants and animals also depend on

a)

predators only

b)

decomposers

c)

abiotic factors such as sun, water, and air

d)

other ecosystems

20.

Interdependence in an ecosystem is shown through

a)

habitats only

b)

populations

c)

food chains and food webs

d)

biodiversity

21.

A food chain shows

a)

how organisms reproduce

b)

feeding relationships and energy transfer in a straight line

c)

where organisms live

d)

predator-prey relationships only

22.

Producers are also known as

a)

consumers

b)

decomposers

c)

autotrophs

d)

carnivores

23.

Producers make their own food by

a)

eating other organisms

b)

photosynthesis using sunlight

c)

absorbing soil nutrients only

d)

filtering water for food

24.

Consumers are organisms that

a)

make their own food

b)

break down dead matter

c)

consume other organisms for nutrients

d)

only eat plants

25.

Herbivores are also called

a)

secondary consumers

b)

tertiary consumers

c)

primary consumers

d)

decomposers

26.

Carnivores are best described as animals that

a)

eat plants only

b)

eat both plants and animals

c)

eat animals only

d)

make their own food

27.

Omnivores are animals that

a)

only eat plants

b)

only eat animals

c)

eat both plants and animals

d)

break down dead organisms

28.

Decomposers obtain nutrients by

a)

hunting animals

b)

eating plants

c)

breaking down dead organic matter

d)

photosynthesis

29.

Which organism is a decomposer?

a)

Frog

b)

Hawk

c)

Grass

d)

Bacteria

30.

A predator is an animal that

a)

is hunted by others

b)

kills and eats other animals

c)

eats plants only

d)

lives on another organism

31.

Prey is an animal that is

a)

a producer

b)

hunted, killed, and consumed

c)

a decomposer

d)

a parasite

32.

A parasite is an organism that

a)

kills its prey immediately

b)

lives in or on another organism and takes nutrients

c)

breaks down dead organisms

d)

makes its own food

33.

A food web is

a)

a single food chain

b)

a straight-line energy path

c)

an interconnection of smaller food chains

d)

only predator-prey relationships

34.

In the food web shown, the main energy source is

a)

grass

b)

the sun

c)

rabbit

d)

decomposers

35.

In the food web, the producer is

a)

grass

b)

grasshopper

c)

rabbit

d)

slug

36.

How many herbivore organisms are in the food web?

a)

Two

b)

Three

c)

Four

d)

Five

37.

How many carnivore organisms are shown in the food web?

a)

Six

b)

Seven

c)

Eight

d)

Four

38.

According to the food web facts, how many omnivores are there?

a)

One

b)

Two

c)

Three

d)

None

39.

Which option is a correct predator-prey relationship?

a)

Rabbit and grass

b)

Fox and vole

c)

Grasshopper and grass

d)

Sun and grass

40.

Another predator-prey relationship mentioned is

a)

Rabbit and Frog

b)

Slug and grass

c)

Rabbit and grasshopper

d)

Hawk and frog

41.

Use the diagram: Sun → Grass → Grasshopper → Frog → Fox. In this food chain, which organism is the producer?

a)

Grasshopper

b)

Grass

c)

Frog

d)

Fox

42.

Use the diagram: Sun → Grass → Grasshopper → Frog → Fox. Which organism is the primary consumer?

a)

Grass

b)

Grasshopper

c)

Frog

d)

Fox

43.

Use the diagram: Sun → Grass → Grasshopper → Frog → Fox. Which organism is a secondary consumer?

a)

Grasshopper

b)

Frog

c)

Grass

d)

Sun

44.

Use the diagram: Sun → Grass → Grasshopper → Frog → Fox. Which organism is the top carnivore in this food chain?

a)

Grasshopper

b)

Frog

c)

Fox

d)

Grass

45.

What would most likely happen if the grass was removed from this food chain?

a)

The sun would disappear

b)

The grasshopper population would decrease

c)

The fox would become a producer

d)

The frog would eat plants instead

46.

In a food chain diagram, arrows usually show

a)

where organisms live

b)

the movement of animals

c)

the transfer of energy between organisms

d)

predator size

47.

Energy in the food chain originally comes from

a)

the fox

b)

decomposers

c)

the sun

d)

grass

48.

Use a food web showing: grass, rabbit, grasshopper, vole, slug, frog, thrush, hawk, fox. Which organism is a producer in the food web?

a)

Rabbit

b)

Grass

c)

Slug

d)

Frog

49.

Use a food web showing: grass, rabbit, grasshopper, vole, slug, frog, thrush, hawk, fox. Which organism eats both plants and animals according to the food web?

a)

Grasshopper

b)

Rabbit

c)

None of the organisms

d)

Slug

50.

Use a food web showing: grass, rabbit, grasshopper, vole, slug, frog, thrush, hawk, fox. If the vole population decreased, which organism would be most directly affected?

a)

Grass

b)

Hawk

c)

Slug

d)

Grasshopper

51.

Which organism would be classified as a primary consumer in most food chains?

a)

Carnivore

b)

Decomposer

c)

Herbivore

d)

Producer

52.

Which role is missing from most food chain diagrams but is important in ecosystems?

a)

Predators

b)

Decomposers

c)

Producers

d)

Herbivores

53.

Why is a food web more realistic than a food chain?

a)

It shows only one feeding relationship

b)

It includes abiotic factors

c)

It shows multiple interconnected feeding relationships

d)

It only includes carnivores

54.

If all decomposers were removed from an ecosystem, what would likely happen?

a)

Energy from the sun would stop

b)

Dead matter would build up

c)

Producers would stop photosynthesis

d)

Predators would become herbivores

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