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(TP2) c2scf2 Ecosystem

Total questions: 47

Worksheet time: 24mins

Name
Class
Date
1.

In the food chain above, identify the producer

a)

grass

b)

grasshopper

c)

frog

d)

snake

2.

In the food chain above, identify the primary consumer

a)

grass

b)

grasshopper

c)

frog

d)

snake

3.

In the food chain above, identify the secondary consumer

a)

grass

b)

grasshopper

c)

frog

d)

snake

4.

Name the process that contribute to the release of carbon dioxide in the air labeled A

a)

Decomposition

b)

Respiration

c)

Photosynthesis

d)

Transpiration

5.

Name the process that contribute to the release of carbon dioxide in the air labeled B

a)

Decomposition

b)

Respiration

c)

Photosynthesis

d)

Transpiration

6.

Name the process that contribute to the release of carbon dioxide in the air labeled C

a)

Decomposition

b)

Respiration

c)

Photosynthesis

d)

Transpiration

7.

Uses oxygen and releases carbon dioxide through respiration

a)

Grass

b)

Horse

c)

Human

d)

Bacteria

8.

Uses carbon dioxide and releases oxygen through photosynthesis

a)

Grass

b)

Horse

c)

Human

d)

Bacteria

9.

Uses oxygen and releases carbon dioxide through decomposition of dead organisms

a)

Grass

b)

Horse

c)

Human

d)

Bacteria

10.

Name of the ecosystem

a)

Marine ecosystem

b)

Mangrove ecosystem

c)

Desert ecosystem

d)

Forest ecosystem

11.

Choose all the right populations in the ecosystem

a)

Population of elephants

b)

Population of squirrels

c)

Population of deers

d)

Population of rabbits

e)

Population of monkey

12.

Relationship between grass and deer

a)

Deer feeds on grass

b)

Grass feeds on deer

c)

Grass supply oxygen to the deers

d)

Deers supply carbon dioxide to the grass

13.

Relationship between lion and rabbits

a)

Prey-predator relationship

b)

Symbiosis relationship

c)

Competition relationship

d)

Parasitism relationship

14.

A group of hunters kills most of the lions in the above ecosystem. What will happen to the population of deer?

a)

No changes in the population of deer

b)

Population of deer decreases

c)

Population of deer increases

15.

Competitive factors among grasses in an ecosystem

a)

Sunlight

b)

Living space

c)

Water

d)

Food and nutrients

e)

Mates

16.

Competitive factors among tigers in an ecosystem

a)

Sunlight

b)

Living space

c)

Water

d)

Food and nutrients

e)

Mates

17.

Competitive factors among tigers and lions in an ecosystem

a)

Sunlight

b)

Living space

c)

Water

d)

Food and nutrients

e)

Mates

18.

Picture shows the energy flow in an ecosystem.

The main source of energy in the ecosystem is...

a)

The Sun

b)

The grass

c)

Deer

d)

Lion

19.

Plants absorb water from soil and release __________ through transpiration process

a)

sweat

b)

steam

c)

smoke

d)

water vapour

20.

Two processes by plants that contribute to the amount of water in the air

a)

Transpiration

b)

Respiration

c)

Evaporation

d)

Condensation

21.

Three processes by human and animals that contribute to the amount of water in the atmosphere

a)

Defecation

b)

Transpiration

c)

Excretion

d)

Respiration

e)

Evaporation

22.

RESPIRATION

a)

A

b)

B

c)

C

d)

D

e)

E

23.

TRANSPIRATION

a)

A

b)

B

c)

C

d)

D

e)

E

24.

EVAPORATION

a)

A

b)

B

c)

C

d)

D

e)

E

25.

What is X

a)

Condensation

b)

Evaporation

c)

Transpiration

d)

Precipitation

26.

Animals that eat only green plants (producers) as food

a)

Herbivore

b)

Carnivore

c)

Omnivore

d)

Secondary herbivore

27.

Animals that eat plants and animals

a)

Herbivore

b)

Carnivore

c)

Omnivore

d)

Secondary herbivore

28.

Animals that eat herbivores

a)

Herbivore

b)

Primary Carnivore

c)

Omnivore

d)

Secondary herbivore

29.

Animals that eat primary carnivores

a)

Herbivore

b)

Primary Carnivore

c)

Omnivore

d)

Secondary carnivores

30.

Interaction between organisms in the picture

a)

Parasitism

b)

Prey-Predator

c)

Competition

d)

Commensalism

e)

Mutualism

31.

Interaction between organisms in the picture

a)

Parasitism

b)

Prey-Predator

c)

Competition

d)

Commensalism

e)

Mutualism

32.

Interaction between organisms in the picture

a)

Parasitism

b)

Prey-Predator

c)

Competition

d)

Commensalism

e)

Mutualism

33.

Interaction between organisms in the picture

a)

Parasitism

b)

Prey-Predator

c)

Competition

d)

Commensalism

e)

Mutualism

34.

Interaction between organisms in the picture

a)

Parasitism

b)

Prey-Predator

c)

Competition

d)

Commensalism

e)

Mutualism

35.

Interaction between organisms in the picture

a)

Parasitism

b)

Prey-Predator

c)

Competition

d)

Commensalism

e)

Mutualism

36.

Interaction between organisms in the picture

a)

Parasitism

b)

Prey-Predator

c)

Competition

d)

Commensalism

e)

Mutualism

37.

Interaction between organisms in the picture

a)

Parasitism

b)

Prey-Predator

c)

Competition

d)

Commensalism

e)

Mutualism

38.

Interaction between organisms in the picture

a)

Parasitism

b)

Prey-Predator

c)

Competition

d)

Commensalism

e)

Mutualism

39.

Interaction between organisms in the picture

a)

Parasitism

b)

Prey-Predator

c)

Competition

d)

Commensalism

e)

Mutualism

40.

____ is used to control the population of pest without using pesticides

a)

Fertilizer

b)

Predator

c)

Biological control

d)

Pesticides spray

41.

Factors that affect the size of population in an ecosystem

a)

Presence of predator

b)

Source of food

c)

Change in weather

d)

Disease attack

42.

Parasites may cause disease and ____ the growth of organisms

a)

slow down

b)

speed up

c)

stagnant

d)

stops

43.

As the population of predators increase, the size of population of prey will ___

a)

increase

b)

decrease

c)

grow

d)

extinct

44.

Lack of sources of food will ___ the size of a population

a)

increase

b)

decrease

c)

interrupt

d)

slow down

45.

Drought causes the population of organisms to ___

a)

decrease

b)

increase

c)

slow down

d)

extinct

46.

____ during drought disrupt the balance between the living population

a)

Rain

b)

Sun light

c)

Water shortage

d)

Heat

47.

The ____ of animals to other places reduces the population size in an ecosystem

a)

migration

b)

habitat

c)

reduce

d)

balance

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