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Ecological Terms PreLess

Total questions: 21

Worksheet time: 10mins

Name
Class
Date
1.

The statements below describe ecosystem correctly, except

a)

Ecosystem involves interactions between organisms

b)

Ecosystem includes only living components

c)
Ecosystem is a self-sustaining system.
d)

Ecosystem consists of organisms interacting with physical environment

2.

What is biotic factor?

a)
Biotic factors are non-living entities.
b)
Biotic factors are only found in water ecosystems.
c)
Biotic factors are inorganic substances.
d)
Biotic factors are living organisms.
3.

What is abiotic factor?

a)
Abiotic factors are living components of an ecosystem.
b)
Abiotic factors only include plants and animals.
c)
Abiotic factors are non-living components of an ecosystem.
d)
Abiotic factors are not important in an ecosystem.
4.

Which of the below is a biotic factor?

a)
Water
b)
Air
c)
Sunlight
d)
Plants
e)
Rocks
5.

Which of the following is an abiotic factor?

a)

bacteria

b)
temperature
c)

rats

d)
plants
e)

mushroom

6.

What are the components of ecosystem?

i) Physical environment

ii) Predators

iii) Producers

iv) Decomposers

v) Consumers

a)

i, ii and iii

b)

i, ii, iv and v

c)

ii, iii, iv and v

d)

i, iii, iv and v

e)

All of the above

7.

What is a producer in an ecosystem?

a)
An organism that feeds on other organisms in the ecosystem.
b)
An organism that decomposes dead organic matter in the ecosystem.
c)

An organism that can make its own food through photosynthesis.

d)
An organism that regulates the population of other organisms in the ecosystem.
8.

What is a consumer in an ecosystem?

a)
An organism that produces energy in an ecosystem.
b)
An organism that does not interact with other organisms in an ecosystem.
c)
An organism that only consumes water in an ecosystem.
d)
An organism that feeds on other organisms to obtain energy and nutrients.
9.

What is a decomposer in an ecosystem?

a)
An organism that breaks down dead organic matter into simpler substances.
b)
An organism that produces energy through photosynthesis.
c)
An organism that helps in the pollination process.
d)
An organism that preys on other organisms for food.
10.

What is habitat?

a)

Natural environment in which an organism lives.

b)

Type of food that organisms consume.

c)

Individuals of the same species living together in an area

d)

Populations of all species found in an ecosystem at a particular time

11.

What is a population in an ecosystem?

a)

Individuals of the same species that live in the same area and interact with one another.

b)

Non-living components of the ecosystem

c)

Area occupied by all organisms

d)

Individuals of the different species that live in the same area and interact with one another.

e)

Individuals of the same species that live in the different area but interact with one another.

12.

What is a community in an ecosystem?

a)

Populations of same species that live and interact in the same area.

b)

Populations of different species that live in a different area but interact with one another.

c)

Populations of different species that live and interact in the same area.

d)
The total number of organisms in an ecosystem
13.

True or false: The picture shows a population of bear

a)
True
b)
False
14.

True or false: Siberian tiger and Malayan tiger is grouped as a community

a)
False
b)
True
15.
An organism that needs to eat other organisms to obtain energy is known as a:
a)

Consumer

b)
Producer
c)
Consumer
d)
Mutualist
16.
An organism that helps to recycle nutrients within an ecosystem by eating dead or decaying organisms is a:
a)

Predator

b)

Consumer

c)

Producer

d)

Decomposer

17.

What are plants called in an ecosystem?

a)

Producers

b)

Consumers

c)

Decomposers

d)

Scavengers

18.
An area where an organism finds food, shelter and water in a specific arrangement
a)
niche
b)
biosphere
c)
biome
d)
habitat
19.

Interaction among the same species of gazelles live in the same area. What term includes all these interacting organisms?

a)
habitat
b)
population
c)
ecosystem
d)
community
20.

Interaction consists of cacti, snakes, scorpions, insects, sunlight and sand. What term includes all these components?

a)

Ecosystem

b)

Community

c)

Population

d)

Producer

21.

In a pond, there are frogs, fish, insects, and algae. What term including all these interacting populations?

a)
ecosystem
b)
habitat
c)

population

d)
community

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